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Radyne DMD2401 LB Installation and operation manual

Manual is about: L-Band Satellite Modem and ODU Driver

Summary of DMD2401 LB

  • Page 1

    Dmd2401 lb/st l-band satellite modem and odu driver installation and operation manual tm075 - rev. 1.3 march, 2002 - notice - 2002, radyne comstream corporation. This manual may not in whole or in part be copied, reproduced, translated or reduced to any electronic or magnetic storage medium without ...

  • Page 4

    Dmd2401 lb/st l-band satellite modem and odu driver warranty policy tm075 - rev. 1.3 iii radyne comstream corporation warranty policy warranty and service radyne comstream corporation (seller) warrants the items manufactured and sold by radyne comstream corporation to be free of defects in material ...

  • Page 5

    Warranty policy dmd2401 lb/st l-band satellite modem and odu driver tm075 – rev. 1.3 iv product or service furnished or to be furnished, as the case may be, which is the subject of claim or dispute. Statements made by any person, including representatives of radyne comstream corporation, which are i...

  • Page 6

    Dmd2401 lb/st l-band satellite modem and odu driver record of revisions tm075 - rev. 1.3 v dmd2401 lb/st l-band satellite modem and odu driver installation and operation manual tm075 – record of revisions radyne comstream corporation is constantly improving its products and therefore the information...

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    Dmd2401 lb/st l-band satellite modem and odu driver tm075 – rev. 1.3 vi this page is intentionally left blank.

  • Page 8

    Dmd2401 lb/st l-band satellite modem and odu driver table of contents tm075 - rev. 1.3 vii table of contents 1.0 description______________________________________________________1-1 1.1 dmd2401 available options ________________________________________1-2 1.1.1 reed-solomon codec ___________________...

  • Page 9

    Table of contents dmd2401 lb/st l-band satellite modem and odu driver viii tm075 - rev. 1.3 3.8 esc backward alarms_____________________________________________3-7 3.8.1 to disable the esc backward alarms _______________________________3-7 3.9 idr or ibs/d&i configuration instructions ______________...

  • Page 10

    Dmd2401 lb/st l-band satellite modem and odu driver table of contents tm075 - rev. 1.3 ix 4.4 remote port user interface ________________________________________4-28 4.4.1 protocol structure ______________________________________________4-28 4.4.2 protocol wrapper ___________________________________...

  • Page 11

    Table of contents dmd2401 lb/st l-band satellite modem and odu driver x tm075 - rev. 1.3 5.2.9.1 rs-232 adapter to j9 __________________________________________5-6 5.2.9.2 v.35 adapter to j9_____________________________________________5-6 5.2.10 tx dc voltage indicator_______________________________...

  • Page 12

    Dmd2401 lb/st l-band satellite modem and odu driver table of contents tm075 - rev. 1.3 xi 5.4.4 remote (j4) _________________________________________________5-13 5.4.5 alarm (j5) __________________________________________________5-14 5.4.6 tx if mon (j6)______________________________________________...

  • Page 13

    Table of contents dmd2401 lb/st l-band satellite modem and odu driver xii tm075 - rev. 1.3 section 7 – technical specifications 7.0 introduction _____________________________________________________7-1 7.1 transmit and receive data rates ____________________________________7-1 7.2 modulator specific...

  • Page 14

    Dmd2401 lb/st l-band satellite modem and odu driver introduction tm075 - rev. 1.3 1-1 section 1 – introduction 1.0 description the radyne comstream corporation dmd2401 lb/st l-band satellite modem and outdoor unit (odu) driver is a microprocessor-controlled binary phase shift keyed (bpsk), quadratur...

  • Page 15

    Introduction dmd2401 lb/st l-band satellite modem and odu driver 1-2 tm075 – rev. 1.3 table 1-1. Data rates fec 1/2 2/3 3/4 7/8 bpsk 4800 bps – 1250 kbps n/a 7200 bps – 1875 kbps 8400 bps – 2187.5 kbps qpsk 9600 bps – 2500 kbps n/a 14400 bps – 3750 kbps 16800 bps – 4375 kbps oqpsk 9600 bps – 2500 kb...

  • Page 16

    Dmd2401 lb/st l-band satellite modem and odu driver introduction tm075 - rev. 1.3 1-3 1.1.4 customized options the dmd2401 may be customized for specific customer requirements. Most modifications/customization can be accomplished by means of firmware/software modifications. The following are example...

  • Page 17

    Introduction dmd2401 lb/st l-band satellite modem and odu driver 1-4 tm075 – rev. 1.3 this page is intentionally left blank.

  • Page 18

    Dmd2401 lb/st l-band satellite modem and odu driver installation tm075 - rev. 1.3 2-1 section 2 – installation 2.0 installation requirements the dmd2401 lb/st modem is designed to be installed within any standard 19-inch wide equipment cabinet or rack, and requires two rack units of mounting space (...

  • Page 19

    Installation dmd2401 lb/st l-band satellite modem and odu driver 2-2 tm075 – rev. 1.3 2.2 removal and assembly if using a knife or cutting blade to open the carton, exercise caution to ensure that the blade does not extend into the carton, but only cuts the tape holding the carton closed. Carefully ...

  • Page 20

    Dmd2401 lb/st l-band satellite modem and odu driver installation tm075 - rev. 1.3 2-3 turn the unit ‘on’ by placing the rear panel switch (located above the power entry connector) to the ‘on’ position. Upon initial and subsequent power-ups, the dmd2401 lb/st microprocessor will test itself and sever...

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    Installation dmd2401 lb/st l-band satellite modem and odu driver 2-4 tm075 – rev. 1.3 this page is intentionally left blank.

  • Page 22

    Dmd2401 lb/st l-band satellite modem and odu driver operation tm075 - rev. 1.3 3-1 section 3 – operation 3.0 theory of operation a digital terrestrial interface supplies the modulator with a data stream. The data stream is synchronized if the incoming stream is framed. The data is scrambled, and fec...

  • Page 23

    Operation dmd2401 lb/st l-band satellite modem and odu driver 3-2 tm075 – rev. 1.3 3.2.2 scpc point to multi–point links in a broadcast application a broadcast application might involve the necessity of sending continuous or intermittent data from one source and “broadcasting” the information to man...

