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- Installation And Operation Manual
Radyne DMD20 LBST Installation And Operation Manual
Summary of DMD20 LBST
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Dmd20/dmd20 lbst universal satellite modem installation and operation manual tm103 revision 2.5 radyne corp. • 3138 e. Elwood st. • phoenix, az 85034 • (602) 437-9620 • fax: (602) 437-4811 • www.Radn.Com.
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Dmd20/dmd20 lbst universal satellite modem warranty policy tm103 – rev. 2.5 iii warranty policy wp radyne corp. (seller) warrants the items manufactured and sold by radyne corp. To be free of defects in material and workmanship for a period of two (2) years from date of shipment radyne corp.’s oblig...
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Warranty policy dmd20/dmd20 lbst universal satellite modem iv tm103 - rev. 2.5 in no event shall radyne corp. Be liable for incidental, consequential, special or resulting loss or damage of any kind howsoever caused. Radyne corp.’s liability for damages shall not exceed the payment, if any, received...
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Dmd20/dmd20 lbst universal satellite modem preface tm103 – rev. 2.5 v preface p this manual provides installation and operation information for the radyne dmd20 and dmd20 lbst universal satellite modem. This is a technical document intended for use by engineers, technicians, and operators responsibl...
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Preface dmd20/dmd20 lbst universal satellite modem vi tm103 - rev. 2.5 trademarks product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged. Copyright © 2005, radyne corp. This manual is proprietary to radyne corp. And...
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Dmd20/dmd20 lbst universal satellite modem table of contents tm103 – rev. 2.5 vii table of contents toc section 1 - introduction 1.0 overview ________________________________________________________ 1-1 1.1 dmd20 configurations _____________________________________________ 1-2 1.1.1 features/options...
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Table of contents dmd20/dmd20 lbst universal satellite modem viii tm103 - rev. 2.5 3.1.5 monitor & control (m&c) subsystem _________________________________ 3-5 3.1.5.1 remote/terminal port ___________________________________________ 3-6 3.1.5.2 async port____________________________________________...
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Dmd20/dmd20 lbst universal satellite modem table of contents tm103 – rev. 2.5 ix 3.11.3 pcm-31 _____________________________________________________ 3-17 3.11.4 pcm-31c ____________________________________________________ 3-17 3.11.5 t1-d4/t1-d4-s________________________________________________ 3-17...
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Table of contents dmd20/dmd20 lbst universal satellite modem x tm103 - rev. 2.5 4.3.3 demodulator menu options and parameters__________________________ 4-11 4.3.4 interface menu options and parameters _____________________________ 4-15 4.3.5 aupc menu options and parameters _________________________...
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Dmd20/dmd20 lbst universal satellite modem table of contents tm103 – rev. 2.5 xi 5.2.2 dc power input/switch ___________________________________________ 5-3 5.3 dmd20 chassis connections (standard) _______________________________ 5-3 5.3.1 ext ref (j10)_______________________________________________...
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Table of contents dmd20/dmd20 lbst universal satellite modem xii tm103 - rev. 2.5 5.6 ethernet data interface (optional) ___________________________________ 5-17 5.7 high-speed serial interface (hssi) (optional) __________________________ 5-17 5.7.1 hssi (j6) ________________________________________...
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Dmd20/dmd20 lbst universal satellite modem table of contents tm103 – rev. 2.5 xiii 7.4 monitor and control________________________________________________ 7-2 7.5 dmd20 drop and insert (optional) ____________________________________ 7-2 7.6 terrestrial interfaces ____________________________________...
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Table of contents dmd20/dmd20 lbst universal satellite modem xiv tm103 - rev. 2.5 a.0.4 dc input prime power ____________________________________________ a-1 a.0.5 asi/rs-422 parallel______________________________________________ a-1 a.0.6 asi/lvds parallel __________________________________________...
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Dmd20/dmd20 lbst universal satellite modem table of contents tm103 – rev. 2.5 xv.
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Dmd20/dmd20 lbst universal satellite modem introduction tm103 – rev. 2.5 1-1 introduction 1 this chapter provides an overview of the dmd20/dmd20 lbst universal satellite modem. The dmd20 will be referred to in this manual as “the standard unit”; and the dmd20 lbst, referred to in this manual as the ...
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Introduction dmd20/dmd20 lbst universal satellite modem 1-2 tm103 - rev. 2.5 a full range of industry standard interfaces is available for the dmd20. Interface types are selectable from v.35, rs-232, rs-422/-530, itu g.703, hssi, asi, and dvb/m2p. The dmd20 lbst (figure 1-2) offers additional featur...
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Dmd20/dmd20 lbst universal satellite modem introduction tm103 – rev. 2.5 1-3 1.1.3 hardware options hardware options (refer to appendix a) are purchased parts that can be installed into the unit at the customer’s site. A screwdriver is normally the only tool required. Please contact the radyne corp....
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Introduction dmd20/dmd20 lbst universal satellite modem 1-4 tm103 - rev. 2.5.
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Dmd20/dmd20 lbst universal satellite modem installation tm103 – rev. 2.5 2-1 installation 2 this section provides unpacking and installation instructions, and a description of external connections and backward alarm information. 2.0 installation requirements the dmd20 modem is designed to be install...
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Installation dmd20/dmd20 lbst universal satellite modem 2-2 tm103 - rev. 2.5 2.1 unpacking the dmd20 universal satellite modem was carefully packaged to avoid damage and should arrive complete with the following items for proper installation: dmd20 modem unit power cord, with applicable ac connector...
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Dmd20/dmd20 lbst universal satellite modem installation tm103 – rev. 2.5 2-3 2.4 dmd20 initial configuration check the dmd20 is shipped from the factory with preset factory defaults. Upon initial power-up, a user check should be performed to verify the shipped modem configuration. Refer to section 4...
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Installation dmd20/dmd20 lbst universal satellite modem 2-4 tm103 - rev. 2.5 standard dmd20 factory configuration settings modulator: data rate: 2.048 mbps mode: closed network satellite framing: none scrambler: v.35 (iess) drop and insert: disabled inner fec: 1/2 rate viterbi outer fec: disabled mo...
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Dmd20/dmd20 lbst universal satellite modem installation tm103 – rev. 2.5 2-5 turn on the unit by placing the rear panel switch (located above the power entry connector) to the on position. Upon initial and subsequent power-ups, the dmd20 microprocessor will test itself and several of its components ...
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Installation dmd20/dmd20 lbst universal satellite modem 2-6 tm103 - rev. 2.5.
