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Radyne DMD2401 IBS Operation Manual

Summary of DMD2401 IBS

  • Page 1

    Dmd2401/dmd2401l/ dmd2401 ibs/idr satellite modem installation and operation manual tm065 - rev. 3.3 may, 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 the ...

  • Page 3

    Latest software revision confirmation when new features are added to radyne comstream corporation equipment, the control parameters are appended to the end of the non-volatile section of the remote communications specification, and status of the features, if any, are added at the end of the volatile...

  • Page 4

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem warranty policy tm065 - rev. 3.3 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 and...

  • Page 5

    Warranty policy dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem tm065 – rev. 3.3 iv in no event shall radyne comstream corporation be liable for incidental, consequential, special or resulting loss or damage of any kind howsoever caused. Radyne comstream corporation’s liability for damages shall no...

  • Page 6

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem record of revisions tm065 - rev. 3.3 v dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem installation and operation manual tm065 – record of revisions radyne comstream corporation is constantly improving its products and therefore the information in th...

  • Page 7

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem tm065 – rev. 3.3 vi this page is intentionally left blank.

  • Page 8

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem table of contents tm065 - rev. 3.3 vii table of contents section 1 – introduction 1.0 description _____________________________________________________ 1-1 1.1 dmd2401 available options ________________________________________ 1-2 1.1.1 reed-solomon c...

  • Page 9

    Table of contents dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem viii tm065 - rev. 3.3 3.7 asynchronous multiplexer mode ____________________________________ 3-6 3.8 esc backward alarms ____________________________________________ 3-6 3.8.1 to disable the esc backward alarms_______________________...

  • Page 10

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem table of contents tm065 - rev. 3.3 ix 4.3 terminal mode control ___________________________________________ 4-23 4.3.1 modem terminal mode control ___________________________________ 4-24 4.3.2 modem setup for terminal mode____________________________...

  • Page 11

    Table of contents dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem x tm065 - rev. 3.3 5.3.7 remote (j7)__________________________________________________ 5-4 5.2.9 data interface (j9) __________________________________________ 5-4 5.2.9.1 rs-232 adapter to j9 ________________________________________...

  • Page 12

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem table of contents tm065 - rev. 3.3 xi 5.6.9 sd (j9) ______________________________________________________ 5-17 5.6.10 ddo (j10) __________________________________________________ 5-17 5.6.11 idi (j11) _________________________________________________...

  • Page 13

    Table of contents dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem xii tm065 - rev. 3.3 5.8.12 rd (j12) ____________________________________________________ 5-30 5.8.13 esc alarms (j14) ___________________________________________ 5-30 5.8.14 esc 8k data (j15)_________________________________________...

  • Page 14

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem table of contents tm065 - rev. 3.3 xiii section 8 – appendices appendix a – reed-solomon codes _____________________________________ 8-1 appendix b - carrier control __________________________________________ 8-11 b.0 states __________________________...

  • Page 16

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem introduction tm065 - rev. 3.3 1-1 section 1 – introduction 1.0 description the radyne corporation dmd2401 and dmd2401l satellite modems (figure 1-1) are microprocessor-controlled binary phase shift keyed (bpsk), quadrature phase shift keyed (qpsk), of...

  • Page 17

    Introduction dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 1-2 tm065 – rev. 3.3 the dmd2401 can track and acquire a carrier over a programmable range of ±1 khz to ±42 khz. Acquisition times of less than 10 seconds are typical at data rates of 64 kbps over a range of ± 25 khz. To facilitate link t...

  • Page 18

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem introduction tm065 - rev. 3.3 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 examples o...

  • Page 19

    Introduction dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 1-4 tm065 – rev. 3.3 this page is intentionally left blank.

  • Page 20

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem installation tm065 - rev. 3.3 2-1 section 2 – installation 2.0 installation requirements the dmd2401 can be installed within any standard 19-inch equipment cabinet or rack, and requires 1 ru mounting space (1.75 inches) vertically and 21 inches of dep...

  • Page 21

    Installation dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 2-2 tm065 – rev. 3.3 2.3 mounting considerations when mounted in an equipment rack, adequate ventilation must be provided. The ambient temperature in the rack should be between 10 ° and 35 ° c, and held constant for best equipment operati...