  • Page 24

    Dmd2401 lb/st l-band satellite modem and odu driver operation tm075 - rev. 1.3 3-3 the dmd2401 lb/st is specifically designed to be usable as the remote site modem of a tdma network when coupled with a proper “burst” demodulator at the hub site. Since the frequencies can be assigned on demand, the n...

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    Operation dmd2401 lb/st l-band satellite modem and odu driver 3-4 tm075 – rev. 1.3 function description aupc enable/disable enables/disables the aupc to function locally aupc eb/no desired e b /n 0 of remote modem aupc min lvl sets minimum output power to be used aupc max lvl sets maximum output pow...

  • Page 26

    Dmd2401 lb/st l-band satellite modem and odu driver operation tm075 - rev. 1.3 3-5 kbps baud rate example for standard ibs kbps baud rate example for enhanced mode 128 64 9.6 300 256 128 19.2 600 384 192 32 600 512 256 64 1200 640 320 128 2400 768 384 192 4800 896 448 256 4800 1024 512 320 9600 1152...

  • Page 27

    Operation dmd2401 lb/st l-band satellite modem and odu driver 3-6 tm075 – rev. 1.3 two software-controlled modes are designed into the card to best utilize the available bits; “standard ibs” and “ibs (async)”. The characteristics of the channel interface are also determined by the standard or async ...

  • Page 28

    Dmd2401 lb/st l-band satellite modem and odu driver operation tm075 - rev. 1.3 3-7 3.8 esc backward alarms when running in idr mode and if the modem has the esc option, there will be four backward alarms available for use by the earth stations at each end of the link (both ends must have the esc opt...

  • Page 29

    Operation dmd2401 lb/st l-band satellite modem and odu driver 3-8 tm075 – rev. 1.3 3.9.2 ibs/d&i configuration (older modems) 1. In this configuration, j17 on the back panel will be used as the es-es communications port. 2. Attach the 10 pin ribbon cable from j17 on the back panel to j11 on the as/3...

  • Page 30

    Dmd2401 lb/st l-band satellite modem and odu driver operation tm075 - rev. 1.3 3-9 3.10.1 interface type interface type affects the terrestrial framing and data rates used by the drop & insert function in the following ways: 1. When a t1 interface type is selected, the terrestrial framing options wi...

  • Page 31

    Operation dmd2401 lb/st l-band satellite modem and odu driver 3-10 tm075 – rev. 1.3 3. Once drop & insert mode has been selected, trying to change the data rate to something other than another valid d&i data rate will result in the error message ‘data rate out of bounds.’ the change will not be allo...

  • Page 32

    Dmd2401 lb/st l-band satellite modem and odu driver operation tm075 - rev. 1.3 3-11 3.10.4.1 insert terrestrial frame source the insert terrestrial frame source selection tells the modem where the insert terrestrial frame is coming from. External means the terrestrial frame is to be input via the in...

  • Page 33

    Operation dmd2401 lb/st l-band satellite modem and odu driver 3-12 tm075 – rev. 1.3 force terbck – allows the operator to force the terrestrial backward alarm output to on, off, or normal for testing purposes. Force satbck – allows the operator to force the satellite backward alarm output to on, off...

  • Page 34

    Dmd2401 lb/st l-band satellite modem and odu driver operation tm075 - rev. 1.3 3-13 for the receive side: 1. With rx side channels configured as follows: ch1 to ts1, ch2 to ts2, ch3 to ts3 and ch4 to ts4. 2. After the timeslots are assigned properly, scroll to the mapping menu and use the above proc...

  • Page 35

    Operation dmd2401 lb/st l-band satellite modem and odu driver 3-14 tm075 – rev. 1.3 3.12.2 baseband loopback baseband loopback provides the following data loopback on the baseband (or framing card) and allows testing of the terrestrial interface of the modem: note: on the dmd2401, a framing card is ...

  • Page 36

    Dmd2401 lb/st l-band satellite modem and odu driver operation tm075 - rev. 1.3 3-15 figure 3-5. Tx/rx terrestrial loopback figure 3-6. Tx baseband loopback figure 3-7. Rx baseband loopback figure 3-8. Tx/rx baseband loopback.

  • Page 37

    Operation dmd2401 lb/st l-band satellite modem and odu driver 3-16 tm075 – rev. 1.3 figure 3-9. If loopback.

  • Page 38

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-1 section 4 – user interfaces 4.0 user interfaces there are two user interfaces available for the dmd2401 lb/st. These are: 1. Front panel 2. Terminal 4.1 front panel user interface the front panel of the dmd2401 ...

  • Page 39

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-2 tm075 – rev. 1.3 4.1.1 front panel lcd 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 d...

  • Page 40

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-3 4.1.3 front panel keypad the front panel keypad consists of two areas: a 10-key numeric entry with 2 additional keys for the ‘enter’ and ‘clear’ function. The second area is a set of ‘arrow’ or ‘cursor’ keys ( ↑...

  • Page 41

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-4 tm075 – rev. 1.3 figure 4-2. Entering new parameters 4.2 front panel control menu screens the dmd2401 lb/st front panel control screens are broken down into sections under several main menus. 4.2.1 main menus modulator demodulat...

  • Page 42

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-5 spectrum inv: {normal, inverted} allows the user to invert the direction of rotation for psk modulation. Normal meets the iess specification. Modulation: {bpsk, oqpsk, qpsk, 8psk} allows the user to select the m...

  • Page 43

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-6 tm075 – rev. 1.3 displays the currently used reed-solomon interleaver depth. In closed net mode, a depth of 4 or 8 may be selected. 4.2.3 demodulator demod if/rf (menu): note: the frequencies of the block upconverter (buc) and l...

  • Page 44

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-7 idr oh type: {voice, 64kbit} available with 96 kbps (idr) framing..

  • Page 45

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-8 tm075 – rev. 1.3 symbol pair: {normal, swapped} available in bpsk modulation. Reed-solomon (menu): dmdrs enable: {enable disable} enables or disables the reed-solomon decoder dmdrs codes: {any valid n/k values can be entered (re...

  • Page 46

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-9 tx g703 intf: {u.E1, b.E1, b.T1.B8zs, b.T1.Ami} allows the user to select the transmit g.703 interface type. Only available when g.703 interface is installed. Tx d&i (menu): drop mode: {enable, disable} e1 mode:...