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-1 theory of operation 3 3.0 dmd20 hardware the dmd20 is based on a two printed circuit card (minimum configuration) design with additional optioned printed circuit cards available for additional features. The minimum c...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-2 tm103 - rev. 2.5 in the complex downconverter, the signal for demodulation is amplified and sent through a variable wideband attenuator for agc. The gain-controlled signal is then passed through a complex downconverter to a low if. F...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-3 the baseband printed circuit card also contains the monitor and control (m&c) circuitry responsible for: programmable part setup and initialization continuous control and adjustment of some functions calibration moni...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-4 tm103 - rev. 2.5 figure 3-4. Dmd20 universal satellite modem functional block diagram 3.1.1 front panel the front panel includes a 2 x 16 backlit lcd display, indicator leds, and a numeric keypad (refer to section 4.1). 3.1.2 baseban...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-5 unaltered. In idr, ibs, and d&i modes, the framer adds the appropriate framing and esc as defined in iess-308 and 309. In d&i mode, the framer acquires the terrestrial framing structure, e1 or t1, and synchronizes th...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-6 tm103 - rev. 2.5 3.1.5.1 remote/terminal port this port functions as the modem remote port or terminal port. This port supports an asynchronous control protocol as described in section 4. It may be configured to support either rs-232...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-7 form-c contacts: the uim provides three form-c relays under processor control that appear at j11. Mod fault: de-energized when any transmit side fault is detected. Demod fault: de-energized when any receive side faul...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-8 tm103 - rev. 2.5 figure 3-6. Loopback functional block diagram.
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-9 figure 3-7. Loopback functional block diagram figure 3-8. Loopback functional block diagram.
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-10 tm103 - rev. 2.5 3.6 dmd20 clocking options the following paragraphs define the types of clocking options available to the user at the front panel of the dmd20. 3.6.1 clock selection as shown in figure 3-9, both the tx clock and the...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-11 3.6.2 scte: serial clock transmit external this clock is the transmit terrestrial clock associated with the interface. With the g.703 interface selected, scte is the clock that is recovered from the g.703 data strea...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-12 tm103 - rev. 2.5 external reference port input is specified at 0 to +6 dbm. 3.7 transmit timing as shown in figure 3-7, transmit terrestrial data enters the modem and is clocked into a dejitter fifo. Data is clocked out of the fifo ...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-13 3.8.1 ethernet data interface (optional) if the ethernet data interface is selected, then the buffer clock will default to rxsat and the buffer clock polarity will default to normal. In certain circumstances, it may...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-14 tm103 - rev. 2.5 (receive) processing. In both configurations, the terrestrial trunk is providing the timing for the satellite transmission and for the terrestrial receive. Figure 3-10. Looped modems figure 3-11. Looped modems with ...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-15 3.10.1 drop only when drop is enabled and insert is disabled, the dmd20 performs a drop-only function. Framed e1 or t1 data is input via the send data in port, the selected timeslots are dropped into the ibs frame s...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-16 tm103 - rev. 2.5 figure 3-14. Insert only with internal frame source 3.11 mode selection the dmd20 d&i can be easily configured to support several commonly used terrestrial data formats. For e1 data, the user can choose between pcm-...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-17 3.11.3 pcm-31 the pcm-31 mode of operation supports an e1 interface with no multiframe alignment (mfas) or channel associated signaling (cas). The user may independently program n timeslots to drop and n timeslots t...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-18 tm103 - rev. 2.5 3.13 drop and insert mapping the following displays under interface d&i setup (both tx and rx), are editing displays only: satch ts enter to edit any changes made in these displays are made on the screen, but are no...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-19 example : for a modem w/ drop & insert enabled at a data rate of 256 (with timeslots assigned 1 - 1, 2 - 2, etc.). At a data rate of 256, the modem will allow 4 channels to assign timeslots. Under the tx menu, assig...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-20 tm103 - rev. 2.5 to view the current timeslot assignment: 1. If there is a question of the channels not being entered properly, the mapping menu may be used to see how the channels/timeslots are configured in the modem. 2. Use and t...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-21 3.14.1 reed-solomon operation in the dmd20 when the reed-solomon codec is enabled, data is fed to the r-s encoding section of the dmd20 where it is scrambled, formed into blocks, r-s encoded, and interleaved. Unique...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-22 tm103 - rev. 2.5 table 3-1. Reed-solomon codes type of service data rate (kbps) r-s code (n, k, t) 1 bandwidth expansion [ (n/k) -1 ] interleaving depth maximum 2 r-s codec delay (ms) small idr (with 16/15 o/h) 64 128 256 384 512 76...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-23 the ibs async framer data mode provides a service channel between the two sites of a link permitting the modem processors to send messages and get responses over this channel. Aupc can be set to operate on either or...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-24 tm103 - rev. 2.5 3.16 asynchronous overhead operation (framing/multiplexer capability) the asynchronous framing/multiplexer is capable of multiplexing a relatively low-speed overhead channel onto the terrestrial data stream resultin...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-25 2048 1024 832 19200 896 19200 960 19200 1024 19200 1088 19200 1152 19200 1216 19200 1280 19200 1344 19200 1408 19200 1472 19200 1536 19200 1600 19200 1664 19200 1728 19200 1792 19200 1856 19200 1920 19200 1984 19200...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-26 tm103 - rev. 2.5 the ratio of the through terrestrial data channel rate to the aggregate rate is 15/16. The standard transmit and receive channels of the es to es data channel in standard ibs mode are raw channels operating at the s...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-27 3.19.1 to disable the esc backward alarms if the esc alarms port will not be used and the backward alarm indications are to be disabled, uou must connect pins 10, 11, 22 and 23 to pin 1 (gnd) on esc alarms port. 3.2...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-28 tm103 - rev. 2.5 the control ratio of the receiving units must match the control ratio of the transmitting unit. 3.20.2 aggregate data rate the aggregate data rate equals the following: user data rate + in-band rate + synchronizing ...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-29 user data rate in-band rate control ratio aggregate data rate overhead ratio 512,000 19,200 1/7 533,974 1.043 1,024,000 19,200 1/7 1,045,974 1.021 2,048,000 19,200 1/7 2,069,951 1.011 3,072,000 19,200 1/7 3,093,943 ...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-30 tm103 - rev. 2.5 actual ratio = (2,500+ 10)/2,500= 1.004 3.21 scc overhead channel setup 1. Set the framing mode (located under mod and demod data menus) to scc. After doing this, two new menus will appear to the right of the framin...
