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  4. NPX138
  5. Installation And Operation Manual

Northern Airborne Technology NPX138 Installation And Operation Manual

Manual is about: Panel mount radio

Summary of NPX138

  • Page 1

    Confidential and proprietary to northern airborne technology ltd. Sm41 npx138 panel mount radio installation and operation manual rev 4.00 november 10, 2003 northern airborne technology ltd. 1925 kirschner road kelowna bc, canada v1y 4n7 telephone (250) 763-2232 facsimile (250) 762-3374 copyright 20...

  • Page 2: Important Information

    Sm41 rev. 4.00 npx138 panel mount radio manual nov 10, 2003 page ii eng-form: 820-0109.Dot confidential and proprietary to northern airborne technology ltd . Important information for avionics installation facilities the npx138 is supplied without tso certification, as no such standard presently exi...

  • Page 3: Performed At Factory

    Sm41 rev. 4.00 npx138 panel mount radio manual nov 10, 2003 page iii eng-form: 820-0109.Dot confidential and proprietary to northern airborne technology ltd . Periodically nat will release manual amendments. In order to maintain the most accurate and up to date manual these amendments should be carr...

  • Page 4

    Sm41 rev. 4.00 npx138 panel mount radio manual nov 10, 2003 page v eng-form: 820-0109.Dot confidential and proprietary to northern airborne technology ltd . 3.4.2 rx/tx status indicator 3-3 3.4.3 scan/guard tx switch 3-4 3.4.4 guard controls 3-4 3.5 general controls — normal operating mode 3-5 3.5.1...

  • Page 5: Install_Ops

    Install_ops manual amendment manual: sm41_npx138 amendment no.: 6 document no. Sm41\install_ops\809-0006 amendment date: mar 30, 2010 amendment no. 6 mar 30, 2010 page 1 eng-form: 809-0109.Dot confidential and proprietary to northern airborne technology ltd. The purpose of this amendment is to add t...

  • Page 6: Install_Ops

    Install_ops manual amendment manual: sm41 (npx) amendment #: 5 document # sm41\install_ops\809-0005 amendment date: jan 14, 2008 amendment # 5 jan 14, 2008 page 1 eng-form: 809-0109.Dot confidential and proprietary to northern airborne technology ltd. The purpose of this amendment is to update secti...

  • Page 7: Install_Ops

    Install_ops manual amendment manual: sm41 (npx) amendment #: 4 document # sm41\install_ops\809-0004 amendment date: jun 10, 2005 amendment # 4 jun 10, 2005 page 1 eng-form: 809-0109.Dot confidential and proprietary to northern airborne technology ltd. The purpose of this amendment is to add informat...

  • Page 8: Install_Ops

    Install_ops manual amendment manual: sm41 npx138 amendment #: 3 document # sm41\install_ops\809-0003 amendment date: nov 22, 2004 amendment # 3 nov 22, 2004 page 1 eng-form: 809-0107.Dot proprietary and confidential to northern airborne technology ltd. The purpose of this amendment is to amend the c...

  • Page 9: Install_Ops

    Install_ops manual amendment manual: sm41 npx138 amendment #: 2 document # sm41\install_ops\809-0002 amendment date: aug 19, 2004 amendment #2 aug 19, 2004 page 1 eng-form: 809-0107.Dot proprietary and confidential to northern airborne technology ltd. The purpose of this amendment is to update the f...

  • Page 10: Manual Amendment

    Manual amendment manual: sm41 npx138 amendment #: 1 document # sm41\install_ops\809-0001 amendment date: apr 19, 2004 amendment #1 apr 19, 2004 page 1 eng-form: 809-0107.Dot proprietary and confidential to northern airborne technology ltd. The purpose of this amendment is to include the new revision...

  • Page 11

    Sm41 rev. 4.00 npx138 panel mount radio manual nov 10, 2003 page iv eng-form: 820-0109.Dot confidential and proprietary to northern airborne technology ltd . Table of contents section title page 1.0 description 1.1 introduction 1-1 1.2 purpose of equipment 1-1 1.3 features 1-1 1.4 specifications 1-2...