  • Page 22

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem installation tm065 - rev. 3.3 2-3 terminal setup: baud rate: 19.2 k (can be changed via front panel) data bits: 8 parity: no parity (fixed) stop bits: 1 stop bit.

  • Page 23

    Installation dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 2-4 tm065 – rev. 3.3 this page is intentionally left blank.

  • Page 24

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem operation tm065 - rev. 3.3 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 is...

  • Page 25

    Operation dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 3-2 tm065 – rev. 3.3 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 many r...

  • Page 26

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem operation tm065 - rev. 3.3 3-3 3.3 dmd2401 initial configuration check the dmd2401 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 se...

  • Page 27

    Operation dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 3-4 tm065 – rev. 3.3 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 power ...

  • Page 28

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem operation tm065 - rev. 3.3 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 57...

  • Page 29

    Operation dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 3-6 tm065 – rev. 3.3 3.6 standard ibs mode in the first or “normal” mode, all bit assignments are per the ibs standard. The bits of overhead housekeeping byte 32 are implemented as shown below: bit 1 es to es data channel this bit is routed ...

  • Page 30

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem operation tm065 - rev. 3.3 3-7 the user can connect whichever systems on the earth stations that they desire to these backward alarms relays as long as they will supply ground to the backward alarm relay input in the “no fault” condition and the groun...

  • Page 31

    Operation dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 3-8 tm065 – rev. 3.3 the following steps should be followed when setting up drop & insert: 1. Select the appropriate interface type: newer modem: b.T1.Ami balanced t1 (1.544 mb) ami coding b.T1.B8zs balanced, t1 (1.544 mb), b8zs coding, u.E1...

  • Page 32

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem operation tm065 - rev. 3.3 3-9 3.10.2 mode the operational mode of the modem often determines which additional menus and displays are available for use by the operator. The d&i mode-specific menus will not be displayed unless the operational mode of t...

  • Page 33

    Operation dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 3-10 tm065 – rev. 3.3 number of slots (n) d&i data rates 1 64,000 2 128,000 3 192,000 4 256,000 5 320,000 6 384,000 8 512,000 10 640,000 12 768,000 15 960,000 16 1,024,000 20 1,280,000 24 1,536,000 30 1,920,000 (valid with e1 interface only)...

  • Page 34

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem operation tm065 - rev. 3.3 3-11 when the insert terrestrial frame source selection is set to external, the received satellite data will be clocked out of the doppler buffer based upon the clock recovered from the insert data input. Therefore, the buff...

  • Page 35

    Operation dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 3-12 tm065 – rev. 3.3 3.11 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 not ...

  • Page 36

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem operation tm065 - rev. 3.3 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 procedu...

  • Page 37

    Operation dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 3-14 tm065 – rev. 3.3 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 req...

  • Page 38

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem operation tm065 - rev. 3.3 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 39

    Operation dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 3-16 tm065 – rev. 3.3 figure 3-9. If loopback.

  • Page 40

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-1 section 4 – user interfaces 4.0 user interfaces there are three user interfaces available for the dmd2401. These are: 1. Front panel 2. Remote port 3. Terminal 4.1 front panel user interface the front panel of the ...

  • Page 41

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-2 tm065 – rev. 3.3 4.1.2 front panel led indicators eight leds on the dmd2401 front panel (refer to table 4-2) indicate the status of the dmd2401’s operation. The led colors maintain a consistent meaning. Green signifies that the ind...

  • Page 42

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-3 4.1.4 parameter setup the four arrow keys ( n ), ( p ), ( o ), ( m ), to the right of the lcd display are used to navigate the menu tree and select the parameter to be set. After arriving at a parameter that needs ...

  • Page 43

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-4 tm065 – rev. 3.3 4.2 front panel control screen menus the dmd2401 front panel control screens are broken down into sections under several main menus. 4.2.1 main menus modulator demodulator interface monitor alarms system test 4.2.2...

  • Page 44

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-5 d&i mode: (iess-308) data rates: n x 64 framing type: 1/15 (ibs) scrambler type: ibs spectrum mask: intelsat closed net: all possible combinations allowed mod if (menu): freq (mhz): {50 – 90 mhz, 100 – 180 mhz, or ...

  • Page 45

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-6 tm065 – rev. 3.3 data invert: {normal, inverted} allows the user to invert the data. Idr oh type: {voice, 64kbit} available with 96 kbps (idr) framing. Symbol pair: {normal, swapped} available in bpsk modulation. Reedsolomon (menu)...