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Dmd20/dmd20 lbst universal satellite modem theory of operation tm103 – rev. 2.5 3-31 3.22 locating the dmd2050 id code operational procedure this section describes the procedure to locate the unique id code on the dmd2050 modem. 1. Verify that the unit is powered up. 2. Use the arrow keys on the fro...
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Theory of operation dmd20/dmd20 lbst universal satellite modem 3-32 tm103 - rev. 2.5.
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-1 user interfaces 4 4.0 user interfaces there are three user interfaces available for the dmd20. These are: • front panel interface • remote port interface • terminal interface 4.1 front panel user interface the front pane...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-2 tm103 - rev. 2.5 4.1.1 lcd front panel display the front panel display is a 2 line by 16-character lcd display. The display is lighted and the brightness can be set to increase when the front panel is currently in use. The lcd display au...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-3 4.1.4 front panel led indicators eight leds on the dmd20 front panel (refer to table 4-3) indicate the status of the dmd20’s operation. The led colors maintain a consistent meaning. Green signifies that the indication is...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-4 tm103 - rev. 2.5 figure 4-2. Entering new parameters following a valid input, the dmd20 will place the new setting into the nonvolatile eeprom making it available immediately and available the next time the unit is powered-up. 4.3 front ...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-5 4.3.2 modulator menu options and parameters network spec {idr, ibs, drop & insert, closed net, dvb sat} used with idr, or ibs interface only. The network spec command sets a number of parameters within the modem to meet ...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-6 tm103 - rev. 2.5 dvb: data rates: all rates framing type: dvb scrambler type: dvb spectrum mask: dvb 0.25, 0.35 closed net: all possible combinations allowed, however, dvb settings requires the dvb network spec. Activates the aupc menu. ...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-7 spectrum {normal, inverted} allows the user to invert the direction of rotation for psk modulation. Normal meets the iess specification. Lbst: spectral inversion may be required if the buc lo is higher in frequency than ...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-8 tm103 - rev. 2.5 scrambler ctrl {enabled, disable} allows the user to enable or disable scrambler operation. Sat framing {1/15 (ibs), 1/15 (async), 96 kbps (idr), dvb, edmac, efaupc, scc, none} used with idr, ibs, or asynchronous interfa...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-9 aupc max lvl {variable through power range} allows the user to set the maximum transmit power. The maximum transmit power is the highest power setting that will be used when the remote modem commands an increase of the t...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-10 tm103 - rev. 2.5 allows the user to select the time delay after power-up before the tx carrier may be enabled. This allows time for the buc to stabilize..
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-11 4.3.3 demodulator menu options and parameters network spec {idr, ibs, drop & insert, closed net, dvb sat} used with idr, or ibs interface only. The mode command sets a number of parameters within the modem to meet a set...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-12 tm103 - rev. 2.5 strap code {refer to strap code guide, section 4.3, table 4-4} the strap code is a quick set key that sets many modem parameters. Consult the strap code guide for available strap codes. Parameters set by strap code: dat...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-13 allows the user to set the reacquisition delay time in 1/10 th second increments. Reacq range (hz) {0 – 32000 hz} allows the user to set the reacquisition sweep in 1 hz increments. Adj carrier pwr {normal, supressed} al...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-14 tm103 - rev. 2.5 scrambler sel {none, v.35-iess, v.35 citt, v.35 ef, ibs w/optional framing and optional reed-solomon, reed-solomon scrambler w/optional framing, ccitt, v.35fc, om-73, v.35ef_rs, tpc scrambler (turbo codec), dvb, edmac} ...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-15 rs rate {refer to table 3-1 for valid n/k values} displays the currently used n, k reed-solomon codes. In closed net mode, the user may select custom r-s codes. Interlvr depth {4, 8, 12} allows the user to select the re...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-16 tm103 - rev. 2.5 allows the user to disable or enable flow control. Only visible when ethernet is selected as the interface type. Eth daisy chain {disabled, port 4} allows the user to disable the ethernet port daisy chaining or enable i...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-17 sat ch terrch {1-31 1-31} the up/down arrow keys allow you to traverse the sat terr pairings. The slot numbers may be edited using the keypad. Allows the user to edit the tx edit map to specify the terrestrial slots tha...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-18 tm103 - rev. 2.5 sat ch terrch {1-31 1-31} the up/down arrow keys allow you to traverse the sat terr pairings. The slot numbers may be edited using the keypad. Allows the user to edit the tx edit map to specify the terrestrial slots tha...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-19 tx async mode {es-es, esc enhanced} es-es is the normal ibs async channel. Esc enhanced ca be selected in closed net and uses the overhead signaling bytes in the ibs overhead to pass asynchronous data. Es interface {rs-...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-20 tm103 - rev. 2.5 4.3.5 aupc menu options and parameters aupc menus are only available when the modulator is in ‘closed net’ network spec and framing is ‘efaupc 1/15’. Ef aupc (menu) local aupc (menu) the 'local aupc configuration' menu ...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-21 target eb/no allows the user to set the desired e b /n o for the local receiver. This setting is compared against the receive e b /n o and commands to the remote modem to increase or decrease transmit power accordingly ...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-22 tm103 - rev. 2.5 remote 2047 ber: reports the ber measurement of the receiver 2047 pattern test mode of the remote modem. Ber is reported from the 1x10 -5 to 1x10 -7 in tenth decade steps. If the pattern does not synchronize or is out o...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-23 link status (menu) (the following sub-menus only display when ethernet is selected as the interface type) the status of the following ports may be one of the following: down: the link is down. Unresolved: unable to agre...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-24 tm103 - rev. 2.5 +20v supply displays the measured voltage of the +20 volt power bus located inside the modem. -12v supply displays the measured voltage of the -12 volt power bus located inside the modem. Lnb current displays the measur...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-25 lb synth pll {pass/fail, unmasked/masked} indicates that the tx l-band synthesizer is not locked. This alarm will flash on during certain modem parameter changes. A solid indication points toward a configuration problem...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-26 tm103 - rev. 2.5 indicates that the voltage is not functioning correctly when voltage is enabled. Rx major (menu) fpga cfg {pass/fail, unmasked/masked} indicates a receive fpga hardware failure. Dsp cfg {pass/fail, unmasked/masked} indi...