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Nautel NX15 Troubleshooting Manual - 207-1036-10

Summary of NX15

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    Nx25/nx15 transmitter troubleshooting manual document:nhb-nx15-nx25-trb issue: 5.0 2016-05-06 status: standard.

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    Nautel limited 10089 peggy’s cove road hackett’s cove, ns canada b3z 3j4 phone: +1.902.823.3900 or toll free: +1.877.6nautel (6628835) (canada & usa only) fax: +1.902.823.3183 nautel inc. 201 target industrial circle bangor, maine usa 04401 phone: +1.207.947.8200 fax: +1.207.947.3693 customer servic...

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    Nx25/nx15 troubleshooting manual table of contents page v contents release control record vii responding to alarms 1-1 corrective maintenance 1-1 electrostatic protection 1-3 identifying an alarm 1-4 responding to alarms 1-41 removing and reinstalling rf power modules 1-45 troubleshooting rf power m...

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    Nx25/nx15 troubleshooting manual table of contents page vi issue 5.0 2016-05-06 parts lists 3-1 parts information 3-1 family tree 3-1 how to locate information about a specific part 3-1 column content 3-2 oem code to manufacturer’s cross-reference 3-3 common abbreviations/acronyms 3-4 wiring/connect...

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    Nx25/nx15 troubleshooting manual issue 5.0 2016-05-06 page vii release control record issue date reason 5.0 2016-05-06 introduction of nx15. Supports hardware nara59c. Supports nx sw release nx4.7 or higher..

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    Nx25/nx15 troubleshooting manual page viii issue 5.0 2016-05-06.

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-1 section 1: responding to alarms this section provides instructions you need when performing troubleshooting on the nx25/nx15 transmitter. This section includes the following topics: • corrective maintenance • electro...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-2 issue 5.0 2016-05-06 remote troubleshooting remote on-air troubleshooting consists of monitoring the transmitter's radiated signal using an on-air monitor, and observing the status of each remote fault alarm indicator. Information obtain...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-3 electrostatic protection the transmitter's assemblies contain semiconductor devices that are susceptible to damage from electrostatic discharge. The following precautions must be observed when handling an assembly wh...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-4 issue 5.0 2016-05-06 identifying an alarm the best way to identify an alarm is by viewing the front panel’s transmitter status page ( figure 1.1 ). If an alarm exists, the status button at the bottom of the aui display will be red. Press...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-5 4. Refer also to table 1.2 on page 1-35 for summary alarms that can occur - when properly configured - as remotely monitored outputs . 5. If the troubleshooting and subsequent replacement of a suspect pwb or rf power...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-6 issue 5.0 2016-05-06 table 1.1: troubleshooting alarms alarm (with prefix) description and troubleshooting action controller: audio loss shutdown this alarm occurs if the modulation level is below the preset threshold for the designated ...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-7 controller: combiner interlock open this alarm will only occur if the transmitter is connected in a combined system. The alarm indicates that the interlock signal from the combiner is open. When this alarm occurs, th...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-8 issue 5.0 2016-05-06 controller: eeprom failure: config this alarm occurs when the transmitter is unable to read the following settings from eeprom upon boot-up. The transmitter will revert to its initial default settings, which may be d...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-9 controller: eeprom failure: potentiometers this alarm occurs when the transmitter is unable to read its rf symmetry adjustment calibration from eeprom upon boot-up. The alarm will remain asserted until the rf symmetr...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-10 issue 5.0 2016-05-06 controller: exciter a (or b) not responding this alarm occurs when the controller is configured to expect exciter a (or b) is installed, and it has failed to receive any serial response from that exciter. The alarm ...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-11 controller: external pdm inhibit this alarm occurs if the external pdm inhibit circuit, wired to the control/interface pwb, is closed. When this alarm occurs, the transmitter immediately inhibits the pdm and the tra...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-12 issue 5.0 2016-05-06 controller: gps not responding this alarm indicates the transmitter is configured to use a gps sync pwb as a frequency and phase reference, but the controller is not receiving communication from the gps sync pwb. Th...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-13 controller: high rf drive this alarm indicates the controller's rf drive duty cycle meter has risen above 60% for longer than 10 seconds. This alarm will cause an exciter changeover, if automatic changeover is enabl...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-14 issue 5.0 2016-05-06 controller: internal watchdog reset this alarm will only be seen in transmitter logs, and indicates that the controller was reset by its internal watchdog. If this alarm persists, replace the control/interface pwb (...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-15 controller: low rf drive this alarm indicates the controller's rf drive duty cycle meter has fallen below 40% for longer than 10 seconds. This alarm will cause an exciter changeover, if automatic changeover is enabl...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-16 issue 5.0 2016-05-06 controller: rack 1 not responding this alarm indicates that the controller is no longer receiving serial communication from rack 1. No action is taken. Check the wiring and connections between the control/interface ...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-17 exciter a/b: audio loss this alarm occurs as a result of the modulation being below the specified threshold for the designated period of time set in the remote aui’s audio loss tab for the current preset. This will ...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-18 issue 5.0 2016-05-06 exciter a/b: cutback the forward power has been reduced due to multiple shutbacks. See “cutback:” on page 1-8  of the operations & maintenance manual for a description of the cutback routine. check for as...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-19 exciter a/b: high b+ voltage this alarm indicates that the b+ voltage measured by the exciter exceeded the b+ setpoint by more than 20 v for at least ten (10) seconds. If the rack interface’s high b+ voltage alarm i...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-20 issue 5.0 2016-05-06 exciter a/b: high temperature foldback this alarm indicates either the average temperature of the 10 hottest power modules in the transmitter has exceeded 80 degrees celsius, or the rectifier heatsink temperature ha...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-21 exciter a/b: no carrier sync signal present this alarm will occur when the transmitter’s sync source is set to gps sync card or combiner and the 10 mhz or 1 khz synchronization signal is either not present or out of...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-22 issue 5.0 2016-05-06 exciter a/b: over current shutback this alarm indicates the peak rf current at the output of the transmitter has exceeded the peak rf current limit. This alarm causes the transmitter to immediately shut down its rf ...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-23 exciter a/b: reboot for settings needed this alarm indicates that the exciter needs to reboot itself to reconfigure its settings. The exciter should automatically reboot itself, however if the alarm persists, press ...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-24 issue 5.0 2016-05-06 exciter a/b: transmitter type not set this alarm indicates that the associated exciter has not been informed of the type of transmitter it has been installed in. If the affected exciter is a replacement, follow the ...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-25 exgine: lost external 10mhz this alarm is occurs when the exgine's external 10 mhz signal disappears during an active e2x connection. When this alarm is present, the exgine will run on the internal oscillator. This ...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-26 issue 5.0 2016-05-06 module #: external disable active this alarm indicates the pdm cable has been disconnected from the front of the rf power module, which causes the power module to be immediately disabled. If this alarm occurs, recon...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-27 module #: high rf drive this alarm indicates the rf drive duty cycle as measured by the rf power module is above 65%. The affected rf power module is immediately disabled. Try swapping the affected rf power module w...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-28 issue 5.0 2016-05-06 module #: low fan 1 (or 2) speed this alarm occurs if the rf power module is expected to produce rf power and the fan (1 or 2) tachometer drops below 1650 rpm. The affected rf power module is immediately disabled. I...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-29 module #: overmodulation this alarm indicates the rf power module's pdm duty cycle meter is above 95%. Verify the modulation being applied to the transmitter is not too high. Try swapping the rf power module with an...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-30 issue 5.0 2016-05-06 rack #: arc detector 1 this alarm indicates that the transmitter’s arc detector has detected an arc and caused the transmitter to shut back. Due to the sensitivity of the arc detector, it is possible for an external...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-31 rack #: high b+ voltage if the b+ voltage is more than 10 v above the b+ voltage set point, the rack interface will attempt to decrease the rectifier’s output. If the rack interface reaches the bottom of its adjustm...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-32 issue 5.0 2016-05-06 rack #: low b+ voltage if the b+ voltage falls to more than 15% below the b+ voltage set point, the rack interface will attempt to turn up the rectifier output voltage. If the rack interface reaches the top of its a...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-33 rack #: +15 v a (or b) fail the digital fault reporting output of either +15 v power supply (u3 or u4) is active. If the overall +15 v fail alarm is active, follow the troubleshooting steps for that alarm. Otherwise...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-34 issue 5.0 2016-05-06 rack #: +48 v a (or b) fail if the overall +48 v fail alarm is active, follow the troubleshooting steps for that alarm. Otherwise, check continuity of the cabling between the associated +48 v power supply and the ra...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-35 table 1.2: troubleshooting summary alarms summary alarm name, aui (front panel ui) description and triggering alarms audio loss summary (audio loss summary) this summary alarm is triggered if any of the following au...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-36 issue 5.0 2016-05-06 external fault summary (external summary) this summary alarm is triggered if any of the following external alarms occur: controller alarms: combiner interlock open external pdm inhibit interlock open exciter alarms:...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-37 maintenance fault summary (maintenance summary) this summary alarm is triggered if any of the following maintenance related alarms occur: controller alarms: eeprom failure: config exciter changeover high rf drive ee...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-38 issue 5.0 2016-05-06 off air summary (off air summary) this summary alarm is triggered if any of the following off-air related alarms occur: controller alarms: arc shutback external pdm inhibit interlock open audio loss shutdown fast sw...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-39 power supply fault summary (ps summary) this summary alarm is triggered if any of the following power supply related alarms occur: exciter alarms: high b+ voltage high dc curr foldback low b+ voltage rack alarms: ac...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-40 issue 5.0 2016-05-06 table 1.3: module replacement procedures module replacement procedure rf power module see page 1-45 power amplifier mosfet see page 1-51 modulator mosfet see page 1-53 remote interface pwb see page 1-55 digital am e...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-41 responding to alarms controller: external pdm inhibit the external pdm inhibit is wired to the control/interface pwb. A controller: external pdm inhibit alarm indicates that an external pdm inhibit command is presen...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-42 issue 5.0 2016-05-06 5. If 15 v is present on j6-5 and j6-1, the external interlock circuit is open (normally caused by an open interlock switch). Module faults there are many alarms on the aui, prefixed by the text module , that indica...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-43 rf power module troubleshooting refer to “removing and reinstalling rf power modules” on page 1-45 for removal and installation instructions and then refer to “troubleshooting rf power modules” on page 1-48 for deta...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-44 issue 5.0 2016-05-06 rack #: low ac a rack # (1-8): low ac alarm is triggered when the ac input voltage is at least 45% below its expected level. Recovery from this alarm is automatic when the ac voltage rises to an acceptable level. If...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-45 removing and reinstalling rf power modules removing an rf power module 1. Confirm the location of the rf power module that is being removed. Note the alarm text includes a module serial address that is also identifi...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-46 issue 5.0 2016-05-06 figure 1.2: disabling/enabling an rf power module green indicates enabled. Click to disable (will turn red); click again to re-enable (will turn green).