  • Page 46

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-7 d&i mode: (iess-308) data rates: n x 64 framing type: 1/15 (ibs) scrambler type: ibs spectrum mask: intelsat closed net: all possible combinations allowed demod if (menu): freq (mhz): {50 – 90 mhz, 100 – 180 mhz, o...

  • Page 47

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-8 tm065 – rev. 3.3 allows the user to invert the data..

  • Page 48

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-9 idr oh type: {voice, 64kbit} available with 96 kbps (idr) framing. Symbol pair: {normal, swapped} available in bpsk modulation. Reedsolomon (menu): dmdrs enable: {enable disable} enables or disables the reed-solomo...

  • Page 49

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-10 tm065 – rev. 3.3 txansync port: {rs-485, rs-232} allows the user to select the transmit async port type. Tx g703 intf: {u.E1, b.E1, b.T1.B8zs, b.T1.Ami} allows the user to select the transmit g.703 interface type. Tx univ intf: {v...

  • Page 50

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-11 rx d&i (menu): insert mode: {enable, disable} e1 mode: pcm30, pcm30c, pcm31, pcm31c. T1 mode: t1-d4, t1-esf, t1-d4-s, t1-esf-s 4.2.5 monitor menu options and parameters level: estimated receive signal (in dbm) as ...

  • Page 51

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-12 tm065 – rev. 3.3 ber exponent: {3 – 9} sets the time base for the channel error rate measurement, used to estimate eb/no. 4.2.6 alarms menu options and parameters modem alarms (menu): active alrms (menu): major tx (menu): status e...

  • Page 52

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-13 sigloss mask: {pass/fail, no/yes} indicates that the demodulator is unable to lock to a signal. Frmsync mask: {pass/fail, no/yes} indicates that the framing unit is unable to find the expected framing pattern. Mfr...

  • Page 53

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-14 tm065 – rev. 3.3 rs fifo mask: {pass/fail, no/yes} indicates the status of the tx reed-solomon fifo. Tx cal mask: {pass/fail, no/yes} indicates that the modem has been calibrated for the output power level. Minor rx (menu): bufufl...

  • Page 54

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-15 uncword mask: {pass/fail, no/yes} indicates the status of the reed-solomon uncoded word fault. Ibs alarms (menu): prompt mask: {pass/fail, no/yes} indicates that a prompt maintenance alarm is generated as defined ...

  • Page 55

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-16 tm065 – rev. 3.3 latched alrm (menu): major tx (menu): txproc: {pass/fail} tx processor fault. Indicates a hardware transmit dsp failure within the modem. Txpower: {pass/fail} indicates that the modem tx output power is within the...

  • Page 56

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-17 buffpll: {pass/fail} indicates that the buffer clock pll is not locked. This alarm will flash ‘on’ during certain modem parameter changes. Rxlevel: {pass/fail} this alarm indicates that the receive automatic gain ...

  • Page 57

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-18 tm065 – rev. 3.3 vitlock: {pass/fail} indicates that the viterbi decoder is not locked. Seqlock: {pass/fail} indicates that the sequential decoder is not locked. Rx activity (menu): buf clk mask: {pass/fail, no/yes} indicates that...

  • Page 58

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-19 +12volt mask: {pass/fail, no/yes} indicates the power supply voltage is out of range. +5volt mask: {pass/fail, no/yes} indicates the power supply voltage is out of range. Temp mask: {pass/fail, no/yes} fail indica...

  • Page 59

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-20 tm065 – rev. 3.3 4.2.7 system menu options and parameters control mode: {front panel, terminal, computer} allows the user to select the active control source. General (menu): date: {yy mmm dd} displays, and allows the user to ente...

  • Page 60

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-21.

  • Page 61

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-22 tm065 – rev. 3.3 daughtercpld: {f0xxxxnn, not present} indicates whether the firmware is present. M&c (menu): term baud: {300 - 115200} indicates the terminal baud rate. Emulation: {vt100, adds-vp, wyse 50} allows the user to sele...

  • Page 62

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-23 loopbacks: {tx terr, rx terr, tx/rx terr, tx bb, rx bb, tx/rx bb, if} terrestrial loopback is performed at the terrestrial interface. Tx terr – sends tx terrestrial data to rx data out. Rx terr – (distant loop) se...