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-27 buff near full {pass/fail, unmasked/masked} indicates that the doppler buffer is about to overflow. Buff overflow {pass/fail, unmasked/masked} indicates that a doppler buffer overflow has occurred. Rx data activity {pas...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-28 tm103 - rev. 2.5 lnb current {pass/fail, unmasked/masked} indicates that current is either below or above the threshold limits of the buc, as specified by the modem. Only active when voltage is enabled. Lnb voltage {pass/fail, unmasked/...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-29 ext clock act {pass/fail, unmasked/masked} indicates that the external clock is not active. Ext ref act {pass/fail, unmasked/masked} indicates no activity on the external reference. Ext ref lock {pass/fail, unmasked/mas...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-30 tm103 - rev. 2.5 buc current buc voltage rx major (menu) fpga cfg dsp cfg signal lock frame lock multiframe lock lb synth pll if synth pll ethernet wan rx minor (menu) buff underflow buff near empty buff near full buff overflow rx data ...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-31 rx level ibs ber rx dvb frm lock lnb current lnb voltage common (menu) terr fpga cfg codec fpga cfg codec dev cfg voltage (menu) +1.5v rx supply +1.5v tx supply +3.3v supply +5v supply +12v supply -12v supply +20v suppl...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-32 tm103 - rev. 2.5 for the following alarms: rcv = yes indicates a received backward alarm. Frc allows the user to force the alarm locally. Idr backward 1 {rcv = no/yes, frc = no/yes} idr backward 2 {rcv = no/yes, frc = no/yes} idr backwa...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-33 4.3.8 system menu options and parameters date (mm/dd/yy) allows the user to enter the current date. Time {hh:mm:ss} allows the user to enter the current time. Config copy {current, cfg1……cfg10} allows user to save and c...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-34 tm103 - rev. 2.5 tcp/ip (menu) boot mode {default, non-vol, bootp} default: if no ethernet interface is to be used. No ip address or mask changes will be allowed. Non-vol: stores and uses ip mask and addresses as provided by the user. B...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-35 broadcast and loop back addresses will not be allowed. These are addresses with all subnet bits set to 0’s or 1’s. To change the display for the ip address mask, modem ip address, server ip address, and router ip addres...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-36 tm103 - rev. 2.5 trap version {v1, v2} this controls the type of message format used when a message trap is generated by the equipment and bound for a snmp host. Messages will only be sent if the unit has been authorized to do so. Autho...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-37 only the appropriate of the vco adjustment screens listed below will be displayed. These are protected fields, to prohibit accidental changes. To edit the field, the user must depress all four of the direction arrow key...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-38 tm103 - rev. 2.5 largest hb gap used for factory test only. If board (menu) indicates the radyne part number for the if board assembly. Agc/ctrl/value {0% - 100%} allows the user to adjust the internal frequency reference for calibratio...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-39 enh async idr seq rs rs custom ibs d&i aupc 8psk 16qam turbo 5 mbps, turbo 20 mbps (the highest option installed will hide the lower rates.) om73 scrambling dvb edmac 4.3.9 test menu options and parameters tx test patte...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-40 tm103 - rev. 2.5 loopback {if, terr tx/rx, baseband tx/rx, none, terr rx, baseband rx, terr tx, baseband tx, ifec tx} terrestrial loopback is performed at the terrestrial interface if:if loopback loops the if output of the modulator to ...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-41 4.4 dmd20 strap codes the strap code is a quick set key that sets many of the modem parameters. For quick setup of the dmd20, strap codes are very helpful. When a strap code is entered, the modem is automatically config...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-42 tm103 - rev. 2.5 68 320 1 1/2 vit none v.35 (iess) dis dis qpsk cnt 72 320 1 3/4 vit none v.35 (iess) dis dis qpsk cnt 80 384 1 1/2 vit none v.35 (iess) dis dis qpsk cnt 96 384 1 3/4 vit none v.35 (iess) dis dis qpsk cnt 129 512 1 1/2 v...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-43 134 192 16/15 1/2 vit ibs ibs dis dis qpsk cnt 137 192 16/15 3/4 vit ibs ibs dis dis qpsk cnt 138 320 16/15 1/2 vit ibs ibs dis dis qpsk cnt 140 320 16/15 3/4 vit ibs ibs dis dis qpsk cnt 145 384 16/15 3/4 vit ibs ibs d...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-44 tm103 - rev. 2.5 83 1600 16/15 3/4 vit ibs ibs dis dis qpsk cnt 85 1664 16/15 1/2 vit ibs ibs dis dis qpsk cnt 86 1664 16/15 3/4 vit ibs ibs dis dis qpsk cnt 89 1728 16/15 1/2 vit ibs ibs dis dis qpsk cnt 90 1728 16/15 3/4 vit ibs ibs d...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-45 closed network: 8.448: 96 kb framing or no framing, 3/4, 7/8 rate fec 6.312: 96 kb framing or no framing, 1/2, 3/4, 7/8 rate fec 2.048: 96 kb framing or 1/15 framing or no framing, 1/2, 3/4, 7/8 rate fec 1.544: 96 kb fr...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-46 tm103 - rev. 2.5 demodulator: method 1 - set mode to idr under demod if menu: set desired rx frequency under demod data menu: set code rate to 3/4 vit set data rate for 8448000 under interface menu: set interface type set buff clock sel...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-47 demodulator: method 1 - set framing to 1/15: set mode to ibs: under demod if menu: set desired rx frequency under demod data menu: set code rate to 3/4 vit set data rate for 1544000 under interface menu: set interface t...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-48 tm103 - rev. 2.5 demodulator: method 1 - set mode to: closed net under demod if menu: set desired rx frequency under demod data menu: set code rate to 3/4 vit set framing for 1/15 under interface menu: set interface type set buff clock ...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-49 4.6.1 data rate data rate affects the drop and insert function in the following ways: • it determines the number of satellite channels that will be displayed in the edit maps. • it contributes to the operational mode se...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-50 tm103 - rev. 2.5 4.6.3 terrestrial framing - drop mode/insert mode the drop mode selection and the insert mode selection identify the terrestrial data-framing format. As previously mentioned, their selection is influenced by the modulat...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-51 4.6.4 d&i sample configurations and d&i clock setup options the following are several examples of how to configure the modem for d&i. Also, refer to figures 3-14 through 3-17 for the d&i clocking setup options available...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-52 tm103 - rev. 2.5 example 2: multidestinational remote site programming drop 512 kbps from a t1 trunk, 3/4 rate viterbi. Extract 512 kbps from a 1536 kbps carrier and insert into a t1 trunk, 3/4 rate viterbi. Drop 512 kbps from a t1 trun...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-53 figure 4-4. Single trunk figure 4-5. Rx only with trunk figure 4-6. Rx only no trunk.