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-47 installing an rf power module 1. If possible, turn off the transmitter before installing an rf power module. Grasp the handle on the front of the rf power module and insert it into the transmitter. 2. Carefully push...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-48 issue 5.0 2016-05-06 troubleshooting rf power modules maintenance philosophy recommended troubleshooting procedures for rf power modules are limited to “go” or “no-go” resistance or diode measurements on the module’s power semi-conducto...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-49 resistance measurements complete the following resistance measurements for each suspect rf power module. See figure 1.4 on page 1-50 to identify the power mosfets on the rf power module. 1. Remove fuse f1 from its h...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-50 issue 5.0 2016-05-06 figure 1.4: rf power module mosfet and diode location some parts removed for clarity g d s g d s g d s q13 q12 q11 q7 q8 q9 q10 partial view of napa34 modulator/power amplifier pwb modulator mosfets power amplifier ...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-51 power amplifier fet replacement see figure 1.5 on page 1-52 . 1. Remove five m3 screws that secure the modulator/power amplifier pwb to the chassis. 2. Remove 16 m4 screws (four for each mosfet) that secure the pwb ...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-52 issue 5.0 2016-05-06 figure 1.5: power amplifier fet replacement.

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-53 modulator fet replacement 1. Remove five m3 screws that secure the modulator/power amplifier pwb to the chassis. 2. Remove 16 m4 screws (four for each mosfet) that secure the pwb to the mosfets. 3. Desolder the gate...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-54 issue 5.0 2016-05-06 control/exciter panel board removal/replacement the control/exciter panel (a11, see figure 1.6 ) contains the control/interface pwb (a11a1), two digital am exciter pwbs [a (a11a2) and b (a11a3)], remote interface pw...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-55 remote interface pwb replacement 1. Remove and retain six sets of mounting hardware from the remote interface pwb (a11a4). 2. Pull the remote interface pwb away from the control/interface pwb (a11a1). It may be help...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-56 issue 5.0 2016-05-06 figure 1.8: ncode uploader menu.

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-57 figure 1.9: upload dsp firmware menu 5. Click the upload dsp firmware button (see figure 1.8 on page 1-56 ). The menu shown in figure 1.9 should appear, along with the connected to dsp successfully! Prompt. Click ok...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-58 issue 5.0 2016-05-06 figure 1.10: upload dsp firmware menu - select an option 8. Remove and retain four sets of mounting hardware from the digital am exciter pwb being replaced (a11a2 or a11a3). 9. Pull the digital am exciter pwb away f...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-59 figure 1.11: upload dsp firmware menu - browse for configuration file 14. Click the program exciter configuration checkbox (see figure 1.11 on page 1-59 ) so that the box contains a checkmark and then click the prog...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-60 issue 5.0 2016-05-06 control/interface pwb replacement 1. Record the following information (as a minimum) from the front panel aui: – presets page: record settings for all desired presets – scheduler page: record rules and daily events ...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-61 11. Re-enter all the aui information recorded in step 1 . 12. Set the time using the front panel aui’s factory settings - time setup page. 13. Measure the vswr threshold voltage on the control/interface pwb at r73-l...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-62 issue 5.0 2016-05-06 pdm drive distribution pwb replacement see figure 1.12 . Figure 1.12: location of pdm drive distribution pwb 1. Open the front door. 2. Disconnect all cables attached to the pdm drive distribution pwb, taking note o...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-63 rf drive distribution pwb replacement see figure 1.13 . Figure 1.13: location of rf drive distribution and rack interface pwbs 1. Turn off the ac power at the source. Open the back door and verify the green leds on ...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-64 issue 5.0 2016-05-06 rack interface pwb replacement see figure 1.13 on page 1-63 . 1. Turn off the ac power at the source. Open the back door and verify the green leds on the power module interface pwbs are off, indicating the capacitor...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-65 6. Obtain a replacement rack interface pwb (nautel part # napi152a) and set dip switch s1 as follows. 7. Reverse step 1 through step 5 to reinstall the pwb. 8. If you are replacing the controller’s rack interface pw...

  • Page 74

    Nx25/nx15 troubleshooting manual responding to alarms page 1-66 issue 5.0 2016-05-06 scr rectifier inspection/replacement see figure 1.14 . Figure 1.14: location of scr rectifier assembly u1 and its cooling fans 1. Turn off the ac power at the source. Open the back door and verify the green leds on ...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-67 2. If you are responding to a rectifier fan 1 (or 2) fail alarm (if not, proceed to step 3 ), inspect the scr rectifier assembly’s cooling fans (see figure 1.14 on page 1-66 ) for debris that might restrict proper m...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-68 issue 5.0 2016-05-06 low voltage power supply replacement see figure 1.15 on page 1-68 . 1. Turn off the ac power at the source. Open the back door and verify the green leds on the power module interface pwbs are off, indicating the cap...

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    Nx25/nx15 troubleshooting manual responding to alarms issue 5.0 2016-05-06 page 1-69 4. Remove the power supply module from the transmitter, noting its reference designation (u3 through u7) should be marked on the side panel near the module. 5. Reverse step 1 through step 4 to reinstall the new powe...

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    Nx25/nx15 troubleshooting manual responding to alarms page 1-70 issue 5.0 2016-05-06.

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    Nx25/nx15 troubleshooting manual detailed circuit descriptions issue 5.0 2016-05-06 page 2-1 section 2: detailed circuit descriptions refer to the functional block diagram: “nx series transmitter block diagram” on page 1-11  and high level descriptions of the nx25/nx15 operation and mainten...

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    Nx25/nx15 troubleshooting manual detailed circuit descriptions page 2-2 issue 5.0 2016-05-06 the rf drive signals are applied to high speed comparators u13:a and u42:a, which are used to generate a square wave. These comparators also receive threshold data from digital potentiometer u38, which acts ...

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    Nx25/nx15 troubleshooting manual detailed circuit descriptions issue 5.0 2016-05-06 page 2-3 synchronization input selection various synchronization inputs (1 pps, 1 khz and 10 mhz) can be applied to the control/interface pwb. Selection circuits determine which sources (a or b, then internal or exte...

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    Nx25/nx15 troubleshooting manual detailed circuit descriptions page 2-4 issue 5.0 2016-05-06 rf monitor circuit forward and reflected power samples of the transmitter’s rf output are applied from the rf output filter to the fwd pwr sample (j4-1) and refld pwr sample (j4-7) inputs. One of these input...

  • Page 83

    Nx25/nx15 troubleshooting manual detailed circuit descriptions issue 5.0 2016-05-06 page 2-5 digital am exciter pwb (nape78a/01) see figure 2.1 on page 2-5 . Detailed electrical schematics have not been included in this manual. Figure 2.1: block diagram - digital exciter block diagram dsp the dsp (u...

  • Page 84

    Nx25/nx15 troubleshooting manual detailed circuit descriptions page 2-6 issue 5.0 2016-05-06 figure 2.2: block diagram - fpga digital pdm generator see figure 2.3 . The fpga generates nine modulation phases, each separately synthesized at 317 msps, resulting in very low quantization noise. The nine-...

  • Page 85

    Nx25/nx15 troubleshooting manual detailed circuit descriptions issue 5.0 2016-05-06 page 2-7 audio and iboc digitization differential analog audio is applied to j2-10 (+) and j2-22 (-). Differential line receiver u29 converts the incoming audio to a single-ended signal and adc u35 digitizes the sign...

  • Page 86

    Nx25/nx15 troubleshooting manual detailed circuit descriptions page 2-8 issue 5.0 2016-05-06 rs-485 interface communications between the exciter and the front panel aui are performed via an rs485 serial bus. The front panel aui sends configuration settings for the exciter, such as operating frequenc...

  • Page 87

    Nx25/nx15 troubleshooting manual detailed circuit descriptions issue 5.0 2016-05-06 page 2-9 rf power module ( nap39a ) see electrical schematics figures sd-24 and sd-25. The rf power module is effectively four wideband rf amplifiers for the am broadcast frequency band (530 - 1710 khz). It operates ...

  • Page 88

    Nx25/nx15 troubleshooting manual detailed circuit descriptions page 2-10 issue 5.0 2016-05-06 fet driver fet drivers u12:a, u14:a and u15:a are capable of switching at very high speeds and sinking/ sourcing high amounts of current. These devices switch the energy required to turn the modulator power...

  • Page 89

    Nx25/nx15 troubleshooting manual detailed circuit descriptions issue 5.0 2016-05-06 page 2-11 the modulator filter’s output voltage is across capacitors c116 and c117, but is not ground referenced. The output (pa voltage) applied to the rf power amplifier will be positive and is the sum of a dc comp...

  • Page 90

    Nx25/nx15 troubleshooting manual detailed circuit descriptions page 2-12 issue 5.0 2016-05-06 gate drive circuit each rf power mosfet is driven individually by gate driver ic's u23:a, u24:a, u26:a, and u29:a. The #rf_drive_enable+ is controlled by microcontroller u22 through q5. This allows the micr...

  • Page 91

    Nx25/nx15 troubleshooting manual detailed circuit descriptions issue 5.0 2016-05-06 page 2-13 fast rf drive loss detection is accomplished using xor gate u25:a and comparator u18:a. The xor gate monitors both rf drive signals and, during normal operation, delivers a short low pulse during the dead t...

  • Page 92

    Nx25/nx15 troubleshooting manual detailed circuit descriptions page 2-14 issue 5.0 2016-05-06 control, monitoring and protection microprocessor u22 performs all control, monitoring, and protection services required. It monitors analog samples and alarm conditions and will report back to a rack maste...

  • Page 93

    Nx25/nx15 troubleshooting manual detailed circuit descriptions issue 5.0 2016-05-06 page 2-15 during normal operation the rf shorting relay is in an open state. U22 sends out a 5 v pulse for 50 ms to the gate of q4. This allows q4 to conduct current through the ‘release’ coil causing the rf shorting...

  • Page 94

    Nx25/nx15 troubleshooting manual detailed circuit descriptions page 2-16 issue 5.0 2016-05-06 fast overcurrent conditions are detected through the use of an internal comparator of u22. The unfiltered dc current sample flows through diode cr10 and receives high frequency filtering with r91 and c91. T...

  • Page 95

    Nx25/nx15 troubleshooting manual detailed circuit descriptions issue 5.0 2016-05-06 page 2-17 fan tach a and b: each power module monitors the tachometer signals from both fans that are operating within its respective column. The fan tachometer output is an open collector output that will switch on ...

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    Nx25/nx15 troubleshooting manual detailed circuit descriptions page 2-18 issue 5.0 2016-05-06.

  • Page 97

    Nx25/nx15 troubleshooting manual parts lists issue 5.0 2016-05-06 page 3-1 section 3: parts lists parts information this section contains reference designation lists that provide descriptive and provisioning information for all electrical and mechanical parts that have an assigned reference designat...