  • Page 47

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-10 tm075 – rev. 1.3 level: estimated receive signal (in dbm) as seen by the demodulator. Agc voltage: (optional configuration) displays the voltage level of agc present at pin 5 of the alarm connector (j6). Eb/no: estimated eb/no ...

  • Page 48

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-11 txuproc mask: {pass/fail, no/yes} tx processor fault. Indicates a hardware transmit or dsp failure within the modem. Yes = masked, no = unmasked txpower mask: {pass/fail, no/yes} indicates that the modem tx out...

  • Page 49

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-12 tm075 – rev. 1.3 rxlevel mask: {pass/fail, no/yes} this alarm indicates that the receive automatic gain control is saturated (i.E., too much signal power is being supplied to the modem). Rx fpga mask: {pass/fail, no/yes} this a...

  • Page 50

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-13 buf>90% mask: {pass/fail, no/yes} indicates that the doppler buffer has gone above 90% full and may overflow. Vitlock mask: {pass/fail, no/yes} indicates that the viterbi decoder is not locked. Seqlock mask: {p...

  • Page 51

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-14 tm075 – rev. 1.3 common (menu): -12volt mask: {pass/fail, no/yes} indicates the power supply voltage is out of range. +12volt mask: {pass/fail, no/yes} indicates the power supply voltage is out of range. +5volt mask: {pass/fail...

  • Page 52

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-15 txosclk: {pass/fail} indicates that the tx oversample clock pll is not locked. This alarm will flash ‘on’ during certain modem parameter changes. Compclk: {pass/fail} indicates that the tx composite clock pll i...

  • Page 53

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-16 tm075 – rev. 1.3 rx fpga: {pass/fail} this alarm indicates that a receive fpga hardware fault has occurred. Minor tx (menu): tx activity (menu): terrclk: {pass/fail} indicates no terrestrial clock activity. Int clk: {pass/fail}...

  • Page 54

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-17 rx activity (menu): buf clk mask: {pass/fail, no/yes} indicates that the selected buffer clock source is not active. Ext bnc mask: {pass/fail, no/yes} indicates no activity on the external bnc clock port. Rx sa...

  • Page 55

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-18 tm075 – rev. 1.3 temp mask: {pass/fail, no/yes} fail indicates that internal temperature of the modem is out of range. Intfpga mask: {pass/fail, no/yes} indicates a hardware failure on the interface card. Battery mask: {pass/fa...

  • Page 56

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-19 time: {hh:mm:ss} displays, and allows the user to enter the current time. Backlight (menu): level: {high, low} allows the user to enter the backlight intensity level. Timeout: {00 - 99} allows the user to enter...

  • Page 57

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-20 tm075 – rev. 1.3 remote addr: {32 - 255} allows the user to select the remote port multidrop address. Remote baud: {300, 600, 1200, 2400, 4800, 9600, 19200} allows the user to select the remote port baud rate. 4.2.8 test menu o...

  • Page 58

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-21 carrier: {cw, dual, offset, normal} cw - causes the modulator to output pure carrier. Dual – causes a double sideband output. Offset – causes a single sideband output. Normal – causes the modulator to output no...

  • Page 59

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-22 tm075 – rev. 1.3 panel. All operating software for the terminal mode is contained within the dmd2401 lb/st modem internal control software. A “break” signal on the communications line, pressing “esc” on the terminal or power on...

  • Page 60

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-23 39.Diff encodr:on 49.Base loop :off enter selection number: figure 4-3. Modulator control terminal screen.

  • Page 61

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-24 tm075 – rev. 1.3 1.Main menu if input (dbm) :-31 [3.7 v] sw:f04780-- ver:1.3 2.Control mode:ft panel eb/no :>20.00 intf pres :idr g.703 3.Remote mode :rs-485 uncorrected ser:0 e-5 +5 v mon :+4.9 4.Remote addr :101 corrected ber...

  • Page 62

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-25 1.Main menu if input (dbm) :-31 [3.7 v] sw:f04780-- ver:1.3 2.Control mode:terminal eb/no :>20.00 intf pres :idr g.703 3.Remote mode :rs-485 uncorrected ser:0 e-5 +5 v mon :+4.9 4.Remote addr :101 corrected ber...

  • Page 63

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-26 tm075 – rev. 1.3 1.Main menu if input (dbm :-38 sw:f04780-- ver:1.3 2.Control mode:terminal eb/no :>20.00 intf pres :idr g.703 3.Remote mode :rs-485 uncorrected ser:0 e-5 +5 v mon :+4.9 4.Remote addr :101 corrected ber:0 e-12 +...

  • Page 64

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-27 1.Main menu if input (dbm) :-31 [3.7 v] sw:f04780-- ver:1.3 2.Control mode:ft panel eb/no :>20.00 intf pres :v.35/422/232 3.Remote mode :rs-485 uncorrected ser:0 e-5 +5 v mon :+4.9 4.Remote addr :101 corrected ...

  • Page 65

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-28 tm075 – rev. 1.3 1.Main menu if input (dbm :-38 sw:f04780-- ver:1.3 2.Control mode:ft panel eb/no :>20.00 intf pres :g.703 t1/e1 s 3.Remote mode :rs-485 uncorrected ser:0 e-5 +5 v mon :+4.9 4.Remote addr :101 corrected ber:0 e-...

  • Page 66

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-29 4.4.2 protocol wrapper the radyne commspec is byte-oriented, with the least significant bit (lsb) issued first. Each data byte is conveyed as mark/space information with one mark comprising the stop data. When ...

  • Page 67

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-30 tm075 – rev. 1.3 - the checksum is the modulo 256 sum of all preceding message bytes, excluding the character (1 byte). The checksum determines the presence or absence of errors within the message. In a message block with the f...

  • Page 68

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-31 the frame sequence number (fsn) is included in every message packet, and increments sequentially. When the m&c computer or bus-linked equipment initiates a message, it assigns the fsn as a tag for error control...

  • Page 69

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-32 tm075 – rev. 1.3 table 4-5. Response opcodes response opcode description opcode good message 00h bad parameter ffh bad opcode feh bad checksum fdh command not allowed in local mode fch command not allowed in auto mode fbh bad d...

  • Page 70

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-33 mparm_dropmode_error 0x041a mparm_sctsource_error 0x041b mparm_dropmap_error 0x041d mparm_mode_error 0x0422 mparm_circuitid_error 0x0423 mparm_interfacetype_error 0x0429 mparm_notimplemented_error 0x042d mparm_...