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-54 tm103 - rev. 2.5 4.7 d&i maps and map editing the drop and insert multiplexer is programmed by loading it with a transmit and receive map. Maps always contain 30 entries, although, only the first “n” entries are relevant (see table 4-5)...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-55 rom maps are read-only and may not be modified (refer to table 4-6). Table 4-6. D&i rom maps ro m map t1/e1 time slot # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 1 1 1 1 1 1 1 1 ...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-56 tm103 - rev. 2.5 the following paragraphs give examples of typical configurations that could use the rom maps as templates. The rom map used would have to be first copied to the appropriate active transmit (drop) and/or active receive (...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-57 rom map 6 could be used as the template for an active transmit (drop) and/or active receive (insert) map with a modulator and/or demodulator configured for 768 kbps operation. The t1 or e1 data in the transmit path or t...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-58 tm103 - rev. 2.5 4.8.1 ethernet flow control when disabled, if a packet is received for transmission and no packet buffer space is available, the incoming packet is discarded. When enabled, flow control is used to throttle the transmiss...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-59 figure 4-7. Point-to-multipoint with daisy chaining 4.8.3 packet statistics the following statistics are available under the monitor menu when the ethernet data interface is selected: total packets: this counter display...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-60 tm103 - rev. 2.5 link status: the following status is available under the monitor menu/link status sub-menu when the ethernet data interface is selected: port 1 status: displays the current status of lan port 1. Port 2 status: displays ...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-61 4.9.2 modem setup for terminal mode terminal mode communications and protocol is set from the front panel control by setting the “control mode” parameter to “terminal”, and then setting the “modem port”, “term baud” and...
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-62 tm103 - rev. 2.5 modify the dmd20 selection, if necessary, to match the settings (the front panel ‘system’ sub-menu contains all the terminal emulation controls). 4.12 terminal screens 1. Modem configuration can be monitored and control...
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-63 modulator control screen: demodulator control screen:.
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-64 tm103 - rev. 2.5 modulator drop control screen:.
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-65 demodulator insert control screen:.
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-66 tm103 - rev. 2.5 modulator alarm status screen:.
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-67 demodulator alarm status screen: 40. Ether wan: pass pass no.
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-68 tm103 - rev. 2.5 tc/ip/ftp control screen: 40. Ether wan: pass pass no.
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-69 snmp control screen:.
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-70 tm103 - rev. 2.5 event log screen:.
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-71.
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User interfaces dmd20/dmd20 lbst universal satellite modem 4-72 tm103 - rev. 2.5 aupc control screen: ethernet control screen:.
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Dmd20/dmd20 lbst universal satellite modem user interfaces tm103 – rev. 2.5 4-73.
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Dmd20/dmd20 lbst universal satellite modem rear panel interfaces tm103 – rev. 2.5 5-1 rear panel interfaces 5 this section discusses the electrical interfaces available from the rear panel. All locations are as viewed from the rear of the unit unless otherwise specified. 5.0 dmd20 connections all dm...
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Rear panel interfaces dmd20/dmd20 lbst universal satellite modem 5-2 tm103 - rev. 2.5 figure 5-2. Dmd20 lbst universal satellite modem rear panel configurations 5.1 compact flash the compact flash slot is located on the right side as viewed from the rear of the unit. It is for radyne corp. Use. 5.2 ...
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Dmd20/dmd20 lbst universal satellite modem rear panel interfaces tm103 – rev. 2.5 5-3 5.2.2 dc power input/switch the optional dc power input and switch (figure 5-1) is available for all dmd20 products. The unit may be powered from a 36 – 75 vdc source with a maximum unit power consumption of 3 a. R...
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Rear panel interfaces dmd20/dmd20 lbst universal satellite modem 5-4 tm103 - rev. 2.5 5.3.6 alarm (j15) the alarm port is a 15-pin female “d” connector. Refer to table 5-2 for pinouts. Table 5-2. Alarm port 15-pin female “d” connector (j15) pin no. Signal name signal direction 1 mod fault - c mf-c n...
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Dmd20/dmd20 lbst universal satellite modem rear panel interfaces tm103 – rev. 2.5 5-5 5.3.8 async (j17) the asynchronous data interface port is a 9-pin female “d” connector. Refer to table 5-3 for pinouts. Table 5-3. Async port 9-pin female “d” connector (j17) pin no. Signal name signal direction 1 ...
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Rear panel interfaces dmd20/dmd20 lbst universal satellite modem 5-6 tm103 - rev. 2.5 12 send timing b (+) st-b output 13 clear t send b (+) cs-b output 14 send data b (+) sd-b input 15 send timing a (-) st-a output 16 receive data b (+) rd-b output 17 receive timing a (-) rt-a output 18 modulator f...
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Dmd20/dmd20 lbst universal satellite modem rear panel interfaces tm103 – rev. 2.5 5-7 when operating the remote port as rs232 using a cable pinned 1 for 1 may cause communication failures due to miss routing of standard rs232 com port signals. When operating the remote port as rs232, the cable used ...
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Rear panel interfaces dmd20/dmd20 lbst universal satellite modem 5-8 tm103 - rev. 2.5 5.4.4 alarm (j15) the alarm port is a 15-pin female “d” connector. Refer to table 5-2 for pinouts. Table 5-2. Alarm port 15-pin female “d” connector (j15) pin no. Signal name signal direction 1 mod fault - c mf-c n...
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Dmd20/dmd20 lbst universal satellite modem rear panel interfaces tm103 – rev. 2.5 5-9 5.4.6 async (j17) the asynchronous data interface port is a 9-pin female “d” connector. Refer to table 5-3 for pinouts. Table 5-3. Async port 9-pin female “d” connector (j17) pin no. Signal name signal direction 1 ...
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Rear panel interfaces dmd20/dmd20 lbst universal satellite modem 5-10 tm103 - rev. 2.5 13 clear t send b (+) cs-b output 14 send data b (+) sd-b input 15 send timing a (-) st-a output 16 receive data b (+) rd-b output 17 receive timing a (-) rt-a output 18 modulator fault - open collector mf output ...
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Dmd20/dmd20 lbst universal satellite modem rear panel interfaces tm103 – rev. 2.5 5-11 5.5 idr/ibs interface (optional) 5.5.1 esc alarm (j1) the esc (engineering service circuits) alarms port is a 25-pin female “d” connector. Refer to table 5-6 for pinouts. Table 5-6. Esc alarm port 25-pin female “d...
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Rear panel interfaces dmd20/dmd20 lbst universal satellite modem 5-12 tm103 - rev. 2.5 5.5.2 64k audio (j2) the 64k audio port allows for communications between earth stations. It is a 9-pin female “d” connector that complies to iess 308. Refer to table 5-7a for pinouts in audio mode and table 5-7b ...