  • Page 12

    Sm41 rev. 4.00 npx138 panel mount radio manual nov 10, 2003 page v eng-form: 820-0109.Dot confidential and proprietary to northern airborne technology ltd . 3.4.2 rx/tx status indicator 3-3 3.4.3 scan/guard tx switch 3-4 3.4.4 guard controls 3-4 3.5 general controls — normal operating mode 3-5 3.5.1...

  • Page 13

    Sm41 rev. 4.00 npx138 panel mount radio manual section 1.0 description 1.1 introduction this manual contains description, installation, operation and maintenance information on the npx138 series of panel mount fm transceivers, serial numbers 1238 and subsequent. The npx138 incorporates nat’s proven ...

  • Page 14

    Npx138 panel mount radio manual sm41 rev. 4.00 1.4 specifications 1.4.1 electrical specifications input power 28 vdc nominal current consumption 0.5 a receive/2.0 a transmit (typical) 0.8 a receive/3.0 a transmit (max.) panel lighting 28 vdc, 14 vdc or 5 vdc dependent on model. Sidetone output 25 mw...

  • Page 15

    Sm41 rev. 4.00 npx138 panel mount radio manual 1.4.3 transmitter rf power output 1 w/10 w selectable rf input/output impedance 50 Ω nominal rated system deviation npx138 (all models) ± 5.0 khz max, limited npx138n (all models) wideband ± 5.0 khz max, limited narrowband ± 2.5 khz max, limited microph...

  • Page 16

    Npx138 panel mount radio manual sm41 rev. 4.00 1.4.5 environmental specifications operating temperature -30 c to +60 c altitude 25,000 feet humidity 95% vibration do-160c, cat. M 1.5 unit nomenclature variants of the npx138 series radios are identified as follows: npx138 n - 000 narrowband capabilit...

  • Page 17

    Sm41 rev. 4.00 npx138 panel mount radio manual 1.5.3 special options the digit in the second position of the unit suffix indicates any special options installed. Npx138 n - 000 0 = no special options installed 5 = usfs standardguard 6 = customguard - consult factory for details 7 = synthesized guard...

  • Page 18

    Sm41 rev. 4.00 npx138 panel mount radio manual section 2.0 installation 2.1 introduction information in this section consists of: unpacking and inspection procedures, installation procedures, post-installation checks, and installation drawings. 2.2 unpacking and inspection unpack the equipment caref...

  • Page 19

    Npx138 panel mount radio manual sm41 rev. 4.00 2.3.3 notes the case of the npx138 must be electrically grounded for maximum resistance to low frequency interference. A pin on the connector (chassis ground) is provided and must be connected by a short wire to a clean ground, not jumpered to the power...

  • Page 20

    Sm41 rev. 4.00 npx138 panel mount radio manual rf cables must be neatly terminated (solder or crimp), and tested for shorts prior to system check-out (not while connected to the radio or antenna). Keep cable bends to a minimum at the antenna. Avoid sharp bends in the coax cables (minimum 3" radius) ...

  • Page 21

    Npx138 panel mount radio manual sm41 rev. 4.00 2.3.6 mechanical mounting installation of the transceiver should be in accordance with the original aircraft manufacturer’s instructions for continued airworthiness or ac 43.13-1b change 1, chapter 7, sections 2 to 7 and ac 43.13-2a, chapter 2. Pr 35 dz...

  • Page 22

    Sm41 rev. 4.00 npx138 panel mount radio manual nov 10, 2003 page 2-5 eng-form: 805-0104.Dot amendment no. 3 mar 30, 2010 proprietary and confidential to northern airborne technology ltd. 2.3.7.2 power on checks a) install the npx138 and power up the ship’s systems. Turn on the radio. Check the opera...