  • Page 98

    Nx25/nx15 troubleshooting manual parts lists page 3-2 issue 5.0 2016-05-06 reference designation lists individual reference designation lists are provided for: • assemblies that are assigned an alpha-prefixed nautel nomenclature (e.G., nap39a) • cable harnesses that are assigned a numbered nautel pa...

  • Page 99

    Nx25/nx15 troubleshooting manual parts lists issue 5.0 2016-05-06 page 3-3 vendor # column this column contains an original equipment manufacturer's part number for a part. A single part number is listed for each part, even though there may be more than one known manufacturer. The listed number is n...

  • Page 100

    Nx25/nx15 troubleshooting manual parts lists page 3-4 issue 5.0 2016-05-06 common abbreviations/acronyms the following abbreviations/acronyms may appear in the description of part column: • smt denotes item is designed to be installed using surface mount technology. • mta denotes item is a mass term...

  • Page 101

    Nx25/nx15 troubleshooting manual parts lists issue 5.0 2016-05-06 page 3-5 oem code manufacturer oem code manufacturer 22421 thomas and betts limited 79942 intel corp sales office 23598 ross engineering corp. 7d893 fairchild semiconductor corporation 23875 m-tron industries incorporated 80294 bourns...

  • Page 102

    Nx25/nx15 troubleshooting manual parts lists page 3-6 issue 5.0 2016-05-06 oem code manufacturer oem code manufacturer panas panasonic sl575 meanwell sales information phoenix see 5y407 tdk see 54583 saronix saronix texas see er737 saw84 iei technology corp. U3040 st microelectronics sb ele sb elect...

  • Page 103

    Nx25/nx15 troubleshooting manual parts lists issue 5.0 2016-05-06 page 3-7 figure 3.1: nx25 family tree f2070368 v1 25/50 kw rectifier assembly 207-7055-05 a48 capacitor assembly a46 207-7129-01 a40a1 single board computer 207-8710 rf power module (b - j) same as a15 a16 - a24 a12 - a14 not used a1a...

  • Page 104

    Nx25/nx15 troubleshooting manual parts lists page 3-8 issue 5.0 2016-05-06.

  • Page 105: 207-1036-10

    207-1036-10 relay assy refdes nautel # description vendor # oem code a01 207-6045-02 gas discharge pwb assy 207-6045-02 37338 k01 ka60 relay, latching, 100a, dbl coil, reverse polarity k100b-10-048ar- 048(rohs) p01 ju02 mta, standard dust cover, 4 pin 640551-4 09482 p01 ju27 mta, keyed closed end ho...

  • Page 106: 207-6213-04

    207-6213-04 current probe-nx25, 50,100,200 refdes nautel # description vendor # oem code j01 jt05 conn, coax, bnc, recept, 50ohm, insul 31-10 02660 j02 - not used not used 37338 p01 jdp24 conn, coax, bnc, plug, 50ohm,crimp 225395-7 09482 r01 rbp36 resistor, film, 39 ohms, 5% 2w gs-3, 39 ohms 75042 r...

  • Page 107: 207-7144-02

    207-7144-02 ac power indicator assy,nx15/nx25/50 refdes nautel # description vendor # oem code ds01 bap44 led, pilot light, amber, 230vac ledteca220ac ds02 bap44 led, pilot light, amber, 230vac ledteca220ac ds03 bap44 led, pilot light, amber, 230vac ledteca220ac ds04 bap44 led, pilot light, amber, 2...

  • Page 108: 207-8564-02

    207-8564-02 cableform, main, nx15/nx25 refdes nautel # description vendor # oem code e01 har29 lug, crimp, joint, butt,16-14 awg, blue 320562 09482 e02 har29 lug, crimp, joint, butt,16-14 awg, blue 320562 09482 e03 ham69 conn,quick-dis,f,1/4 tab 14-16shrink b-106-3632 06090 e04 ham69 conn,quick-dis,...

  • Page 109: 207-8564-02

    Continued from previous page 207-8564-02 cableform, main, nx15/nx25 refdes nautel # description vendor # oem code p23 jdp24 conn, coax, bnc, plug, 50ohm,crimp 225395-7 09482 p24 jdp24 conn, coax, bnc, plug, 50ohm,crimp 225395-7 09482 p25 ju56 conn, hrs, df11, 2mm, dualsocket 6, crimp df11-6ds-2c 0ag...

  • Page 110: 207-8578-01

    207-8578-01 cableform, rf nx15/nx25 refdes nautel # description vendor # oem code w21 ua203 cable, ethernet, 56", shld, black, 28awg, 80degc, with guard pcf-s56i- ua203g(rohs) w22 - not used not used 37338 w23 ua214 cable, ethernet, 67", shld, black, 28awg, 80degc, with guard pcf-s67i- ua214g(rohs) ...

  • Page 111: 207-8579-02

    207-8579-02 cableform, pdm nx25 (rls 3) refdes nautel # description vendor # oem code w01 - not used not used 37338 w02 ua212 cable, ethernet, 33", shld, black, 28awg, 80degc, with guard pcf-s33i- ua212g(rohs) w03 - not used not used 37338 w04 ua198 cable, ethernet, 21", shld, black, 28awg, 80degc, ...

  • Page 112: 207-8710

    207-8710 sbc assy, nx series, rls 3 refdes nautel # description vendor # oem code b01 zap55 fan, intel atom cpu, 12v, 90ma 31100-000327- rs(rohs) saw84 u01 ub97 motherboard, epic, atom d525,12v nano-pv-d5251- r10(static)(rohs)ie i saw84 u02 - not used not used 37338 u03 ux145 memory, 2g, ddr3. 1333m...

  • Page 113: Nafp106B/02

    Nafp106b/02 directional coupler (fwd/reflpwr) for nx15/nx25 refdes nautel # description vendor # oem code a01 napp10/02 directional coupler pwb assy,nx15/nx25 207-6280-07 37338 c01 ccg42 capacitor, ceramic, 50pf +10%15000v t500k99cogw8570 56699 t01 207-6052-01 transformer current assy 207-6052-01 37...

  • Page 114: Napa34A

    Napa34a modulator/rf amplifier pwbassy, nx series refdes nautel # description vendor # oem code c001 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x7r,0805 c0805c104k5rac 31433 c002 ccfs60 cap,smt,ceramic,1uf,10%,100v,x7r,1210 12101c105kat2a(ro hs) avx corp c003 - not used not used 37338 c004 - not used not ...

  • Page 115: Napa34A

    Continued from previous page napa34a modulator/rf amplifier pwbassy, nx series refdes nautel # description vendor # oem code c035 - not used not used 37338 c036 - not used not used 37338 c037 - not used not used 37338 c038 - not used not used 37338 c039 - not used not used 37338 c040 cp31 capacitor,...

  • Page 116: Napa34A

    Continued from previous page napa34a modulator/rf amplifier pwbassy, nx series refdes nautel # description vendor # oem code c071 ccfs60 cap,smt,ceramic,1uf,10%,100v,x7r,1210 12101c105kat2a(ro hs) avx corp c072 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x7r,0805 c0805c104k5rac 31433 c073 ccfs60 cap,smt,ce...

  • Page 117: Napa34A

    Continued from previous page napa34a modulator/rf amplifier pwbassy, nx series refdes nautel # description vendor # oem code c104 ccfs60 cap,smt,ceramic,1uf,10%,100v,x7r,1210 12101c105kat2a(ro hs) avx corp c105 ccfs60 cap,smt,ceramic,1uf,10%,100v,x7r,1210 12101c105kat2a(ro hs) avx corp c106 ccfs07 c...

  • Page 118: Napa34A

    Continued from previous page napa34a modulator/rf amplifier pwbassy, nx series refdes nautel # description vendor # oem code c132 - not used not used 37338 c133 ct58 capacitor, smt, 0.47u, 630v,x7r, 20%, j-lead, mlcc ckg57nx7r2j474m( rohs) c134 ct58 capacitor, smt, 0.47u, 630v,x7r, 20%, j-lead, mlcc...

  • Page 119: Napa34A

    Continued from previous page napa34a modulator/rf amplifier pwbassy, nx series refdes nautel # description vendor # oem code cr19 qk50 diode,schottky,600v,10a,sic csd10060a(static) cree inc cr20 qk50 diode,schottky,600v,10a,sic csd10060a(static) cree inc cr21 qk50 diode,schottky,600v,10a,sic csd1006...

  • Page 120: Napa34A

    Continued from previous page napa34a modulator/rf amplifier pwbassy, nx series refdes nautel # description vendor # oem code l09 ls22 choke,smt,common mode,2200 ohm,200ma,1206 dlw31sn222sq2l(r ohs) 3eh09 l10 207-1053-03 inductor assy, 207-1053-03 37338 l11 207-1053-03 inductor assy, 207-1053-03 3733...

  • Page 121: Napa34A

    Continued from previous page napa34a modulator/rf amplifier pwbassy, nx series refdes nautel # description vendor # oem code r015 rad17 resistor, smt, mf, 221 ohms,1% 1/4w rk73h2bl2210f 59124 r016 rad12 resistor, smt, mf, 82.5 ohms,1% 1/4w rk73h2bl82r5f 59124 r017 rad12 resistor, smt, mf, 82.5 ohms,...

  • Page 122: Napa34A

    Continued from previous page napa34a modulator/rf amplifier pwbassy, nx series refdes nautel # description vendor # oem code r051 rae13 resistor, smt, mf, 1.0m ohms,1% 1/4w rk73h2bl1004f 59124 r052 rae13 resistor, smt, mf, 1.0m ohms,1% 1/4w rk73h2bl1004f 59124 r053 rae13 resistor, smt, mf, 1.0m ohms...

  • Page 123: Napa34A

    Continued from previous page napa34a modulator/rf amplifier pwbassy, nx series refdes nautel # description vendor # oem code r088 rffs50 resistor,smt,mf,10.0kohms,1%,1/10w,0603 rk73h1jltd1002f 59124 r089 rffs50 resistor,smt,mf,10.0kohms,1%,1/10w,0603 rk73h1jltd1002f 59124 r090 rffs50 resistor,smt,mf...

  • Page 124: Napa34A

    Continued from previous page napa34a modulator/rf amplifier pwbassy, nx series refdes nautel # description vendor # oem code r123 rad85z resistor, smt, 0 ohms, 1%, 1w2512 cr2512-1w-000t- sp(rohs) r124 rad33 resistor, smt, mf, 4750 ohms,1%, 1/4w rk73h2bl4751f 59124 r125 rad33 resistor, smt, mf, 4750 ...

  • Page 125: Napa34A

    Continued from previous page napa34a modulator/rf amplifier pwbassy, nx series refdes nautel # description vendor # oem code u20 udts03 ic,smt,rs-485 transceiver,sgl,soic-8 ds36c278tm(static ) 27014 u21 ulas02 ic,smt,opamp,quad,rail-to-rail,soic-14 tlv2374id(static) 01295 u22 ux95 ic,smt,micro, adc,...