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Dmd20/dmd20 lbst universal satellite modem rear panel interfaces tm103 – rev. 2.5 5-13 5.5.3 8k data (j3) the 8k data port allows for communications between earth stations. It is a 15-pin female “d” connector that complies to iess 308. Refer to table 5-8 for pinouts. Table 5-8. 8k data port 15-pin f...
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Rear panel interfaces dmd20/dmd20 lbst universal satellite modem 5-14 tm103 - rev. 2.5 10 no connection --- --- 11 receive data b (+) rd-b output 12 drop data out (-) ddo-a output 13 insert data in (-) exc (-) idi-a input 14 mod fault mod-flt open collector output 15 demod fault dmd-flt open collect...
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Dmd20/dmd20 lbst universal satellite modem rear panel interfaces tm103 – rev. 2.5 5-15 15 idr esc audio input channel 1a escaudtx 1a input 16 idr esc audio input channel 2a escaudtx 2a input 17 idr esc audio output channel 1a escaud rx 1a output 18 idr esc audio output channel 2a escaud rx 2a output...
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Rear panel interfaces dmd20/dmd20 lbst universal satellite modem 5-16 tm103 - rev. 2.5 40 idr esc backward alarm out - 2 common escbwo 2c no direction 41 synchronous data terminal timing – b sync tt-b input 42 idr esc backward alarm output - 2 normally open escbwo 2no no direction 43 g.703 drop data...
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Dmd20/dmd20 lbst universal satellite modem rear panel interfaces tm103 – rev. 2.5 5-17 62 idr esc backward alarm out - 4 normally open escbwo 4no no direction 63 ibs transmit octet input - b txo-b input 64 synchronous data – data mode out - b sync dm-b output 65 synchronous data - clear to send - b ...
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Rear panel interfaces dmd20/dmd20 lbst universal satellite modem 5-18 tm103 - rev. 2.5 5.7.1 hssi (j6) the hssi (high-speed serial interface) (j6) complies with the hssi functional and electrical specifications. The physical interface is a 50-pin scsi-2 type connector. Electrical levels are ecl. The...
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Dmd20/dmd20 lbst universal satellite modem rear panel interfaces tm103 – rev. 2.5 5-19 5.8 asi/dvb/m2p interface (optional) 5.8.1 asi in (j1) the asi in port (j1) is supported on the bnc connector. The interface complies with dvb asi electrical specifications. 5.8.2 asi out (j2) the asi out port (j2...
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Rear panel interfaces dmd20/dmd20 lbst universal satellite modem 5-20 tm103 - rev. 2.5 24 dvalid- input 12 psync+ input 25 psync- input 13 cable shield --- table 5-12b. J3 − m2p in - 25-pin female pin number signal name direction 1 outclk+ output 14 outclk- output 2 clk+ input 15 clk- input 3 sync+ ...
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Dmd20/dmd20 lbst universal satellite modem rear panel interfaces tm103 – rev. 2.5 5-21 5.9.4 dvb/m2p out (j4) the dvb or m2p out port (j4) is also supported on the db-25 female connector. It complies with rs-422 electrical specifications. Refer to table 5-13a for dvb and 5-13 b for m2p pinouts for t...
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Rear panel interfaces dmd20/dmd20 lbst universal satellite modem 5-22 tm103 - rev. 2.5 table 5-13b. J3 - m2p out – 25-pin female ‘d’ sub connector pin number signal name direction 1 nc output 14 nc output 2 clk+ output 15 clk- output 3 sync+ output 16 sync- output 4 valid+ output 17 valid- output 5 ...
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Dmd20/dmd20 lbst universal satellite modem rear panel interfaces tm103 – rev. 2.5 5-23 5.10 ethernet data interface (optional) the optional dmd20 ethernet data interface provides four rj-45, auto-crossover, auto-sensing, 10/100 ethernet data ports where: js1 is port 1 js2 is port 2 js3 is port 3 js4...
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Rear panel interfaces dmd20/dmd20 lbst universal satellite modem 5-24 tm103 - rev. 2.5.
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Dmd20/dmd20 lbst universal satellite modem maintenance and troubleshooting tm103 – rev. 2.5 6-1 maintenance and troubleshooting 6 this section discusses unit maintenance and troubleshooting for the dmd20 universal satellite modem. The dmd20 contains a lithium battery. Danger of explosion exists if t...
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Maintenance and troubleshooting dmd20/dmd20 lbst universal satellite modem 6-2 tm103 - rev. 2.5 symptom possible cause there is an improper receive input to modem. The receive carrier level is too low. The receive carrier frequency is outside of the acquisition range. The transmit carrier is incompa...
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Dmd20/dmd20 lbst universal satellite modem maintenance and troubleshooting tm103 – rev. 2.5 6-3 6.1.1.2 major rx alarms alarm possible cause fpga cfg indicates a receive fpga hardware failure. Dsp cfg indicates a receive dsp failure. Signal lock indicates that the demod is unable to lock to a signal...
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Maintenance and troubleshooting dmd20/dmd20 lbst universal satellite modem 6-4 tm103 - rev. 2.5 6.1.1.4 minor rx alarms alarm possible cause buff underflow indicates that a doppler buffer underflow has occurred. Buff near empty indicates that the doppler buffer is about to underflow. Buff near full ...
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Dmd20/dmd20 lbst universal satellite modem maintenance and troubleshooting tm103 – rev. 2.5 6-5 6.1.1.5 drop and insert alarms alarm possible cause multiframe lock the insert framer is not in sync. Crc lock an insert crc fault occurred. Valid in t1-esf, pcm-30, or pcm- 30c modes. T1 signaling an ins...
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Maintenance and troubleshooting dmd20/dmd20 lbst universal satellite modem 6-6 tm103 - rev. 2.5 6.1.2 alarm masks the dmd20 performs a high degree of self-monitoring and fault isolation. The alarms for these faults are separated into the following three categories: active alarms common equipment ala...
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Dmd20/dmd20 lbst universal satellite modem maintenance and troubleshooting tm103 – rev. 2.5 6-7 6.1.2.3 backward alarms backward alarms are alarms that are fed back to or received from the other end of the satellite link. In ibs mode (including drop & insert), backward alarm 1 is the only one used. ...
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Maintenance and troubleshooting dmd20/dmd20 lbst universal satellite modem 6-8 tm103 - rev. 2.5 table 6-4. Ibs fault conditions and actions (includes drop and insert) fault detected on terrestrial link (across interface a) fa1 - loss of terrestrial input fa2 - loss of terrestrial signaling fa3 - los...