  • Page 71

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-34 tm075 – rev. 1.3 dparm_notimplemented_error 0x0622 dparm_datainvert_error 0x0623 dparm_summaryfault_error 0x0624 dparm_externalexcsource_error 0x0625 dparm_buffersizemsec_error 0x0629 dparm_buffersizebytes_error 0x062a dparm_as...

  • Page 72

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-35 directly-addressed equipment multi-drop override id broadcast (all directly-linked devices) 00 dmd-3000/4000, 4500 or 5000 mod section, dmd15 01 dmd-3000/4000, 4500 or 5000 demod section, dmd15 02 rcu-340 1:1 s...

  • Page 73

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-36 tm075 – rev. 1.3 when radyne equipment is queried for information (query mod, query demod, etc.) it responds by sending back two blocks of data; a non-volatile section (parameters that can be modified by the user) and a volatil...

  • Page 74

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-37 occurred, the rllt causes the equipment to issue the appropriate error message(s) in the pending equipment response frame. To maintain frame synchronization, the iopt keeps track of error-laden packets and pack...

  • Page 75

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-38 tm075 – rev. 1.3 identifies the address of the equipment where the message is to be sent. (1 byte) frame sequence number ensures correct packet acknowledgment and data transfers. (1 byte) this byte identifies the message type a...

  • Page 76

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-39 command mod operating mode 2612h command mod scrambler control 2613h command mod scrambler type 2614h command module ext ref source 2616h command mod terrestrial loopback 2617h command mod baseband loopback 261...

  • Page 77

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-40 tm075 – rev. 1.3 command demod descrambler type 2a0eh command demod spectrum 2a0fh command demod buffer clock 2a11h command demod buffer clock polarity 2a12h command demod insert mode 2a13h command demod operating mode 2a17h co...

  • Page 78

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-41 4.4.13 detailed command descriptions 4.4.13.1 dmd2401 lb/st modulator opcode: query a modulator’s configuration and status query response number of nonvol bytes see paragraph b.6. This is the number of configur...

  • Page 79

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-42 tm075 – rev. 1.3 scrambler type transmit power level differential encoder carrier control carrier selection spectrum operating mode clock control clock polarity sct source alarm 1 mask major alarms alarm 2 mask minor alarms com...

  • Page 80

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-43 tx circuit id tx terrestrial loopback tx baseband loopback reserved reserved data invert framing async baud rate async port type async terrestrial interface type multiprotocol interface card interface type g.70...

  • Page 81

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-44 tm075 – rev. 1.3 bpsk symbol pairing aupc enable aupc eb/no aupc minimum power limit aupc maximum power limit aupc default power level daughter card fault mask transmit mode transmit idr overhead mode idr backward alarm mask 2 ...

  • Page 82

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-45 idr force backward alarm 1 idr force backward alarm 2 idr force backward alarm 3 idr force backward alarm 4 interface type transmit esc audio #1 volume transmit esc audio #2 volume drop mode dropmap drop alarm ...

  • Page 83

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-46 tm075 – rev. 1.3 drop backward alarm mask forcesatback drop edit map bit 5 = terrestrial mfas alarm received (pcm-30 and pcm- 30c only) bit 6 = loss of t4errestrial signaling (reported by dsp) bit 7 = spare bit 0 = backward ala...

  • Page 84

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-47 latched alarm 2 minor alarm latched common alarm online flag +5v voltage +12v voltage -12v voltage temperature reserved remote aupc status remote aupc eb/no bit 0 = terrestrial clock activity detect fault minor...

  • Page 85

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-48 tm075 – rev. 1.3 daughter card fault transmit idr backward alarms control mode drop alarm status drop backward alarm status note: the following byte applies only if an asynchronous interface card, idr or ibs interface card is i...

  • Page 86

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-49 common alarm latched alarm 1 major alarm latched alarm 2 minor alarm latched common alarm online flag +5 v voltage +12 v voltage bit 4 = terrestrial ais (tx data ais detect fault) bit 5 = transmit ext bnc clock...

  • Page 87

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-50 tm075 – rev. 1.3 -12 v voltage tx temperature reserved remote aupc status remote aupc eb/no daughter card fault transmit idr backward alarms control mode drop alarm status -12 v, implied decimal point and minus sign (ex: 118 = ...

  • Page 88

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-51 drop backward alarm status only) bit 3 = terrestrial yellow alarm received (t1 only) bit 4 = terrestrial fas alarm received (e1 only) bit 5 = terrestrial mfas alarm received (pcm-30 and pcm- 30c only) bit 6 = l...

  • Page 89

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-52 tm075 – rev. 1.3 opcode: query a modulator’s latched alarms query response latched alarm 1 major alarm latched alarm 2 minor alarm latched common alarm bit 0 = transmit processor fault bit 1 = transmit output power level fault ...

  • Page 90

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-53 common alarm bit 0 = -12 v alarm bit 1 = +12 v alarm bit 2 = +5 v alarm bit 3 = temperature fault bit 4 = interface fpga fault bit 5 = battery fault bit 6 = ram/rom fault bit 7 = spare (0 = pass, 1 = fail) opco...

  • Page 91

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-54 tm075 – rev. 1.3 scrambler type transmit power level differential encoder carrier control carrier selection spectrum operating mode clock control clock polarity sct source alarm 1 mask major alarm alarm 2 mask minor alarm commo...

  • Page 92

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-55 tx circuit id tx terrestrial loopback tx baseband loopback reserved reserved data invert framing async baud rate async port type async terrestrial interface type multiprotocol interface card bit 6 = ram/rom fau...

  • Page 93

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-56 tm075 – rev. 1.3 interface type g.703 interface type bpsk symbol pairing aupc enable aupc eb/no aupc minimum power limit aupc maximum power limit multiprotocol interface card is installed. If not, set to zero. 0 = v.35,1 = rs-4...

  • Page 94

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-57 aupc default power level daughter card fault mask transmit mode transmit idr overhead mode idr backward alarm mask note: aupc minimum power level level signed value, –50 to –300 (–5.0 to –30 dbm), implied decim...