  • Page 126: Napc160B/01

    Napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code bt01 bblt01 battery, lithium, 3v,20mm coin cell cr2032 panas c001 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c002 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3ra...

  • Page 127: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code c038 ccfs53 cap, smt, ceramic,47uf,20%,6.3v, 1210 c3225x5r0j476m(ro hs) 56289 c039 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c040 ccfs52 cap, smt, ...

  • Page 128: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code c076 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c077 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c078 ccfs52 cap, smt, ce...

  • Page 129: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code c115 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c116 ccfs03 cap,smt,ceramic,0.0047uf,10%,50v,x7r,0603 c0603c472k5rac 31433 c117 ccfs52 cap, smt, cer...

  • Page 130: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code c154 ccfs62 cap, smt, ceramic, 10uf, 10%,25v c3225x5r1e106k c155 ccfs23 cap,smt,ceramic,18pf,2%,50v,c0g,0603 c0603c180g5gac 31433 c156 ccfs04 cap,smt,ceramic,0.01uf,10%,50v,x7r...

  • Page 131: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code c193 ccfs04 cap,smt,ceramic,0.01uf,10%,50v,x7r,0603 c0603c103k5rac 31433 c194 ccfs04 cap,smt,ceramic,0.01uf,10%,50v,x7r,0603 c0603c103k5rac 31433 c195 ccfs52 cap, smt, ceramic,...

  • Page 132: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code c232 ccfs04 cap,smt,ceramic,0.01uf,10%,50v,x7r,0603 c0603c103k5rac 31433 c233 ccfs04 cap,smt,ceramic,0.01uf,10%,50v,x7r,0603 c0603c103k5rac 31433 c234 ccfs04 cap,smt,ceramic,0....

  • Page 133: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code c271 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c272 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c273 ccfs52 cap, smt, ce...

  • Page 134: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code cr26 qr70 suppressor, transient voltage,smt 60v clamp 0603esda- tr1(rohs) 71400 cr27 qr70 suppressor, transient voltage,smt 60v clamp 0603esda- tr1(rohs) 71400 cr28 qr70 suppre...

  • Page 135: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code cr60 qdzs04 diode,smt,zener,39v,5%,3w,smb 1smb5939bt3 04713 cr61 qdrs01 diode,smt,switching,250v,0.2a,sod-323 bas21ht1(static) 04713 cr62 qdrs01 diode,smt,switching,250v,0.2a,s...

  • Page 136: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code ds12 qdls01 diode, smt, led, green,(560nm), 0603 597-5312- 402f(static)(rohs) 83330 ds13 qdls01 diode, smt, led, green,(560nm), 0603 597-5312- 402f(static)(rohs) 83330 ds14 qdl...

  • Page 137: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code j26 jf47 conn, header,square post,gold,dual,40-pin 4-102973-0 09482 j27 jm44 conn, modular jack, rj45, shld, side, pwb, 50u 556591-1 09482 l01 la16 inductor, choke, 2.5 turns, ...

  • Page 138: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code r014 rffs50 resistor,smt,mf,10.0kohms,1%,1/10w,0603 rk73h1jltd1002f 59124 r015 rffs46 resistor,smt,mf,4750ohms,1%,1/10w,0603 rk73h1jltd4751f 59124 r016 rffs26 resistor,smt,mf,1...

  • Page 139: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code r053 rffs34 resistor,smt,mf,475ohms,1%,1/10w,0603 rk73h1jltd4750f 59124 r054 rffs34 resistor,smt,mf,475ohms,1%,1/10w,0603 rk73h1jltd4750f 59124 r055 rffs38 resistor,smt,mf,1000...

  • Page 140: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code r092 rffs38 resistor,smt,mf,1000ohms,1%,1/10w,0603 rk73h1jltd1001f 59124 r093 rffs46 resistor,smt,mf,4750ohms,1%,1/10w,0603 rk73h1jltd4751f 59124 r094 rffs50 resistor,smt,mf,10...

  • Page 141: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code r130 rt20 resistor,smt,49.9 ohms, 1% rk73h2et49r9f 59124 r131 rt20 resistor,smt,49.9 ohms, 1% rk73h2et49r9f 59124 r132 rt20 resistor,smt,49.9 ohms, 1% rk73h2et49r9f 59124 r133 ...

  • Page 142: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code r169 rffs55 resistor,smt,mf,27.4kohms,1%,1/10w,0603 rk73h1jltd2742f 59124 r170 rffs50 resistor,smt,mf,10.0kohms,1%,1/10w,0603 rk73h1jltd1002f 59124 r171 rffs50 resistor,smt,mf,...

  • Page 143: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code r208 rad25 resistor, smt, mf, 1000 ohms,1% 1/4w rk73h2bl1001f 59124 r209 rffs34 resistor,smt,mf,475ohms,1%,1/10w,0603 rk73h1jltd4750f 59124 r210 rffs50 resistor,smt,mf,10.0kohm...

  • Page 144: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code r247 rffs50 resistor,smt,mf,10.0kohms,1%,1/10w,0603 rk73h1jltd1002f 59124 r248 rffs14 resistor,smt,mf,10.0ohms,1%,1/10w,0603 rk73h1jltd10r0f 59124 r249 rffs14 resistor,smt,mf,1...

  • Page 145: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code r286 rffs46 resistor,smt,mf,4750ohms,1%,1/10w,0603 rk73h1jltd4751f 59124 r287 rffs50 resistor,smt,mf,10.0kohms,1%,1/10w,0603 rk73h1jltd1002f 59124 r288 rffs50 resistor,smt,mf,1...

  • Page 146: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code r325 rad33 resistor, smt, mf, 4750 ohms,1%, 1/4w rk73h2bl4751f 59124 r326 rad33 resistor, smt, mf, 4750 ohms,1%, 1/4w rk73h2bl4751f 59124 r327 rad33 resistor, smt, mf, 4750 ohm...

  • Page 147: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code rt03 rt16 thermistor, ptc, .50-.77 ohms, 0.5a hold rxe050 06090 rt04 rt17 thermistor, ptc, .15-.25 ohms, 1.1a hold rxe110 06090 s01 sd77 switch, smt, spst, momentary,w/esd gnd ...

  • Page 148: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code tp20 haj66 terminal, smt, test point, pwb tp-107-02-1- t(rohs) components corp tp32 haj66 terminal, smt, test point, pwb tp-107-02-1- t(rohs) components corp tp36 haj66 termina...

  • Page 149: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code u16 ud66 ic,smt,quad rs-422 diff linedriver ds26c31t/ds26c31m (static) national u17 ud66 ic,smt,quad rs-422 diff linedriver ds26c31t/ds26c31m (static) national u18 ud70 ic,smt,...

  • Page 150: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code u41 ud71 ic,smt,op-amp,dual,currentfeedback,so-8 opa2691id(static) texas u42 udos01 ic,smt,dual optocoupler,soic-8 mocd223-m(static) 7d893 u43 udls10 ic,smt,cmos,quad 2-input n...

  • Page 151: Napc160B/01

    Continued from previous page napc160b/01 control/interface pwb assy, nxseries refdes nautel # description vendor # oem code u69 udls04 ic,smt,cmos,8-bit shft reg,par i/p, soic-16 mc74hc165ad(stati c) 04713 u70 udls06 ic,smt,cmos,quad tri-state buffer, soic-14 mc74hc125ad(stati c) 04713 u71 udls04 ic...

  • Page 152: Nape78A/01

    Nape78a/01 digital am exciter pwb assy refdes nautel # description vendor # oem code c001 ccfs24 cap,smt,ceramic,22pf,2%,50v,c0g,0603 c0603c220g5gac 31433 c002 ccfs32 cap,smt,ceramic,100pf,2%,50v,c0g,0603 c0603c101g5gac 31433 c003 ccfs32 cap,smt,ceramic,100pf,2%,50v,c0g,0603 c0603c101g5gac 31433 c00...

  • Page 153: Nape78A/01

    Continued from previous page nape78a/01 digital am exciter pwb assy refdes nautel # description vendor # oem code c039 ccfs53 cap, smt, ceramic,47uf,20%,6.3v, 1210 c3225x5r0j476m(ro hs) 56289 c040 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c041 ccfs04 cap,smt,ceramic,0.01...

  • Page 154: Nape78A/01

    Continued from previous page nape78a/01 digital am exciter pwb assy refdes nautel # description vendor # oem code c078 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c079 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c080 ccfs57 cap,smt,ceramic,10uf,2...

  • Page 155: Nape78A/01

    Continued from previous page nape78a/01 digital am exciter pwb assy refdes nautel # description vendor # oem code c117 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c118 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c119 ccfs52 cap, smt, ceramic, 0.1...

  • Page 156: Nape78A/01

    Continued from previous page nape78a/01 digital am exciter pwb assy refdes nautel # description vendor # oem code c156 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c157 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c158 ccfs52 cap, smt, ceramic, 0.1...

  • Page 157: Nape78A/01

    Continued from previous page nape78a/01 digital am exciter pwb assy refdes nautel # description vendor # oem code c195 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c196 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c197 ccfs52 cap, smt, ceramic, 0.1...

  • Page 158: Nape78A/01

    Continued from previous page nape78a/01 digital am exciter pwb assy refdes nautel # description vendor # oem code j07 jf47 conn, header,square post,gold,dual,40-pin 4-102973-0 09482 l01 ls21 inductor,smt,390nh,375ma,2520 nlv25t-r39j- pf(rohs) tdk l02 ls20 inductor,smt,560nh,325ma,2520 nlv25t-r56j- p...

  • Page 159: Nape78A/01

    Continued from previous page nape78a/01 digital am exciter pwb assy refdes nautel # description vendor # oem code r20 rffs02 resistor,smt,mf,1.00ohms,1%,1/10w,0603 rk73h1jltd1r00f 59124 r21 rae34 resistor,smt,mf,49.9r,1%,1/10w0603 rk73h1jt49r9f 59124 r22 rffs18 resistor,smt,mf,22.1ohms,1%,1/10w,0603...

  • Page 160: Nape78A/01

    Continued from previous page nape78a/01 digital am exciter pwb assy refdes nautel # description vendor # oem code r59 rffs50 resistor,smt,mf,10.0kohms,1%,1/10w,0603 rk73h1jltd1002f 59124 r60 rffs50 resistor,smt,mf,10.0kohms,1%,1/10w,0603 rk73h1jltd1002f 59124 r61 rffs50 resistor,smt,mf,10.0kohms,1%,...

  • Page 161: Nape78A/01

    Continued from previous page nape78a/01 digital am exciter pwb assy refdes nautel # description vendor # oem code r98 rffs50 resistor,smt,mf,10.0kohms,1%,1/10w,0603 rk73h1jltd1002f 59124 s01 sa60 switch,smt,mom.,1pstno ksc321g itt indus t01 tz93 transformer, smt,4:1,0.03 to 125mhz adt4-6t t02 tz88 t...