  • Page 23

    Confidential and proprietary to nat.

  • Page 26: Installation Approval

    Installation approval test procedure nat part #: npx138 description: panel mount radio document #: npx138\634-0 rev: 1.10 rev. 1.10 apr 19, 2004 page 1 of 7 eng-form: 634-0100.Dot confidential and proprietary to northern airborne technology ltd. 1. Post installation emi test the purpose of this test...

  • Page 27

    Npx138 installation approval test procedure rev. 1.10 apr 19, 2004 page 2 of 7 e ng-form: 634-0100.Dot confidential and proprietary to northern airborne technology ltd. 4. Results if the installed system passes all of the applicable emi tests, then no further action is required. If interference is o...

  • Page 28

    Npx138 installation approval test procedure rev. 1.10 apr 19, 2004 page 3 of 7 e ng-form: 634-0100.Dot confidential and proprietary to northern airborne technology ltd. B. Determine if the image frequency for the vhf comm falls within the range of the npx138 unit. If so, select a set of frequencies ...

  • Page 29

    Npx138 installation approval test procedure rev. 1.10 apr 19, 2004 page 4 of 7 e ng-form: 634-0100.Dot confidential and proprietary to northern airborne technology ltd. C. Determine if the image frequency for the vor/ils nav falls within the range of the npx138 unit. If so, select two sets of freque...

  • Page 30

    Npx138 installation approval test procedure rev. 1.10 apr 19, 2004 page 5 of 7 e ng-form: 634-0100.Dot confidential and proprietary to northern airborne technology ltd. D. Modulate the npx138 transmitter on the following frequencies for at least 20 seconds. Look for any movement of flags or needles ...

  • Page 31

    Npx138 installation approval test procedure rev. 1.10 apr 19, 2004 page 6 of 7 e ng-form: 634-0100.Dot confidential and proprietary to northern airborne technology ltd. F. Perform a coupled ils approach to the aircraft's certified limits. Modulate the npx138 transmitter on the above frequencies for ...

  • Page 32

    Npx138 installation approval test procedure rev. 1.10 apr 19, 2004 page 7 of 7 e ng-form: 634-0100.Dot confidential and proprietary to northern airborne technology ltd. Step system pass fail notes notes: end of installation approval test procedure.

  • Page 35

    Sm41 rev. 4.00 npx138 panel mount radio manual section 3.0 operation 3.1 introduction in addition to the general functions that are available on other fm radios, the npx has several features that extend its capability and make it easier to use. These features include alphanumeric channel labeling, b...

  • Page 36

    Npx138 panel mount radio manual sm41 rev. 4.00 3.2.2 initial operating display if you decline ‘help’ (by using the next switch as directed), the radio will display a summary of the installed functions and current settings (this feature can be disabled at installation for faster start-up). The radio ...

  • Page 37

    Sm41 rev. 4.00 npx138 panel mount radio manual 3.4 function controls the controls located to the right of the display are ‘function’ controls. These controls access the radio functions most often used. Access to all other functions is via the status lines (see section 3.8 for further details on ‘sta...

  • Page 38

    Npx138 panel mount radio manual sm41 rev. 4.00 3.4.3 scan/guard tx switch when this switch is in the scan position, the radio will begin scanning. See section 3.10 for further details on scanning. When this switch is in the gd tx position, all radio transmissions will be on the guard transmit freque...

  • Page 39

    Sm41 rev. 4.00 npx138 panel mount radio manual 3.5 general controls — normal operating mode channel switch brightness switch edit switch squelch pushbutton the general controls are those labeled in the above diagram and affect the over-all operation of the radio. The position of the edit switch dete...

  • Page 40

    Npx138 panel mount radio manual sm41 rev. 4.00 3.5.3 squelch pushbutton pressing the squelch test button over-rides all squelch logic, and lets the radio’s unsquelched audio receive signal pass to the aircraft’s audio system. The squelch test function is useful for monitoring activity on the radio w...