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Dmd20/dmd20 lbst universal satellite modem technical specifications tm103 – rev. 2.5 7-1 technical specifications 7 7.0 data rates bpsk uncoded 4.8 kbps to 10.0 mbps 1/2 rate bpsk 2.4 kbps to 5.0 mbps 3/4 rate bpsk 3.6 kbps to 7.5 mbps 7/8 rate bpsk 4.2 kbps to 8.75 mbps qpsk uncoded 9.6 kbps to 20....
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Technical specifications dmd20/dmd20 lbst universal satellite modem 7-2 tm103 - rev. 2.5 7.2 demodulator demodulation bpsk, qpsk, and oqpsk (8psk, 16qam optional) if tuning range 50 to 90, 100 to 180 mhz in 1 hz steps l-band tuning range 950 to 2050 mhz in 1 hz steps impedance if, 75-ohm (50-ohm opt...
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Dmd20/dmd20 lbst universal satellite modem technical specifications tm103 – rev. 2.5 7-3 7.6 terrestrial interfaces a variety of standard interfaces are available for the dmd20 modem in stand-alone applications. 7.7 idr/esc interface (optional) g.703 t1 (dsx1) 1.544 mbps, 100-ohm balanced, ami and b...
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Technical specifications dmd20/dmd20 lbst universal satellite modem 7-4 tm103 - rev. 2.5 7.15 dmd20 data rate limits 7.15.1 non-dvb modulation code rate min data rate max data rate bpsk none 4800 10000000 bpsk vit 1/2 2400 5000000 bpsk vit 3/4 3600 7500000 bpsk vit 7/8 4200 8750000 bpsk seq 1/2 2400...
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Dmd20/dmd20 lbst universal satellite modem technical specifications tm103 – rev. 2.5 7-5 oqpsk tpc .495 4752 6312000 oqpsk tpc .793 7612 6312000 8psk tre 2/3 9600 20000000 8psk tpc 3/4 10800 20000000 8psk tpc 7/8 12600 20000000 8psk tpc .495 9504 6312000 8psk tpc .793 15225 6312000 16qam vit 3/4 144...
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Technical specifications dmd20/dmd20 lbst universal satellite modem 7-6 tm103 - rev. 2.5 188 mode modulation code rate min data rate max data rate bpsk vit 1/2 2400 4607843 bpsk vit 2/3 2950 6143790 bpsk vit 3/4 3318 6911764 bpsk vit 5/6 3687 7679738 bpsk vit 7/8 3871 8063725 qpsk vit 1/2 4424 92156...
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Dmd20/dmd20 lbst universal satellite modem technical specifications tm103 – rev. 2.5 7-7 7.16 dmd20/dmd20 lbst ber specifications 7.16.1 ber performance (viterbi) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r viterbi decoder specification 1/2 rate specifi...
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Technical specifications dmd20/dmd20 lbst universal satellite modem 7-8 tm103 - rev. 2.5 7.16.2 ber performance (sequential) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r sequential decoder specification 1/2 rate specification 3/4 rate specification 7/8 r...
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Dmd20/dmd20 lbst universal satellite modem technical specifications tm103 – rev. 2.5 7-9 7.16.3 ber performance (viterbi with reed-solomon) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r viterbi decoder reed solomon specification 1/2 rate specification 3/4...
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Technical specifications dmd20/dmd20 lbst universal satellite modem 7-10 tm103 - rev. 2.5 7.16.4 ber performance (turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r turbo decoder specification turbo 0.495 specification turbo 0.793 typical performance b/...
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Dmd20/dmd20 lbst universal satellite modem technical specifications tm103 – rev. 2.5 7-11 7.16.5 ber performance (8psk trellis) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r trellis decoder specification 2/3 rate specification 2/3 rate w/rs typical perfor...
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Technical specifications dmd20/dmd20 lbst universal satellite modem 7-12 tm103 - rev. 2.5 7.16.6 ber performance (8psk turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r turbo decoder specification turbo 0.793 typical performance 8psk uncoded theory fig...
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Dmd20/dmd20 lbst universal satellite modem technical specifications tm103 – rev. 2.5 7-13 7.16.7 ber performance (16qam viterbi) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 eb/no in db be r viterbi decoder specification 3/4 rate specification 7/8 rate typical p...
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Technical specifications dmd20/dmd20 lbst universal satellite modem 7-14 tm103 - rev. 2.5 7.16.8 ber performance (16qam viterbi with reed-solomon) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 eb/no in db be r viterbi decoder - reed solomon specification 3/4 rate...
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Dmd20/dmd20 lbst universal satellite modem technical specifications tm103 – rev. 2.5 7-15 7.16.9 ber performance (16qam turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 eb/no in db be r turbo decoder turbo 0.495 turbo 0.793 typical performance 16qam uncoded t...
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Technical specifications dmd20/dmd20 lbst universal satellite modem 7-16 tm103 - rev. 2.5 7.16.10 ber performance ((o)qpsk turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r turbo decoder specification turbo 1/2 specification turbo 3/4 typical performan...
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Dmd20/dmd20 lbst universal satellite modem technical specifications tm103 – rev. 2.5 7-17 7.16.11 ber performance (8psk turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r turbo decoder specification turbo 3/4 typical performance 8psk uncoded theory figu...
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Technical specifications dmd20/dmd20 lbst universal satellite modem 7-18 tm103 - rev. 2.5 7.16.12 ber performance (16qam turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 eb/no in db be r turbo decoder specification turbo 3/4 typical performance 16qam uncoded ...
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Dmd20/dmd20 lbst universal satellite modem technical specifications tm103 – rev. 2.5 7-19 1/2 rate 3/4 rate 7/8 rate 1/2 rate 3/4 rate 7/8 rate 1e-3 4.2 db 5.3 db 6.2 db 3.9 db 4.9 db 5.8 db 1e-4 4.8 db 6.1 db 7.1 db 4.5 db 5.6 db 6.5 db 1e-5 5.5 db 6.8 db 7.9 db 5.1 db 6.3 db 7.2 db 1e-6 6.1 db 7.6...
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Technical specifications dmd20/dmd20 lbst universal satellite modem 7-20 tm103 - rev. 2.5 turbo 0.495 turbo 0.793 turbo 0.495 turbo 0.793 1e-3 2.5 db 3.3 db 2.2 db 3 db 1e-4 2.7 db 3.7 db 2.3 db 3.2 db 1e-5 3 db 4.1 db 2.5 db 3.4 db 1e-6 3.2 db 4.4 db 2.6 db 3.6 db 1e-7 3.5 db 4.8 db 2.7 db 3.8 db 1...