  • Page 162: Nape78A/01

    Continued from previous page nape78a/01 digital am exciter pwb assy refdes nautel # description vendor # oem code u05 ux67 ic,smt,linear regulator,3a adj,q-5 dd lt1764aeq(static) 64155 u06 udls08 ic,smt,cmos,phase locked loop,so-16 adf4116bruz(static) 27014 u07 uw90 ic,smt,quad 2 to 1 data sel/mux 3...

  • Page 163: Nape78A/01

    Continued from previous page nape78a/01 digital am exciter pwb assy refdes nautel # description vendor # oem code u34 udts05 ic,smt,rs-232 transceiver,3.3v,so-16 adm3202arn(static ) 45496 u35 up95 ic,smt,stereo adc,24bit,96khz,tssop-28 ad1871yrs(static) 45496 u36 uw91 ic,smt,spi uart,3.3v sc16is740i...

  • Page 164: Napi106

    Napi106 remote interface pwb assy refdes nautel # description vendor # oem code c01 ccfs10 cap,smt,ceramic,1uf,10%,25v,,x7r,1206 c1206c105k3rac 31433 cr01 qdrs01 diode,smt,switching,250v,0.2a,sod-323 bas21ht1(static) 04713 cr02 qdrs01 diode,smt,switching,250v,0.2a,sod-323 bas21ht1(static) 04713 cr03...

  • Page 165: Napi106

    Continued from previous page napi106 remote interface pwb assy refdes nautel # description vendor # oem code ds16 qdls04 diode,smt,led,bicolor,red/green,1210 597-7701- 507(static) 83330 e01 jq15 conn, post shunt, 2 pos, .10 centreline 390088-2 09482 e02 jq15 conn, post shunt, 2 pos, .10 centreline 3...

  • Page 166: Napi106

    Continued from previous page napi106 remote interface pwb assy refdes nautel # description vendor # oem code r14 rad27 resistor, smt, mf, 1500 ohms,1% 1/4w rk73h2bl1501f 59124 r15 rad27 resistor, smt, mf, 1500 ohms,1% 1/4w rk73h2bl1501f 59124 r16 rad27 resistor, smt, mf, 1500 ohms,1% 1/4w rk73h2bl15...

  • Page 167: Napi152A

    Napi152a rack interface pwb assy refdes nautel # description vendor # oem code c001 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c002 ccfs60 cap,smt,ceramic,1uf,10%,100v,x7r,1210 12101c105kat2a(ro hs) avx corp c003 ccfs01 cap,smt,ceramic,0.001uf,10%,50v,x7r,0603 c0603c102k5...

  • Page 168: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code c037 ctfs03 cap,smt,tantalum,10uf,10%,35v,2917 t494d106k035as 31433 c038 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c039 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r...

  • Page 169: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code c074 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c075 ccfs60 cap,smt,ceramic,1uf,10%,100v,x7r,1210 12101c105kat2a(ro hs) avx corp c076 ccfs52 cap, smt, ceramic, 0.1u...

  • Page 170: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code c110 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c111 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c112 ccfs52 cap, smt, ceramic, 0.1uf, 10...

  • Page 171: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code c146 ctfs03 cap,smt,tantalum,10uf,10%,35v,2917 t494d106k035as 31433 c147 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r, 0603 c0603c104k3rac 31433 c148 ccfs52 cap, smt, ceramic, 0.1uf, 10%25v x7r...

  • Page 172: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code c184 ccfs09 cap,smt,ceramic,0.47uf,10%,25v,x7r,0805 c0805c474k3rac 31433 c185 ccfs06 cap,smt,ceramic,0.047uf,10%,50v,x7r,0603 c0603c473k5rac 31433 c186 - not used not used 37338 c187 - not use...

  • Page 173: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code cr01 qdrs01 diode,smt,switching,250v,0.2a,sod-323 bas21ht1(static) 04713 cr02 qdrs01 diode,smt,switching,250v,0.2a,sod-323 bas21ht1(static) 04713 cr03 qm60 diode, schottky rectifier, 60v, 16a ...

  • Page 174: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code j13 jq34 conn, socket, d-sub, 9 pin, pwb mt k22-e9s-nj kycon j14 jq34 conn, socket, d-sub, 9 pin, pwb mt k22-e9s-nj kycon j15 js12 conn, plug, d-sub, 25 pin, pwb mt k22x-b25p-nj 63590 j16 jf47...

  • Page 175: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code r023 rffs50 resistor,smt,mf,10.0kohms,1%,1/10w,0603 rk73h1jltd1002f 59124 r024 rffs52 resistor,smt,mf,15.0kohms,1%,1/10w,0603 rk73h1jltd1502f 59124 r025 - not used not used 37338 r026 rffs50 r...

  • Page 176: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code r062 rffs50 resistor,smt,mf,10.0kohms,1%,1/10w,0603 rk73h1jltd1002f 59124 r063 rffs01 resistor,smt,mf,0.0ohms,jumper,0603 rk73z1jltd 59124 r064 rffs70 resistor,smt,mf,475kohms,1%,1/10w,0603 rk...

  • Page 177: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code r101 rffs50 resistor,smt,mf,10.0kohms,1%,1/10w,0603 rk73h1jltd1002f 59124 r102 rffs14 resistor,smt,mf,10.0ohms,1%,1/10w,0603 rk73h1jltd10r0f 59124 r103 - not used not used 37338 r104 rffs44 re...

  • Page 178: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code r140 rffs58 resistor,smt,mf,47.5kohms,1%,1/10w,0603 rk73h1jltd4752f 59124 r141 rffs58 resistor,smt,mf,47.5kohms,1%,1/10w,0603 rk73h1jltd4752f 59124 r142 rffs70 resistor,smt,mf,475kohms,1%,1/10...

  • Page 179: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code r179 rffs46 resistor,smt,mf,4750ohms,1%,1/10w,0603 rk73h1jltd4751f 59124 r180 rffs26 resistor,smt,mf,100ohms,1%,1/10w,0603 rk73h1jltd1000f 59124 r181 rffs26 resistor,smt,mf,100ohms,1%,1/10w,06...

  • Page 180: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code r216 - not used not used 37338 r217 - not used not used 37338 r218 rad58 resistor, smt, 3.9 ohms, 1%, 1w, 2512 erj-1trqf3r9u r219 - not used not used 37338 r220 rffs30 resistor,smt,mf,221ohms,...

  • Page 181: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code r253 rad58 resistor, smt, 3.9 ohms, 1%, 1w, 2512 erj-1trqf3r9u r254 - not used not used 37338 r255 - not used not used 37338 r256 rad75 resistor, smt, 2 ohms, 5%, 1/4w, 1206 erj- 8geyj2r0v(sta...

  • Page 182: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code t01 td46 signal transformer, 1.1va230v/36v dst-2-36 08779 tp07 haj66 terminal, smt, test point, pwb tp-107-02-1- t(rohs) components corp tp15 haj66 terminal, smt, test point, pwb tp-107-02-1- ...

  • Page 183: Napi152A

    Continued from previous page napi152a rack interface pwb assy refdes nautel # description vendor # oem code u13 udms01 ic, smt, sram, 32kx8, soic-28(wide) cy62256nll- 55snxi(static)(roh s) 65786 u14 ut101 ic,dc-dc converter,out +/-15v@0.5a,15w, in 9-36v aee00cc18-l (static) astec u15 umas01 ic,smt,a...

  • Page 184: Napi154

    Napi154 pdm drive distribution pwb refdes nautel # description vendor # oem code c001 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x7r,0805 c0805c104k5rac 31433 c002 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x7r,0805 c0805c104k5rac 31433 c003 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x7r,0805 c0805c104k5rac 31433 c00...

  • Page 185: Napi154

    Continued from previous page napi154 pdm drive distribution pwb refdes nautel # description vendor # oem code c040 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x7r,0805 c0805c104k5rac 31433 c041 ccfs10 cap,smt,ceramic,1uf,10%,25v,,x7r,1206 c1206c105k3rac 31433 c042 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x7r,0...

  • Page 186: Napi154

    Continued from previous page napi154 pdm drive distribution pwb refdes nautel # description vendor # oem code c079 ccfs10 cap,smt,ceramic,1uf,10%,25v,,x7r,1206 c1206c105k3rac 31433 c080 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x7r,0805 c0805c104k5rac 31433 c081 ccfs10 cap,smt,ceramic,1uf,10%,25v,,x7r,12...

  • Page 187: Napi154

    Continued from previous page napi154 pdm drive distribution pwb refdes nautel # description vendor # oem code l03 ls22 choke,smt,common mode,2200 ohm,200ma,1206 dlw31sn222sq2l(r ohs) 3eh09 l04 ls22 choke,smt,common mode,2200 ohm,200ma,1206 dlw31sn222sq2l(r ohs) 3eh09 l05 ls22 choke,smt,common mode,2...

  • Page 188: Napi154

    Continued from previous page napi154 pdm drive distribution pwb refdes nautel # description vendor # oem code r26 rffs34 resistor,smt,mf,475ohms,1%,1/10w,0603 rk73h1jltd4750f 59124 r27 rffs34 resistor,smt,mf,475ohms,1%,1/10w,0603 rk73h1jltd4750f 59124 r28 - not used not used 37338 r29 rffs34 resisto...

  • Page 189: Napi154

    Continued from previous page napi154 pdm drive distribution pwb refdes nautel # description vendor # oem code r65 - not used not used 37338 r66 - not used not used 37338 r67 rffs34 resistor,smt,mf,475ohms,1%,1/10w,0603 rk73h1jltd4750f 59124 r68 rffs34 resistor,smt,mf,475ohms,1%,1/10w,0603 rk73h1jltd...

  • Page 190: Napi154

    Continued from previous page napi154 pdm drive distribution pwb refdes nautel # description vendor # oem code u14 ud66 ic,smt,quad rs-422 diff linedriver ds26c31t/ds26c31m (static) national u15 ud66 ic,smt,quad rs-422 diff linedriver ds26c31t/ds26c31m (static) national u16 ud66 ic,smt,quad rs-422 di...

  • Page 191: Napi154

    Continued from previous page napi154 pdm drive distribution pwb refdes nautel # description vendor # oem code u40 ud66 ic,smt,quad rs-422 diff linedriver ds26c31t/ds26c31m (static) national u41 ud66 ic,smt,quad rs-422 diff linedriver ds26c31t/ds26c31m (static) national u42 ud66 ic,smt,quad rs-422 di...

  • Page 192: Napi95A/02

    Napi95a/02 power module interface pwb refdes nautel # description vendor # oem code c01 cbp15 capacitor, electrolytic, 470uf450v 381lr471m450a052 cornell 14655 c02 - not used not used 37338 c03 cbp15 capacitor, electrolytic, 470uf450v 381lr471m450a052 cornell 14655 c04 - not used not used 37338 c05 ...