  • Page 41

    Sm41 rev. 4.00 npx138 panel mount radio manual 3.6.2 rx display line the rx line includes the channel number, the receive frequency and the receive tone. A typical rx line might look like this: 01 156.8750r 91 channel rx freq. Rx tone the radio will receive incoming fm signals that have a carrier fr...

  • Page 42

    Npx138 panel mount radio manual sm41 rev. 4.00 3.7 channel editing editing is the general term for changing any information stored in the npx radio. There are two basic types of editing, all selectable from the front panel of the radio. These are ‘channel editing’ (ch) and ‘status editing’ (st). The...

  • Page 43

    Sm41 rev. 4.00 npx138 panel mount radio manual 3.7.1 select switch the select switch steps the data entry up or down (+/-). The radio only permits a valid choice for each position selected for editing. This is to aid operators in reducing entry mistakes, particularly when busy with other flight proc...

  • Page 44

    Npx138 panel mount radio manual sm41 rev. 4.00 sometimes, more than one character will flash. This is because the only valid choices involve multiple characters, such as the fractional khz entry for a channel frequency. This is also true for tone code entries. The select switch will slew through the...

  • Page 45

    Sm41 rev. 4.00 npx138 panel mount radio manual 3.8.1 next and select switch use toggling select will step to the previous/next available setting for the current function. To advance to the next function, toggle next. Use the select switch to again choose the desired setting, and continue in this man...

  • Page 46

    Npx138 panel mount radio manual sm41 rev. 4.00 • scan there are three scanning modes available for selection: list, priority, and list+pri. See section 3.10 for further details on scanning. • p1 this is the priority channel used in priority and list+priority scanning. It can be set to any valid chan...

  • Page 47

    Sm41 rev. 4.00 npx138 panel mount radio manual 3.9.2 tone display and selection the npx radio displays the tones for the selected channel on the last three positions (far right hand side) of the rx and tx lines. Use the channel edit mode to select and store the appropriate tones for each channel. Th...

  • Page 48

    Npx138 panel mount radio manual sm41 rev. 4.00 table 1 below shows the four different display options for each of the available tones. Tone frequency (hz) 1-38 wcode mcode 67.0 1 01 xz 71.9 2 02 xa 74.4 3 03 wa 77.0 4 04 xb 79.7 5 05 sp 82.5 6 06 yz 85.4 7 07 ya 88.5 8 08 yb 91.5 9 11 zz 94.8 10 12 ...

  • Page 49

    Sm41 rev. 4.00 npx138 panel mount radio manual 3.9.3 turning tones on and off the npx radio also has the capability to have tones enabled or disabled globally. By editing the tones status line, the operator can set all the tones on, off or to tx only. Tones=on enables all the tones programmed into t...

  • Page 50

    Npx138 panel mount radio manual sm41 rev. 4.00 3.10.2 scan operation activate scanning by moving the scan/norm/guard tx toggle switch to the scan position. The ‘home’ channel is the channel that the radio was on before scanning was activated. The radio scans the home channel and all channels on the ...

  • Page 51

    Sm41 rev. 4.00 npx138 panel mount radio manual • list scanning the second last space on each channel id line indicates whether that channel is in the scan list or not. If it displays a dash ‘-’, the channel is not in the list. If the channel is in the list it displays the scan flag (sc). Use the cha...

  • Page 52

    Npx138 panel mount radio manual sm41 rev. 4.00 3.11 wideband/narrowband operation the npx138n is capable of operating in either a wideband mode (± 5.0 khz rated system deviation) or narrowband mode (± 2.5 khz rated system deviation). 3.11.1 editing wideband/narrowband flag to edit the wideband/narro...

  • Page 53

    Sm41 rev. 4.00 npx138 panel mount radio manual e) depending on the style of radio and the options selected, the information on this and subsequent screens will vary. Don't worry if all the features listed in the following table are not displayed. F) using the normal editing procedure (select/next), ...