  • Page 95

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-58 tm075 – rev. 1.3 idr force backward alarm 1 idr force backward alarm 2 idr force backward alarm 3 idr force backward alarm 4 interface type note: the following byte applies only if an idr or ibs interface card is installed, and...

  • Page 96

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-59 transmit esc audio #1 volume transmit esc audio #2 volume parameter is not set to idr mode, these bytes can be set to any valid values, but will be ignored. If g.703 daughter card is installed: 0 = g.703 unbala...

  • Page 97

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-60 tm075 – rev. 1.3 convolutional encoder note: the following command will also turn the carrier off to protect the satellite. 0 = none 1 = viterbi 1/2 rate 3 = viterbi 3/4 rate 5 = viterbi 7/8 rate 7 = sequential 1/2 rate 9 = seq...

  • Page 98

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-61 opcode: command a modulator’s differential encoder differential encoder 0 = off, 1 = on opcode: command a modulator’s carrier control carrier control 0 = off, 1 = on, 2 = auto, 3 = vsat, 4 = rts, 5 = delay opco...

  • Page 99

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-62 tm075 – rev. 1.3 opcode: command a modulator’s scrambler control scrambler control 0 = off, 1 = on opcode: command a modulator’s scrambler type scrambler type 0 = none 1 = ibs scrambler 2 = v.35_iess 3 = v.35_ccitt 4 = v.35_efd...

  • Page 100

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-63 opcode: command a modulator’s cts mode and polarity cts control bit 0 = polarity 0 = normal, 1 = inverted bits 1 and 2 = mode 0 = always on (factory default) 1 = cts reflects the state of the rts input 2 = cts ...

  • Page 101

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-64 tm075 – rev. 1.3 convolutional decoder reed-solomon reed-solomon n reed-solomon k reed-solomon t rs interleaver depth differential decoder descrambler control descrambler type spectrum buffer size buffer clock buffer clock pola...

  • Page 102

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-65 alarm 2 mask alarm 3 mask alarm 4 mask common alarm 1 mask reserved ber measure period rx circuit id rx terrestrial loopback rx baseband loopback rx if loopback bit 0 = buffer underflow bit 1 = buffer overflow ...

  • Page 103

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-66 tm075 – rev. 1.3 reserved data invert async framing async baud rate async port type async terrestrial interface type multiprotocol interface card interface type g.703 interface type bpsk symbol pairing ignore 0 = normal, 1 = in...

  • Page 104

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-67 receive mode t1/e1 frame source receive idr overhead mode receive idr backward alarms mask interface type (if g.703 daughter card installed) receive esc audio #1 volume receive esc audio #2 volume reserved note...

  • Page 105

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-68 tm075 – rev. 1.3 alarm 5 mask insert mode insert map insert alarm mask insert back alarm mask force terrestrial back alarm insert edit map bit 0 = ibs satellite multiframe fault bit 1 = ibs satellite frame fault bit 2 = spare b...

  • Page 106

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-69 alarm 2 alarm 3 alarm 4 common alarm reserved latched alarm 1 latched alarm 2 bit 0 = buffer underflow bit 1 = buffer overflow bit 2 = buffer under 10% bit 3 = buffer over 90% bit 4 = receive fpga fault bit 5 =...

  • Page 107

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-70 tm075 – rev. 1.3 latched alarm 3 latched alarm 4 latched comm. Alarm reserved error counter test 2047 error counter raw ber mantissa corrected ber mantissa eb/no offset frequency test 2047 mantissa raw ber exponent corrected be...

  • Page 108

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-71 exponent test 2047 ber exponent offset frequency sign ber/ebno status buffer percent full input level input level state alarm 5 insert alarms insert back alarm agc voltage byte 3 = unsigned binary value exponen...

  • Page 109

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-72 tm075 – rev. 1.3 alarm 2 alarm 3 alarm 4 common alarm reserved latched alarm 1 bit 6 = reed-solomon uncorrectable word fault bit 7 = receive forced alarm (0 = pass, 1 = fail) bit 0 = buffer underflow bit 1 = buffer overflow bit...

  • Page 110

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-73 latched alarm 2 latched alarm 3 latched alarm 4 latched common alarm reserved error counter test 2047 error counter raw ber mantissa corrected ber mantissa ebno offset frequency test 2047 ber mantissa bit 0 = b...

  • Page 111

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-74 tm075 – rev. 1.3 raw ber exponent corrected ber exponent test 2047 ber exponent offset frequency sign ber/ebno status buffer percent full input level input level state alarm 5 backward alarms latched alarm 5 control mode alarm ...

  • Page 112

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-75 insert alarms insert back alarm agc voltage bit 3 = ibs alarm if ber -03 bit 4 = ibs prompt alarm bit 5 = ibs service alarm bits 6 - 7 = spares bit 0 = frame lock fault bit 1 = multiframe lock fault bit 2 = crc...

  • Page 113

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-76 tm075 – rev. 1.3 latched alarm 4 latched comm. Alarm 1 latched alarm 5 bit 5 = external reference pll lock fault bit 7 = frame sync/multiframe sync fault (0 = pass, 1 = fail) bit 0 = buffer clock activity detect fault bit 1 = e...

  • Page 114

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-77 alarm 4 common alarm 1 alarm 5 bit 3 = viterbi decoder lock fault bit 4 = sequential decoder lock fault bit 5 = rx 2047 test pattern lock fault bit 5 = external reference pll lock fault bit 7 = frame sync fault...

  • Page 115

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-78 tm075 – rev. 1.3 raw ber mantissa corrected ber mantissa ebno raw ber exponent corrected ber exponent ber/ebno status input level input level state agc voltage bytes 1 - 2 = unsigned binary value raw ber bytes 1 - 2 = unsigned ...

  • Page 116

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-79 decoder reed-solomon reed-solomon n reed-solomon k reed-solomon t rs interleaver depth differential decoder descrambler control descrambler type spectrum buffer size buffer clock buffer clock polarity operating...

  • Page 117

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-80 tm075 – rev. 1.3 alarm 2 mask alarm 3 mask alarm 4 mask common alarm 1 mask reserved ber measure period rx circuit id rx terrestrial loopback rx baseband loopback rx if loopback reserved data invert bit 0 = buffer underflow bit...

  • Page 118

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-81 framing async baud rate async port type async terrestrial interface type multiprotocol interface card interface type g.703 interface type bpsk symbol pairing receive mode asynchronous, idr or ibs interface is i...