  • Page 193: Napi95A/02

    Continued from previous page napi95a/02 power module interface pwb refdes nautel # description vendor # oem code j07 ju25 mta, keyed square post headerassy, 4 pin 647123-4 00779 j08 - not used not used 37338 j09 ju25 mta, keyed square post headerassy, 4 pin 647123-4 00779 j10 - not used not used 373...

  • Page 194: Napi98

    Napi98 rf drive distribution pwb assy refdes nautel # description vendor # oem code c001 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x7r,0805 c0805c104k5rac 31433 c002 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x7r,0805 c0805c104k5rac 31433 c003 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x7r,0805 c0805c104k5rac 31433 ...

  • Page 195: Napi98

    Continued from previous page napi98 rf drive distribution pwb assy refdes nautel # description vendor # oem code c040 ccfs10 cap,smt,ceramic,1uf,10%,25v,,x7r,1206 c1206c105k3rac 31433 c041 ccfs10 cap,smt,ceramic,1uf,10%,25v,,x7r,1206 c1206c105k3rac 31433 c042 ccfs10 cap,smt,ceramic,1uf,10%,25v,,x7r,...

  • Page 196: Napi98

    Continued from previous page napi98 rf drive distribution pwb assy refdes nautel # description vendor # oem code c079 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x7r,0805 c0805c104k5rac 31433 c080 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x7r,0805 c0805c104k5rac 31433 c081 ccfs07 cap,smt,ceramic,0.1uf,10%,50v,x...

  • Page 197: Napi98

    Continued from previous page napi98 rf drive distribution pwb assy refdes nautel # description vendor # oem code r06 rad12 resistor, smt, mf, 82.5 ohms,1% 1/4w rk73h2bl82r5f 59124 r07 rffs01 resistor,smt,mf,0.0ohms,jumper,0603 rk73z1jltd 59124 r08 rad12 resistor, smt, mf, 82.5 ohms,1% 1/4w rk73h2bl8...

  • Page 198: Napi98

    Continued from previous page napi98 rf drive distribution pwb assy refdes nautel # description vendor # oem code u19 ud66 ic,smt,quad rs-422 diff linedriver ds26c31t/ds26c31m (static) national u20 ud66 ic,smt,quad rs-422 diff linedriver ds26c31t/ds26c31m (static) national u21 ud66 ic,smt,quad rs-422...

  • Page 199: Napp10/02

    Napp10/02 directional coupler pwb assy,nx15/nx25 refdes nautel # description vendor # oem code c01 cb06 capacitor, mica, dipped, 9100pf 2% 500v cm07fd912g03 14655 c02 cb06 capacitor, mica, dipped, 9100pf 2% 500v cm07fd912g03 14655 c03 cb06 capacitor, mica, dipped, 9100pf 2% 500v cm07fd912g03 14655 c...

  • Page 200: Napp10/02

    Continued from previous page napp10/02 directional coupler pwb assy,nx15/nx25 refdes nautel # description vendor # oem code r05 rbp07 resistor, film, 100 ohms, 5%2w gs-3, 100 ohms 75042 r06 rk31 resistor, film, 220 ohms, 5%,2w gs-3, 220 ohms 75042 r07 rap07 resistor, film, 330 ohms, 2pc1/2w rl20s331...

  • Page 201: Nara59C

    Nara59c final assy, nx15/nx25 (rls 5) refdes nautel # description vendor # oem code a01 nah60a back plane, rf combiner - ( 207-6060-01 37338 a02 nah60a back plane, rf combiner - ( 207-6060-01 37338 a03 nah60a back plane, rf combiner - ( 207-6060-01 37338 a04 nah60a back plane, rf combiner - ( 207-60...

  • Page 202: Nara59C

    Continued from previous page nara59c final assy, nx15/nx25 (rls 5) refdes nautel # description vendor # oem code a40 207-2010-06 207-2010-06 37338 a41 207-6111 207-6111 37338 a42 207-6213-04 control door assy-nx series voltage probe assy, nx15/ nx25 current probe-nx25, 50,100,200 207-6213-04 37338 a...

  • Page 203: Nara59C

    Continued from previous page nara59c final assy, nx15/nx25 (rls 5) refdes nautel # description vendor # oem code c28 * see master work order * see master work order 37338 c29 * see master work order * see master work order 37338 c30 * see master work order * see master work order 37338 c31 * see mas...

  • Page 204: Nax243A

    Nax243a b+ distribution assy refdes nautel # description vendor # oem code f01 fd24 fuse, 70a, 600v, class j, openindicator ajt70 3wcg0 f02 fd24 fuse, 70a, 600v, class j, openindicator ajt70 3wcg0 f03 fd24 fuse, 70a, 600v, class j, openindicator ajt70 3wcg0 f04 fd24 fuse, 70a, 600v, class j, openind...

  • Page 205

    Nx25/nx15 troubleshooting manual wiring/connector lists issue 5.0 2016-05-06 page 4-1 section 4: wiring/connector lists this section contains the wiring information for the hard-wired assemblies of the transmitter, and applicable connector mating information. Wiring lists provided wiring lists are p...

  • Page 206

    Nx25/nx15 troubleshooting manual wiring/connector lists page 4-2 issue 5.0 2016-05-06 table 4.1: wiring lists provided table # description table 4.3 table 4.5 nx25/nx15 transmitter - wiring list ( page 4-2 ) fan tray assembly (nautel part number: 207-8133) - wiring list ( page 4-11 ) table 4.2: conn...

  • Page 207

    Nx25/nx15 troubleshooting manual wiring/connector lists issue 5.0 2016-05-06 page 4-3 source destination wire # color size remarks a46u8-(ac1) a46c1-(+) 24 white 14 a46u8-(ac2) a46c2-(+) 25 white 14 a46u9-(ac1) a46c3-(+) 26 white 14 a46u8-(+) a46k1-1 27 white 14 a46u9-(+) a46k1-1 28 white 14 a46r7-2...

  • Page 208

    Nx25/nx15 troubleshooting manual wiring/connector lists page 4-4 issue 5.0 2016-05-06 source destination wire # color size remarks p08-02 p14-02 132 white 20 p08-03 p14-03 133 white 20 p08-04 p14-04 134 black 20 p08-05 p14-05 135 white 22 p08-06 p14-06 136 white 22 p08-07 p14-07 137 black 20 p08-08 ...

  • Page 209

    Nx25/nx15 troubleshooting manual wiring/connector lists issue 5.0 2016-05-06 page 4-5 source destination wire # color size remarks p09-21 p16-03 165 white 24 p09-23 p16-02 166 white 24 p09-24 a48u1tb3-8 167 black 22 p10-01 p15-01 168 white 20 p10-05 p15-05 169 white 22 p10-06 p15-06 170 black 20 p11...

  • Page 210

    Nx25/nx15 troubleshooting manual wiring/connector lists page 4-6 issue 5.0 2016-05-06 source destination wire # color size remarks p17-06 p27-08 198 shield ? E3 t1xf1-2 202 white 14 xf12, com fuse (l) e4 t1xf1-4 203 white 14 xf1 4 , line fuse (r) u3-l t1xf1-2 204 white 14 u3-n t1xf1-4 205 white 14 u...

  • Page 211

    Nx25/nx15 troubleshooting manual wiring/connector lists issue 5.0 2016-05-06 page 4-7 source destination wire # color size remarks line 2-2 p35-2 236 brown 14 line 3-2 p35-3 237 gray 14 gnd near a48 p35-4 238 grn/ylw 14 w65p1-(+) e1-b - blk/ws 18 w65p1-(-) e2-b - black 18 w61p1 w61p2 - w62p1 w62p2 -...

  • Page 212

    Nx25/nx15 troubleshooting manual wiring/connector lists page 4-8 issue 5.0 2016-05-06 source destination wire # color size remarks t1-line2 line 2-2 - black 2 t1-line3 line 3-2 - black 2 table 4.3: nx25 transmitter - wiring list.

  • Page 213

    Nx25/nx15 troubleshooting manual wiring/connector lists issue 5.0 2016-05-06 page 4-9 table 4.4: nx25 transmitter - connector mating information connector mate note a41e1 c1e1 voltage probe e1 e1 e2 e2 e3 a6e1 e4 a6e2 p1 a35j1 p2 a36j1 p3 a37j1 p4 a38j1 p5 a39j1 p6 a6j8 p7 a6j9 p8 a6j11 p9 a6j12 p10...

  • Page 214

    Nx25/nx15 troubleshooting manual wiring/connector lists page 4-10 issue 5.0 2016-05-06 connector mate note w4p1 a16a1j1 w4p2 a8j2d w6p1 a17a1j1 w6p2 a8j3d w8p1 a18a1j1 w8p2 a8j4d w10p1 a19a1j1) w10p2 a8j5d w12p1 a20a1j1 w12p2 a8j1g w14p1 a21a1j1 w14p2 a8j2g w16p1 a22a1j1 w16p2 a8j3g w18p1 a23a1j1 w1...

  • Page 215

    Nx25/nx15 troubleshooting manual wiring/connector lists issue 5.0 2016-05-06 page 4-11 connector mate note w67p1 a11a1j3a w67p2 a40a1u1com1 w69p1 a6j1 w69p2 a1a1j6 w70p1 a6j5 w70p2 a5a1j6 table 4.5: fan tray assembly (nautel part number: 207-8139) - wiring list source destination wire # color size r...

  • Page 216

    Nx25/nx15 troubleshooting manual wiring/connector lists page 4-12 issue 5.0 2016-05-06.

  • Page 217

    Nx25/nx15 troubleshooting manual reading electrical schematics issue 5.0 2016-05-06 page 5-1 section 5: reading electrical schematics this section contains electrical schematics and logic diagrams for the transmitter. Block diagrams, simplified electrical schematics, and logic diagrams may be includ...

  • Page 218

    Nx25/nx15 troubleshooting manual reading electrical schematics page 5-2 issue 5.0 2016-05-06 unique symbols nautel uses unique symbols on electrical schematics to describe logic (two-state) signals. These signals differ from single-state signals or analog signals that may have multiple values. Type ...

  • Page 219

    Nx25/nx15 troubleshooting manual reading electrical schematics issue 5.0 2016-05-06 page 5-3 figures sd-1 through sd-4 identify each major stage and its detailed interconnection. Each stage contains cross-references that identify which blocks are the signal sources for inputs, or the destinations fo...

  • Page 220

    Nx25/nx15 troubleshooting manual reading electrical schematics page 5-4 issue 5.0 2016-05-06 2. Follow the family tree branches to the block that contains the desired reference designation, while noting the nautel nomenclatures and names of all higher assemblies in the path. Example: a15 nap39a rf p...