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Dmd20/dmd20 lbst universal satellite modem technical specifications tm103 – rev. 2.5 7-21 3/4 rate 7/8 rate 3/4 ra te 7/8 rate 1e-3 8.9 db 10.3 db 8.1 db 9.5 db 1e-4 9.8 db 11.1 db 9 db 10.3 db 1e-5 10.7 db 11.9 db 9.9 db 11.1 db 1e-6 11.5 db 12.7 db 10.7 db 11.9 db 1e-7 12.4 db 13.5 db 11.6 db 12.7...
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Technical specifications dmd20/dmd20 lbst universal satellite modem 7-22 tm103 - rev. 2.5 turbo 1/2 turbo 3/4 turbo 7/8 turbo 1/2 turbo 3/4 turbo 7/8 1e-3 tbd 3.2 db 4 db tbd 2.8 db 3.7 db 1e-4 tbd 3.4 db 4.1 db tbd 3 db 3.8 db 1e-5 2.7 db 3.6 db 4.2 db 2.4 db 3.2 db 3.9 db 1e-6 2.9 db 3.8 db 4.3 db...
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Dmd20/dmd20 lbst universal satellite modem technical specifications tm103 – rev. 2.5 7-23 7.16.13 input level refer to figure 7-13 for the dmd20 power threshold limits. Figure 7-13. Demodulator input level specification.
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Technical specifications dmd20/dmd20 lbst universal satellite modem 7-24 tm103 - rev. 2.5 7.16.14 acg output voltage the agc output voltage is a function of the input power level in dbm. The agc output voltage is found on the alarm connector pin 14 of j15. Figure 7-8. Agc voltage monitor.
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Dmd20/dmd20 lbst universal satellite modem appendix a tm103 – rev. 2.5 a-1 product options a a.0 hardware options the following enhanced interface cards are available. A.0.1 g.703/idr esc interface the dmd20 can be equipped with a g.703/idr esc interface. A.0.2 turbo card the dmd20 can be equipped w...
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Appendix a dmd20/dmd20 lbst universal satellite modem a-2 tm103 - rev. 2.5 a.0.10 as/5167 super card (variable reed-solomon) the dmd20 can be equipped with an optional as/5167 super card. This card allows variable reed-solomon rates as well as turbo codec and sequential codec outer code. This option...
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Dmd20/dmd20 lbst universal satellite modem appendix b tm103 – rev. 2.5 b-1 front panel upgrade procedure b b.0 introduction the dmd20 universal satellite modem offers the ability to perform field upgrades of the modem’s feature set quickly and easily from the front panel. Purchased upgrades will bec...
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Appendix b dmd20/dmd20 lbst universal satellite modem b-2 tm103 – rev. 2.5 2. Contact radyne with the unit id and desired upgrades. The modem’s unit id can be found on the front panel as follows: a. From the modem’s main menu, scroll right to the system menu. B. Scroll down. C. Scroll right to the h...
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Dmd20/dmd20 lbst universal satellite modem appendix b tm103 – rev. 2.5 b-3 b.3 demonstration procedure the procedure for enabling a 30-day demo of the dmd20 options is similar to the procedure used for permanently updating the modems feature set. The one big difference being that at the end of 30 da...
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Appendix b dmd20/dmd20 lbst universal satellite modem b-4 tm103 – rev. 2.5 2. Contact radyne with the unit id and request a demonstration. The modem’s unit id can be found on the front panel as follows: a. From the modem’s main menu, scroll right to the system menu. B. Scroll down. C. Scroll right t...
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Dmd20/dmd20 lbst universal satellite modem appendix b tm103 – rev. 2.5 b-5 b.3.3 running in demonstration mode because of the possible interruption in traffic when the demonstration mode expires, several indicators are used to inform an operator that the modem is indeed, operating in demonstration m...
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Appendix b dmd20/dmd20 lbst universal satellite modem b-6 tm103 – rev. 2.5 b.3.4 canceling demonstration mode at any time, a demonstration may be canceled and have the modem return to its normal operation. Once the demonstration has been canceled, it cannot be restarted using the old demonstration c...
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Dmd20/dmd20 lbst universal satellite modem appendix c tm103 – rev. 2.5 c- 1 carrier control c c.0 states the dmd20 transmitter will turn off the carrier output automatically when the modem determines there is a major alarm. This is done to prevent the carrier from outputting an unknown spectrum and ...
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Appendix c dmd20/dmd20 lbst universal satellite modem c-2 tm103 – rev. 2.5 c.5 carrier rts modulator output is turned off before reprogramming modulator functions that may alter the output spectrum through the front panel, and the user is required to enter “yes” to re-enable output after the change....
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Dmd20/dmd20 lbst universal satellite modem glossary tm103 – rev. 2.5 g-1 glossary g a a ampere ac alternating current adc analog to digital converter agc automatic gain control ais alarm indication system. A signal comprised of all binary 1s. Amsl above mean sea level ansi american national standard...
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Glossary dmd20/dmd20 lbst universal satellite modem g-2 tm103 – rev. 2.5 c c celsius cats computer aided test software ca/xxxx cable assembly cd-rom compact disk – read only memory clk clock cm centimeter com common cpu central processing unit crc cyclic redundancy check. A system of error checking ...
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Dmd20/dmd20 lbst universal satellite modem glossary tm103 – rev. 2.5 g-3 f f fahrenheit fas frame acquisition sync. A repeating series bits, which allow acquisition of a frame. Fcc federal communications commission fec forward error correction fifo first in, first out fpga field programmable gate ar...
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Glossary dmd20/dmd20 lbst universal satellite modem g-4 tm103 – rev. 2.5 k kbps kilobits per second kbps kilobytes per second kg kilogram khz kilohertz ksps kilosymbols per second l lcd liquid crystal display led light emitting diode lo local oscillator m ma milliampere mbps megabits per second mfas...
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Dmd20/dmd20 lbst universal satellite modem glossary tm103 – rev. 2.5 g-5 q qam quadrature amplitude modulation qpsk quadrature phase shift keying r ram random access memory rf radio frequency rom read only memory rms root mean square ru rack unit. 1 ru = 1.75”/4.45 cm rx receive (receiver) rxd recei...
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Glossary dmd20/dmd20 lbst universal satellite modem g-6 tm103 – rev. 2.5 w x y z w watt misc. µs microsecond 16qam 16 quadrature amplitude modulation 8psk 8 phase shift keying.