  • Page 119

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-82 tm075 – rev. 1.3 t1/e1 frame source receive idr overhead mode receive idr backward alarms mask interface type receive esc audio #1 volume receive esc audio #2 volume alarm 5 mask 1 = idr mode 2 = ibs mode 3 = drop & insert mode...

  • Page 120

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-83 insert mode insert map insert alarm mask insert back alarm mask force terrestrial back alarm insert edit map bit 2 = spare bit 3 = ibs alarm if ber -03 bit 4 = ibs prompt alarm bit 5 = ibs service alarm bits 6 ...

  • Page 121

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-84 tm075 – rev. 1.3 14 = trellis 2/3 opcode: command a demodulator’s differential decoder differential decoder 0 = off, 1 = on opcode: command a demodulator’s reed-solomon reed-solomon reed-solomon n reed-solomon k reed-solomon t ...

  • Page 122

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-85 opcode: command a demodulator’s buffer clock polarity buffer clock polarity 0 = normal, 1 = inverted opcode: command a demodulator’s insert mode insert mode 0 = disable 1 = t1-d4 2 = t1-esf 3 = pcm-30 4 = pcm-3...

  • Page 123

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-86 tm075 – rev. 1.3 opcode: command a demodulator’s buffer size buffer size byte 1 - 2 = buffer size in ms or byte 3 - 4 = buffer size in bytes (either ms or bytes must be specified - the other field should be 0xffff) 4.4.13.3 mod...

  • Page 124

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-87 opcode: query time and date query response modulator alarm 1 major alarm modulator alarm 2 minor alarm modulator common alarm demodulator alarm 1 demodulator alarm 2 bit 0 = transmit processor fault bit 1 = tra...

  • Page 125

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-88 tm075 – rev. 1.3 demodulator alarm 3 demodulator alarm 4 demodulator common alarm 1 demodulator alarm 5 control mode bit 0 = if synthesizer lock detect fault bit 1 = rx oversample pll lock detect fault bit 2 = buffer clock pll ...

  • Page 126

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-89 rx fec present interface card type other options bit 4 = tx 8psk encoder present bits 5 - 7 = spare bit 0 = rx viterbi decoder present bit 1 = rx sequential decoder present bit 2 = rx rs decoder present bit 3 =...

  • Page 127

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-90 tm075 – rev. 1.3 opcode: command a module’s external reference frequency map to change new map 0 = drop active map 1 = insert active map 2 = drop edit map 3 = insert edit map 4 –11 = user map #1 through #8 opcode: command clear...

  • Page 128

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-91 rs interleaver depth 4 scrambler control 1 = on scrambler type 2 = v35_iess transmit power level -30.0 dbm differential encoder 1 = on carrier control 0 = off carrier selection 0 = normal spectrum 0 = normal op...

  • Page 129

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-92 tm075 – rev. 1.3 bpsk symbol pairing 0 = normal idr or ibs daughter card fault mask 1 = not masked transmit mode 0 = closed net idr backward alarm mask no alarms masked idr force backward alarm 1 normal idr force backward alarm...

  • Page 130

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-93 reed-solomon n 126 reed-solomon k 112 reed-solomon t 0 rs interleaver depth 4 differential decoder 1 = on descrambler control 1 = enable descrambler type 2 = v35_iess spectrum 0 = normal buffer size 32 msec 256...

  • Page 131

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-94 tm075 – rev. 1.3 async baud rate 3 = 9600 async port type 0 = rs-232.

  • Page 132

    Dmd2401 lb/st l-band satellite modem and odu driver user interfaces tm075 - rev. 1.3 4-95 async terrestrial interface type rs-422 multiprotocol interface type 0 = rs-422 g.703 interface type 0 = g703t1ami bpsk symbol pairing 0 = normal receive mode 0 = closed net t1/e1 frame source 0 = internal > re...

  • Page 133

    User interfaces dmd2401 lb/st l-band satellite modem and odu driver 4-96 tm075 – rev. 1.3 this page is intentionally left blank.

  • Page 134

    Dmd2401 lb/st l-band satellite modem and odu driver electrical interfaces tm075 - rev. 1.3 5-1 section 5 – electrical interfaces 5.0 dmd2401 lb/st connections all modem connections are made to the labeled connectors located on the rear of the unit. The connector definitions and pinout tables are sho...

  • Page 135

    Electrical interfaces dmd2401 lb/st l-band satellite modem and odu driver 5-2 tm075 – rev. 1.3 figure 5-1. Dmd2401 lb/st satellite modem w/ rs-422 data interface 5.2.3 terminal (j3) the terminal port (j3) pinouts are listed below in table 5-2. Table 5-2. Rs-232 terminal port – 9-pin female “d” conne...

  • Page 136

    Dmd2401 lb/st l-band satellite modem and odu driver electrical interfaces tm075 - rev. 1.3 5-3 table 5-3. Rs-485 remote port – 9-pin female “d” connector (j4) pin number signal description direction 1 rs-485 txd-b transmit data b output 5 gnd ground – 6 rs-485 txd-a transmit data a output 8 rs-485 r...

  • Page 137

    Electrical interfaces dmd2401 lb/st l-band satellite modem and odu driver 5-4 tm075 – rev. 1.3 5.2.6 tx if mon (j6) the transimit if monitor port (j6) is used for injecting an external reference frequency into the modem. The dmd2401 lb/st master oscillator is locked to this source. All internally ge...

  • Page 138

    Dmd2401 lb/st l-band satellite modem and odu driver electrical interfaces tm075 - rev. 1.3 5-5 table 5-6. Sync data - 37-pin female connector (j9) pin number signal description direction 4 sd-a send data a (-) input 22 sd-b send data b (+) input 5 st-a send timing a (-) output 23 st-b send timing b ...

  • Page 139

    Electrical interfaces dmd2401 lb/st l-band satellite modem and odu driver 5-6 tm075 – rev. 1.3 5.2.9.1 rs-232 adapter to j9 table 5-7 provides the pinouts if the user wishes to fabricate an adapter from a 25-pin, rs-232 to j9. Table 5-7. 25-pin rs-232 adapter to j9 25-pin connector signal 37-pin con...