  • Page 221

    Nx25/nx15 troubleshooting manual reading electrical schematics issue 5.0 2016-05-06 page 5-5 table 5.1: list of electrical schematics figure # title sd-1 nx25/nx15 transmitter - ac-dc power stage sd-2 nx25/nx15 transmitter - exciter stage sd-3 nx25/nx15 transmitter - control/monitor stage sd-4 nx25/...

  • Page 222

    Nx25/nx15 troubleshooting manual reading electrical schematics page 5-6 issue 5.0 2016-05-06.

  • Page 223

    Issue 5.0 2016-05-06 sd-1 + figure sd-1: nx15/nx25 transmitter - ac-dc power stage Ø 2 Ø 1 g l n g l n g l 3 2 1 b cn1 cn1 6 2 3 4 1 u1 t1 gnd u3 f2 15a p11 p12 e4 e3 f1 15a 3 2 1 j7 j15 1 3 4 6 p8 p9 p11 510 450 410 350 gnd -15v +15v +12v +30v gnd c1 10 5 tb3 j1 b+ a9 70a f5 f4 f3 f2 13w r1 27k 13w...

  • Page 224

    Issue 5.0 2016-05-06 sd-2 figure sd-2: nx15/nx25 transmitter - exciter stage stage from from tx (-) j5 j1 p17 p42 w2p1 gnd -15v +5v +5v 1 khz 1 pps b a j18 j16 p17 to stage rx (-) tx (+) j8 j2 p14 w1p1 pwb +15v gnd j2 j2 pwb pwb j19 j17 s2070233 v2 gnd gnd gnd gnd internal bus (-) -15v +15v +15v +15...

  • Page 225

    Issue 5.0 2016-05-06 sd-3 figure sd-3: nx15/nx25 transmitter - control/monitor stage j9 j7 pdm aes 1 aes 2 audio gnd (+) gnd (+) (-) (+) shld (-) shld (+) j22 8 6 4 2 j24 gnd tb1 (usb) usb usb com2 audio cpu * j2 (-) ps tx rx gnd (n/u) tx rx gnd +5v gnd (+) (-) (+) (-) (+) (-) (+) (+) j23 cts gnd ds...

  • Page 226

    Issue 5.0 2016-05-06 sd-4 figure sd-4: rf power stage (sheet 1 of 2) p10 p15 j14 j13 j5 j9 j7 +48v +48v p1 j1 j1 j1 j1 w4p1 w2p1 a15 a1a2 p2 +48v +48v j3 fan j2 a17 a2a2 (n/u) gnd (n/u) gnd +48v +48v +15v +15v +15v +15v a18 a2a3 a2a3t1 a2a2t1 stage +48v +48v pwb a8 j2 j1 j3 a3a1 +48v a8 p4 rack j3 j...

  • Page 227

    Issue 5.0 2016-05-06 sd-5 figure sd-5: rf power stage, rf output filter (sheet 2 of 2) l7 * l8 * * * * l9 p27 j3 l1 10 c26 35v 0.1 c24 j3 p27 -15v * * * c16 * * * * c21 * * c26 * * * l2 10 c23 35v 1 t1 1 0.1 c21 2 5 6 a43 7 8 j1 j2 key j1 8 9 s1:8 stage from +15v t1 probe 50pf c1 l10 * c33 c32 c31 1...

  • Page 228

    Issue 5.0 2016-05-06 sd-6 figure sd-6: 5 kw rf power block +15v e2 j6 5 4 j6 +15v pwb a1p1 rf j1 j7 p1 e a1u1 t1 b+ 6 7 4 2 1 a1p1 rf j3 relay assy k1 e t1 +48v e1 2 1 a?A1 +48v + - a b j11 f3 b+ j3 3 5 8 a? K1 a b + - b+ return b+ +15v return fan tach (front) module bus (-) rf drive 2 (-) rf drive ...

  • Page 229

    Issue 5.0 2016-05-06 sd-7 figure sd-7: napc160b/01 control/interface pwb (sheet 1 of 7) r170 10.0k cpu pdm miso sck a0 a2 a4 a6 3v 2 1 n/c 5 7 ve a0 a2 a4 a5 a7 a9 a10 a12 a14 10 c9 2 20 ce 22 oe 21 a0 24 a2 1 a5 3 a7 6 a10 8 a12 3 de 1 ro 2 v+ 5 c2- 3 c1- 2 v+ 3 c1- 2 +5v 2 2 +5v +5v +5v +5v +5v cr...

  • Page 230

    Issue 5.0 2016-05-06 sd-8 figure sd-8: napc160b/01 control/interface pwb (sheet 2 of 7) 47 c32 l6 -5v t7 cw -5v +5v 2 in+ 6 gnd 5 le 8 q c93 0.1 (+) (+) (+) (+) (+) (+) (+) (+) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (-) (-) (-) (-) (-) (-) (-) (-) l3 cw 10 1 -5v +5v 7 8 4 3 ...

  • Page 231

    Issue 5.0 2016-05-06 sd-9 figure sd-9: napc160b/01 control/interface pwb (sheet 3 of 7) l4 1.0 c25 c77 0.1 c66 0.1 c65 0.1 c64 0.1 (+) (+) (+) (+) (+) (+) (+) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (-) (-) (-) (-) (-) (-) (-) 1.0 c46 1.0 c27 1.0 c45 1.0 c44 1.0 c23 1...

  • Page 232

    Issue 5.0 2016-05-06 sd-10 figure sd-10: napc160b/01 control/interface pwb (sheet 4 of 7) 70% 80% 10% 20% 7 j19 6 j19 6 j17 8 j19 8 j17 9 j19 9 j17 clock fs (-) i/q l15 sck sck r242 10.0 r310 10.0 3 1 3 1 60% 90% 110% 100% -15v 30% 50% 40% 7 j17 data (+) audio r249 10.0 r248 10.0 r312 10.0 r311 10.0...

  • Page 233

    Issue 5.0 2016-05-06 sd-11 figure sd-11: napc160b/01 control/interface pwb (sheet 5 of 7) 0.1 c169 +5v +5v +5v +5v 4 f +5v +5v +5v +5v 6 h 4 f 14 d 12 b e3:1 e3:2 +5v +5v +5v +5v 3 e +5v +5v +5v +5v 5 g 3 e 13 c 11 a 25 j24 9 j24 +15v-a 7 j24 +15v-a 4 j24 +15v-a 2 j24 +15v-a int ext 0.01 c241 cr70 1...

  • Page 234

    Issue 5.0 2016-05-06 sd-12 figure sd-12: napc160b/01 control/interface pwb (sheet 6 of 7) r19 68.1k 0.1 c51 10 c53 9 sqh 8 gnd 16 vcc 8 gnd 16 vcc 0.1 c255 0.1 c254 0.1 c253 0.1 c252 0.1 c251 0.1 c250 0.1 c249 0.1 c248 tp17 tp8 0.1 c87 fwd tp14 tp1 7 8 0.01 c227 0.01 c226 13 oe 14 a 14 a 13 oe 0.1 c...

  • Page 235

    Issue 5.0 2016-05-06 sd-13 figure sd-13: napc160b/01 control/interface pwb (sheet 7 of 7) - +15v gnd - + +15v sync (-) (-) r100 1500 r120 49.9 + gnd (-) (-) r99 3320 +5v +5v +5v r119 49.9 1000 r359 r121 49.9 r138 49.9 tp48 tp49 c147 0.01 r136 49.9 0.01 c277 1000 r357 r181 49.9 r122 49.9 tp50 +5v 0.1...

  • Page 236

    Issue 5.0 2016-05-06 sd-14 figure sd-14: napi106 remote interface pwb 1 j9 1 j8 5 j8 5 j7 4 j9 7 j9 3 j8 6 j8 8 j8 3 j7 6 j7 8 j7 15 13 11 09 07 05 03 01 +15v +15v +15v +15v +15v +15v 4 j5 6 j5 6 j4 1 j7 5 j9 3 j9 8 j9 6 j9 4 j8 7 j8 2 j7 4 j7 7 j7 16 14 12 10 08 06 04 02 +15v +15v +15v +15v +15v +1...

  • Page 237

    Issue 5.0 2016-05-06 sd-15 figure sd-15: napx46 gps sync pwb (optional) 100 r17 10 c29 2 re 4 di e1:1 0.1 c18 r5 274 4 j3 isp 2 j1 4 j1 8 j1 10 mhz sync 1 pps +5v gnd tp1 tp9 5v 3.3v 0.1 c31 3 de 1 ro tp8 gps_rx gps_tx 274 r22 274 r24 1 j3 2 j3 6 j3 5 j3 3 j3 3 j1 274 r25 rs-485 (-) 9 j1 rs-485 (+) ...

  • Page 238

    Issue 5.0 2016-05-06 sd-16 figure sd-16: napi151 usb audio interface pwb (optional) 10 c13 +5v 0.1 c1 1.0 c4 10 c2 +5v (-) (-) +5v +5v c7 0.1 c8 0.1 c5 0.1 c6 0.1 0.1 c3 1.0 c14 +5v 19 pgnd 11 zgnd 15 voutr 27 sspnd 9 j2 shld 5 j2 (+) 6 j2 2 j2 (+) +5v 562 r12 1 xto 28 xti 6 dgnd 12 agndl 17 agndr 2...

  • Page 239

    Issue 5.0 2016-05-06 sd-17 figure sd-17: napi152a rack interface pwb (sheet 1 of 3) (-) (+) (-) (+) (-) (+) (+) from (-) (+) (-) (+) +5v +5v +5v +5v 18pf c13 d0 d1 d3 d5 d6 3 j16 6 j16 1 j16 5 j16 gnd mosi miso reset a8 a10 a13 a12 a1 a3 a5 a7 d6 d0 d1 d3 d5 d6 +5v vref +5v sck miso to (-) (-) (+) +...

  • Page 240

    Issue 5.0 2016-05-06 sd-18 figure sd-18: napi152a rack interface pwb (sheet 2 of 3) 1210 r43 +5v 13 oe 9 sqh 0.1 c125 +5v 0.01 c126 +5v 6 j14 5 j14 1 2 5 6 +15v adc mosi sck 8 gnd 16 vcc 14 a tp45 tp77 tp68 r169 10.0 tp75 3 4 7 8 0.01 c131 tp44 tp67 tp69 ac sample spare dc current rectifier temp b+ ...

  • Page 241

    Issue 5.0 2016-05-06 sd-19 figure sd-19: napi152a rack interface pwb (sheet 3 of 3) 5 j9 4 j9 2 j9 1 j9 8 j8 7 j8 5 j8 4 j8 2 j8 1 j8 2 vin 1.0 c51 3 j1 4 j2 4 j3 4 j4 3 j5 1 j2 2 j2 2 j1 1 j1 2 j5 1 j5 2 j4 1 j4 7 j1 19 j1 1 j3 2 j3 19 j2 7 j2 19 j5 7 j5 7 j4 19 j4 7 j3 19 j3 0.1 c179 0.1 c144 tp7 ...