  • Page 140

    Dmd2401 lb/st l-band satellite modem and odu driver electrical interfaces tm075 - rev. 1.3 5-7 table 5-8. 25-pin rs-232 adapter to j9 v.35 37-pin connector signal 37-pin connector (j9) signal description direction b gnd 1 gnd signal ground --- c rts 7 rs-a request to send a (-) input d cts 9 cs-a cl...

  • Page 141

    Electrical interfaces dmd2401 lb/st l-band satellite modem and odu driver 5-8 tm075 – rev. 1.3 5.3 dmd2401 lb/st with rs-422/v.35/rs-232/asynchronous data interface the dmd2401 lb/st with rs-422/v.35/rs-232/asynchronous data interface is shown in figure 5-2. Figure 5-2. Dmd2401 lb/st with rs-422/v.3...

  • Page 142

    Dmd2401 lb/st l-band satellite modem and odu driver electrical interfaces tm075 - rev. 1.3 5-9 5.3.6 tx if mon (j6) the transmit if monitor port (j6) is used for injecting an external reference frequency into the modem. The dmd2401 lb/st master oscillator is locked to this source. All internally gen...

  • Page 143

    Electrical interfaces dmd2401 lb/st l-band satellite modem and odu driver 5-10 tm075 – rev. 1.3 table 5-9. Async data port – 9-pin female “d” connector (j10) pin number signal description direction 1 tx-485-b transmit data rs-485 (+) input 2 txd-232 transmit data rs-232 input 3 rxd-232 receive data ...

  • Page 144

    Dmd2401 lb/st l-band satellite modem and odu driver electrical interfaces tm075 - rev. 1.3 5-11 5.4.2 tx dc power (j2) the transmit dc power port (j2) is the 950 – 1750 mhz modulator if output. It may be a mini uhf (shown) or sma connector depending upon customer request. 5.4.3 terminal (j3) the ter...

  • Page 145

    Electrical interfaces dmd2401 lb/st l-band satellite modem and odu driver 5-12 tm075 – rev. 1.3 5.4.8 clock (j8) the external clock port (j8) is used for injecting an external data clock into the modem. The data symbol clocks may then be selected to be locked to this source. The external clock must ...

  • Page 146

    Dmd2401 lb/st l-band satellite modem and odu driver electrical interfaces tm075 - rev. 1.3 5-13 5.4.13 rx dc voltage indicator the receive dc voltage indicator shows if there is dc voltage present at j1. 5.5 dmd2401 lb/st with g.703 data interface with drop and insert the dmd2401 lb/st satellite mod...

  • Page 147

    Electrical interfaces dmd2401 lb/st l-band satellite modem and odu driver 5-14 tm075 – rev. 1.3 5.4.5 alarm (j5) the modem has two form-c dry contact alarm relays onboard and an alarm connector located on the rear panel, the 9-pin male “d” sub connector (j5). The two relays are designated modulator ...

  • Page 148

    Dmd2401 lb/st l-band satellite modem and odu driver electrical interfaces tm075 - rev. 1.3 5-15 table 5-11. Esc alarm interface - 25-pin female “d” (j11) pin number signal description direction 1 gnd ground – 2 escbwo 1no backward alarm out-1no output 3 nc no connection – 4 escbwo 2no backward alarm...

  • Page 149

    Electrical interfaces dmd2401 lb/st l-band satellite modem and odu driver 5-16 tm075 – rev. 1.3 table 5-12. Esc 8k data interface - 15-pin female “d” connector (j12) pin number signal description direction 1 escrxo-b rx octet-b output 2 escrxc-b rx clock-b output 3 escrxd-b rx data-b output 4 nc no ...

  • Page 150

    Dmd2401 lb/st l-band satellite modem and odu driver electrical interfaces tm075 - rev. 1.3 5-17 5.4.16 esc 64k data/audio (j18) j18 serves different purposes depending upon configuration idr mode – 64 k data or voice depending upon front panel selection. Ibs or d&i mode – async port it is a 9-pin fe...

  • Page 151

    Electrical interfaces dmd2401 lb/st l-band satellite modem and odu driver 5-18 tm075 – rev. 1.3 table 5-15. Asynchronous interface - 9-pin female “d” connector (j18) pin number signal description direction 1 tx-485-b transmit data rs485 (+) input 2 txd-232 transmit data rs232 input 3 rxd-232 receive...

  • Page 152

    Dmd2401 lb/st l-band satellite modem and odu driver electrical interfaces tm075 - rev. 1.3 5-19 table 5-16. Async port dip switch settings – rs-485 only table 5-17. Async port dip switch settings – rs-232 or rs-485 1 off 1 on 2 off 2 on 3 off 3 off 4 off 4 off 5 off 5 off 6 on 6 on table 5-18. Async...

  • Page 153

    Electrical interfaces dmd2401 lb/st l-band satellite modem and odu driver 5-20 tm075 – rev. 1.3 table 5-21. As/3771 daughter card resistor location corresponds to switch # r69 1 r70 2 r71 3 r72 4 r73 5 r87 6 off = tbd on = 0Ù resistor.

  • Page 154

    Dmd2401 lb/st l-band satellite modem and odu driver maintenance tm075 - rev. 1.3 6-1 section 6 – maintenance 6.0 periodic maintenance the dmd2401 lb/st modulator requires no periodic field maintenance procedures. The unit contains very few adjustments and most calibration is held in eeprom. Should a...

  • Page 155

    Maintenance dmd2401 lb/st l-band satellite modem and odu driver 6-2 tm075 – rev. 1.3 6.2.1 alarm masks the user has the capability to ‘mask’ individual alarms on the dmd2401 lb/st. When an alarm is masked, the front panel leds and the fault relays do not get asserted, but the alarm will still be dis...

  • Page 156

    Dmd2401 lb/st l-band satellite modem and odu driver maintenance tm075 - rev. 1.3 6-3 table 6-2. Dmd2401 lb/st rx fault matrix note: when ext exc is used as a reference for the mod clock, and activity on the ext exc is lost, the modem switches tx clock reference to scte if it exists, otherwise it swi...

  • Page 157

    Maintenance dmd2401 lb/st l-band satellite modem and odu driver 6-4 tm075 – rev. 1.3 6.3.1 interpreting the matrices the first vertical column in the tables represents the various faults that the modem may identify. The top horizontal column indicates the various actions that the modem will undertak...

  • Page 158

    Dmd2401 lb/st l-band satellite modem and odu driver maintenance tm075 - rev. 1.3 6-5 or greater on terrestrial input fa6 - alarm indication received on terrestrial input alarm --- nfas tso, yellow alarm --- relevant ts’s ad2 - ‘1’ in bit 3 of byte 32 fault detected from satellite (across interface e...

  • Page 159

    Maintenance dmd2401 lb/st l-band satellite modem and odu driver 6-6 tm075 – rev. 1.3 this page is intentionally left blank.

  • Page 160

    Dmd2401 lb/st l-band satellite modem and odu driver technical specifications tm075 - rev. 1.3 7-1 section 7 – technical specifications 7.0 introduction this section defines the technical performance parameters and specifications for the dmd2401 lb/st satellite modem. 7.1 transmit and receive data ra...

  • Page 161

    Technical specifications dmd2401 lb/st l-band satellite modem and odu driver 7-2 tm075 – rev. 1.3 7.3 demodulator/receive specifications frequency: 950 – 1750 mhz frequency resolution: 100 hz carrier acquisition: ± 30 khz input carrier range: -65 to -40 dbm (symbol rate -50 to -30 dbm (symbol rate >...

  • Page 162

    Dmd2401 lb/st l-band satellite modem and odu driver technical specifications tm075 - rev. 1.3 7-3 7.6 monitor and control all operating parameters can be monitored and controlled via the front panel display/keypad, or the rs-485 or rs-232 serial control channel in either terminal or command modes. T...

  • Page 163

    Technical specifications dmd2401 lb/st l-band satellite modem and odu driver 7-4 tm075 – rev. 1.3 7.10 bit error rate (ber) curves figures 7-1 through 7-5 represent the ber curves for the dmd2401 lb/st. Figure 7-1. Ibs ber curve.

  • Page 164

    Dmd2401 lb/st l-band satellite modem and odu driver technical specifications tm075 - rev. 1.3 7-5 figure 7-2. Idr ber curve figure 7-3. Reed-solomon (idr) ber curve.

  • Page 165

    Technical specifications dmd2401 lb/st l-band satellite modem and odu driver 7-6 tm075 – rev. 1.3 figure 4-4. Sequential 384 kbps ber curve figure 7-5. Trellis 8psk ber curve.

  • Page 166

    Dmd2401 lb/st l-band satellite modem and odu driver technical specifications tm075 - rev. 1.3 7-7 7.11 agc curve figure 6-6 represents the agc curve for the dmd2401 lb/st. Figure 7-6. Dmd2401 lb/st agc curve.

  • Page 167

    Technical specifications dmd2401 lb/st l-band satellite modem and odu driver 7-8 tm075 – rev. 1.3 this page is intentionally left blank.

  • Page 168

    Dmd2401 lb/st l-band satellite modem and odu driver appendices tm075 - rev. 1.3 8-1 section 8 – appendices appendix a – reed-solomon codes n valid values for k 2 1 3 2 4 2, 3 5 3, 4 6 3, 4, 5 7 4, 5, 6 8 4, 6, 7 9 5, 6, 7, 8 10 5, 7, 8, 9 11 6, 8, 9, 10 12 6, 8, 9, 10, 11 13 7, 9, 10, 11, 12 14 7, 1...

  • Page 169

    Appendices dmd2401 lb/st l-band satellite modem and odu driver 8-2 tm075 - rev. 1.3 27 14, 18, 21, 22, 23, 24, 25, 26 28 14, 19, 21, 23, 24, 25, 26, 27 29 15, 20, 22, 24, 25, 26, 27, 28 30 15, 20, 23, 24, 25, 26, 27, 28, 29 31 16, 21, 24, 25, 26, 27, 28, 29, 30 32 16, 22, 24, 26, 27, 28, 29, 30, 31 ...

  • Page 170

    Dmd2401 lb/st l-band satellite modem and odu driver appendices tm075 - rev. 1.3 8-3 56 38, 42, 45, 47, 48, 49, 50, 51, 52, 53, 54, 55 57 38, 43, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56 58 39, 44, 47, 49, 50, 51, 52, 53, 54, 55, 56, 57 59 40, 45, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58 60 40, 45, 48, 5...

  • Page 171

    Appendices dmd2401 lb/st l-band satellite modem and odu driver 8-4 tm075 - rev. 1.3 84 68, 70, 72, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83 85 68, 71, 73, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84 86 69, 72, 74, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85 87 70, 73, 75, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86 ...

  • Page 172

    Dmd2401 lb/st l-band satellite modem and odu driver appendices tm075 - rev. 1.3 8-5 113 95, 97, 99, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112 114 95, 98, 100, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113 115 96, 99, 101, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112...

  • Page 173

    Appendices dmd2401 lb/st l-band satellite modem and odu driver 8-6 tm075 - rev. 1.3 141 121, 124, 126, 127, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140 142 122, 125, 127, 128, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141 143 123, 126, 128, 129, 130, 132, 133, 134, 135, 1...

  • Page 174

    Dmd2401 lb/st l-band satellite modem and odu driver appendices tm075 - rev. 1.3 8-7 170 152, 153, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169 171 152, 154, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170 172 153, 155, 157, 158, 159, 160, 161, 1...

  • Page 175

    Appendices dmd2401 lb/st l-band satellite modem and odu driver 8-8 tm075 - rev. 1.3 198 179, 180, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197 199 180, 181, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198 200 180, 182, 184, 185, 186, 1...

  • Page 176

    Dmd2401 lb/st l-band satellite modem and odu driver appendices tm075 - rev. 1.3 8-9 226 206, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225 227 207, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226 228 208, 209, 211, 2...

  • Page 177

    Appendices dmd2401 lb/st l-band satellite modem and odu driver 8-10 tm075 - rev. 1.3 248 228, 229, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247 249 229, 230, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248 250 230, 231, 233, ...

  • Page 178

    Dmd2401 lb/st l-band satellite modem and odu driver appendices tm075 - rev. 1.3 8-11 appendix b - carrier control b.0 states carrier off: modulator output disabled carrier on: modulator output enabled (refer to section b.1, item 1) carrier auto: modulator output enabled (refer to section b.1, item 2...

  • Page 179

    Appendices dmd2401 lb/st l-band satellite modem and odu driver 8-12 tm075 - rev. 1.3 this page is intentionally left blank.