  • Page 242

    Issue 5.0 2016-05-06 sd-20 figure sd-20: napi98 rf drive distribution pwb (sheet 1of 2) +5v - + 10 c101 h6 j3 h3 j3 h2 j3 h1 j3 g6 j3 g3 j3 g2 j3 g1 j3 f6 j3 f3 j3 f2 j3 f1 j3 e6 j3 e3 j3 e2 j3 e1 j3 d6 j3 d3 j3 d2 j3 d1 j3 c6 j3 c3 j3 c2 j3 c1 j3 b6 j3 b3 j3 b2 j3 b1 j3 a6 j3 a3 j3 a2 j3 a1 j3 + - ...

  • Page 243

    Issue 5.0 2016-05-06 sd-21 figure sd-21: napi98 rf drive distribution pwb (sheet 2 of 2) - + 0.1 c10 0.1 c35 0.1 c5 0.1 c7 +5v +5v +5v - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +5v +5v +5v - - - - - - - - - - - - - - - - 0.1 c9 0.1 c33 0.1 c34 0.1 c11 0.1 c12 0.1 c36 0.1 c6 0.1...

  • Page 244

    Issue 5.0 2016-05-06 sd-22 figure sd-22: napi154 pdm distribution pwb (sheet 1 of 2) (-) (-) (+) (-) (+) (-) (+) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (-) (+) (-) (+) (-) (+) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (-) (+) (-) (+) (-) (+) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (-) (+) (-) (+) (-)...

  • Page 245

    Issue 5.0 2016-05-06 sd-23 figure sd-23: napi154 pdm distribution pwb (sheet 2 of 2) 1.0 c79 1.0 c77 1.0 c69 1.0 c67 1.0 c59 1.0 c57 0.1 c98 0.1 c96 0.1 c88 0.1 c86 (-) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (+) (-) (+) 1.0 c81 1.0 c83 1.0 c73 1.0 c75 1.0 c63 1.0 c65 1.0 c61 1.0 c55 1.0 c51...

  • Page 246

    Issue 5.0 2016-05-06 sd-24 figure sd-24: nap39a rf power module and napa34a modulator/power amplifier pwb (sheet 1 of 2) (-) 1 (+) 2 (-) (+) (-) (+) b+ (-) (+) 1.0 c50 475 r10 0.1 c31 +5v 475 r4 1.0 c9 0.1 c14 0.1 c93 k 1 in +5v s s s s t4 t3 l15 t2 t1 to (-) (+) (+) (-) 1.0 c136 0.1 c32 475 r11 475...

  • Page 247

    Issue 5.0 2016-05-06 sd-25 figure sd-25: nap39a rf power module and napa34a modulator/power amplifier pwb (sheet 2 of 2) 0.1 c89 +5v 0.1 c83 rxd t0 t1 int0 adc1 adc2 adc4 adc0 ain0 ain1 reset sck pc.5 pb.0 pb.1 xtal1 xtal2 +5v 0.1 c66 r1 * r76 121 2w 20 r107 +5v 0.1 c97 0.1 c109 1.0 c67 0.1 c80 txd ...

  • Page 248

    Nx25/nx15 troubleshooting manual mechanical drawings issue 5.0 2016-05-06 page 6-1 section 6: mechanical drawings this section contains mechanical drawings for assemblies of the transmitter. Dimensional drawings may be included. Refer to table 6.1 on page 6-2 for an itemized list. Assembly detail dr...

  • Page 249

    Nx25/nx15 troubleshooting manual mechanical drawings page 6-2 issue 5.0 2016-05-06 3. If necessary, refer to the referenced figure (e.G., md-16 and md-17 ) in the mechanical drawings at the end of this section and locate the next, lower-level assembly. Then, repeat this procedure until the desired p...

  • Page 250

    Issue 5.0 2016-05-06 md-1 figure md-1: nx15/nx25 transmitter (front view).

  • Page 251

    Issue 5.0 2016-05-06 md-2 figure md-2: nx15/nx25 transmitter (rear view).

  • Page 252

    Issue 5.0 2016-05-06 md-3 figure md-3: nah60a rf combiner back plane a1 power module interface pwb a2 & a3 transformer assemblies.

  • Page 253

    Issue 5.0 2016-05-06 md-4 figure md-4: napi95a/02 power module interface pwb cr1 cr5 cr6 cr2 e3 ds3 r3 ds1 e4 87 88 1 2 1 j1 r1 87 88 1 2 1 j2 + c5 1 j1 1 e10 e9 e2 + c3 + c1 f3 f 1 1 j9 e1 j6 1 1 j7 87 88 1 2 1 j3 87 88 1 2 1 j4 rear front m2070123 v1 b+ b+ b+ caution! Ser. Napi95 b+ power module i...

  • Page 254

    Issue 5.0 2016-05-06 md-5 figure md-5: nae96c/01 control/exciter panel.

  • Page 255

    Issue 5.0 2016-05-06 md-6 figure md-6: napc160b/01 control/interface pwb r55 r352 r106 cr 21 l9 r185 r283 r277 r271 cr1 cr2 r6 c7 c6 c5 c1 7 c15 c25 c21 c41 c38 c3 9 c36 c5 6 c5 5 cr 13 r6 1 c77 c7 4 c84 c8 5 c105 c 269 c272 cr 7 9 r 111 r100 cr 20 l10 cr2 3 cr 22 c 129 c14 2 r 171 c152 r 184 c155 r...

  • Page 256

    Issue 5.0 2016-05-06 md-7 figure md-7: nape78a/01 digital am exciter pwb c162 c3 c1 c31 c50 c48 c67 c92 c102 c109 c 113 c123 c129 c 133 c135 c138 c142 c14 4 c148 c141 c1 43 c1 64 c163 c 152 c158 c 156 c155 c151 c150 c 177 c179 c 176 c 174 c 172 c173 c193 c194 c197 c201 c2 14 c4 c2 r17 r12 c1 3 r24 r...

  • Page 257

    Issue 5.0 2016-05-06 md-8 figure md-8: napi106 remote interface pwb.

  • Page 258

    Issue 5.0 2016-05-06 md-9 figure md-9: napx46 gps sync pwb (optional) c22 r11 c1 r1 r4 tp2 c19 r5 r8 c21 c20 c26 r13 r16 r1 8 c14 r2 c18 tp4 c2 5 r12 c10 c7 c8 c5 c4 c15 r7 c2 c17 r3 c43 r17 r14 q2 c39 c36 c37 c38 c33 c34 c28 tp10 c31 r27 c45 c30 l1 c32 r10 r15 r24 ds4 r23 ds3 c6 c9 c12 c11 q1 c13 c...

  • Page 259

    Issue 5.0 2016-05-06 md-10 figure md-10: napi151 usb audio interface pwb (optional) c4 r3 r10 r9 c8 c6 c2 r11 l1 c14 c12 c7 ds1 c3 c1 c5 r2 r1 r1 2 c11 t2 c13 c10 j1 t1 r7 r5 y1 u2 r6 c9 u1 r4 r8 1 j2 b 1 2 a m2060292 v1 +5v ser. Napi151 usb audio interface.

  • Page 260

    Issue 5.0 2016-05-06 md-11 figure md-11: napi152a rack interface pwb r5 r2 0 2 c173 c184 c1 8 2 r2 4 2 c1 8 5 r1 9 0 r2 1 0 c1 9 1 c1 1 c1 8 c1 2 c1 4 4 r1 7 r1 4 r2 8 c4 1 r4 4 r4 5 r193 c4 8 r2 0 4 c6 0 r6 2 c6 2 r6 5 r8 0 c6 7 r8 8 r9 0 c7 7 tp27 r9 2 r94 c8 6 c8 9 r 101 c8 5 r1 0 2 r9 8 r1 1 4 c...

  • Page 261

    Issue 5.0 2016-05-06 md-12 figure md-12: napi98 rf drive distribution pwb.

  • Page 262

    Issue 5.0 2016-05-06 md-13 figure md-13: napi154 pdm drive distribution pwb c16 c14 c1 3 r6 8 r6 4 c1 9 r6 2 r6 7 r7 7 r7 6 c1 5 r51 l8 c8 r49 c7 r29 l5 r46 r44 r27 r42 r26 l2 r40 r25 c1 r38 c34 c30 c32 c28 c27 c38 c36 c35 c46 c43 c44 c54 c51 c52 c62 c58 c60 c59 c55 c56 c70 c68 c67 c78 c74 c72 c71 c...

  • Page 263

    Issue 5.0 2016-05-06 md-14 figure md-14: nax243a b+ distribution assembly.

  • Page 264

    Issue 5.0 2016-05-06 md-15 figure md-15: nap39a rf power module q7 q8 q9 q10 a1 modulator / power amplifier pwb cutaway from a1 to show location / orientation of fets q7 to q10

  • Page 265

    Issue 5.0 2016-05-06 md-16 figure md-16: napa34a modulator/power amplifier pwb (front view).

  • Page 266

    Issue 5.0 2016-05-06 md-17 figure md-16: napa34a modulator/power amplifier pwb (rear view) c d e cr 21 k a cr 20 k a gd s q13 gd s q12 cr 1 9 k a 87 1 f a 3 4 1 2 4 3 1 2 4 3 1 2 4 3 1 2 7 6 12 1 l10 6 12 7 1 l11 gd s q11 12 1 6 7 l12 b 1 6 7 12 l13 1 7 12 6 l14 d s g s s s d s d g s d s s ca ble 3 ...

  • Page 267

    Issue 5.0 2016-05-06 md-18 figure md-18: fan tray assembly (207-8133).

  • Page 268

    Issue 5.0 2016-05-06 md-19 figure md-19: voltage probe (207-6111).

  • Page 269

    Issue 5.0 2016-05-06 md-20 figure md-20: current probe (207-6213-04).

  • Page 270

    Issue 5.0 2016-05-06 md-21 figure md-21: nafp106b/02 directional coupler a1 detail.

  • Page 271

    Nx25/nx15 troubleshooting manual list of terms issue 5.0 2016-05-06 page 7-1 section 7: list of terms this section defines some of the terms that are used in nautel documentation. Adc. Analog to digital converter. Aes-ebu. Audio engineering society/european broadcasting union (aes/ebu) is the name o...

  • Page 272

    Nx25/nx15 troubleshooting manual list of terms page 7-2 issue 5.0 2016-05-06 ne iboc. Nautel’s in-band-on-channel signal generator. See iboc. Required for nx series iboc installations. Pdm. Pulse duration modulation. Preset. A setting that controls power level, active exciter, and power scheduler st...

  • Page 274

    Nx25/nx15 troubleshooting manual document: nhb-nx15-nx25-trb issue: 5.0 2016-05-06 nautel limited 10089 peggy’s cove road hackett’s cove, ns canada b3z 3j4 toll free: +1.877.6nautel (662.8835) (canada & usa only) or phone: +1.902.823.3900 or fax: +1.902.823.3183 nautel inc. 201 target industrial cir...