  • Page 63

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-24 tm065 – rev. 3.3 4.3.1 modem terminal mode control the modem can be interactively monitored and controlled in the terminal mode, with a full screen presentation of current settings and status. Programming is accomplished by select...

  • Page 64

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-25 ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ main menu ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ º º º 1 modulator controls º º 2 demodulator controls º º 3 event buffer º º 4 alarm/status º º 5 latched alarms º º 6 interface menu º º º º º º º º º º º º ÈÍÍÍÍÍÍÍÍÍ...

  • Page 65

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-26 tm065 – rev. 3.3 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:0 e...

  • Page 66

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-27 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:0 e...

  • Page 67

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-28 tm065 – rev. 3.3 1.Main menu if input (dbm) :-61 [.9 v] sw:f04780-- ver:.2 2.Control mode:terminal eb/no :no sync intf pres :idr g.703 3.Remote mode :rs-485 uncorrected ser:no sync +5 v mon :+4.8 4.Remote addr :32 corrected ber:no...

  • Page 68

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-29 1.Main menu if input (dbm) :-40 [2.9 v] sw:f04780-- ver:.2 2.Control mode:terminal eb/no :>20.00 intf pres :d&i g.703 3.Remote mode :rs-485 uncorrected ser:0 e-5 +5 v mon :+4.8 4.Remote addr :32 corrected ber:0 e-...

  • Page 69

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-30 tm065 – rev. 3.3 1.Main menu if input (dbm) :-25 [4.2 v] sw:f04780-- ver:.2 2.Control mode:terminal 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 :32 corrected ber:0...

  • Page 70

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-31 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 :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...

  • Page 71

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-32 tm065 – rev. 3.3 1.Main menu if input (dbm) :-61 [1.0 v] sw:f04780-- ver:.2 2.Control mode:terminal eb/no :no sync intf pres :universal 3.Remote mode :rs-485 uncorrected ser:no sync +5 v mon :+4.8 4.Remote addr :32 corrected ber:n...

  • Page 72

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-33 1.Main menu if input (dbm) :-61 [.9 v] sw:f04780-- ver:.2 2.Control mode:terminal eb/no :no sync intf pres :universal 3.Remote mode :rs-485 uncorrected ser:2.55e-1 +5 v mon :+4.8 4.Remote addr :32 corrected ber:7....

  • Page 73

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-34 tm065 – rev. 3.3 1.Main menu if input (dbm) :-61 [1.0 v] sw:f04780-- ver:.2 2.Control mode:terminal eb/no :no sync intf pres :idr v.35/422 3.Remote mode :rs-485 uncorrected ser:no sync +5 v mon :+4.8 4.Remote addr :32 corrected be...

  • Page 74

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-35 1.Main menu if input (dbm) :-54 [1.6 v] sw:f04780-- ver:.2 2.Control mode:ft panel eb/no :no sync intf pres :idr v.35/422 3.Remote mode :rs-485 uncorrected ser:no sync +5 v mon :+4.8 4.Remote addr :32 corrected be...

  • Page 75

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-36 tm065 – rev. 3.3 s1 s2 b 0 b 1 b 2 b 3 b 4 b 5 b 6 b 7 s1 s2, etc. The stop bit, s1 is a mark. Data flow remains in a hold mode until s1 is replaced by a space. If s1 is followed by a space, the space character is considered a sta...

  • Page 76

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-37 table 4-4. Checksum calculation example byte field data content running checksum 02h = 00000010b 00000010b f0h = 11110000b 11110010b 2ah = 00101010b 00011100b 09h = 00001001b 00100101b 03h = 00000011b 00101000b (b...

  • Page 77

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-38 tm065 – rev. 3.3 if the command packet is received at its intended destination but the response message (acknowledgment) is lost, then the message originator (usually the m&c computer) re-transmits the original command packet with...

  • Page 78

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-39 the following response error codes are specific to the dmd2401: response opcode description opcode mparm_frequency_error 0x0401 mparm_datarate_error 0x0404 mparm_excclock_error 0x0405 mparm_extreference_error 0x04...

  • Page 79

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-40 tm065 – rev. 3.3 dparm_frequency_error 0x0601 dparm_datarate_error 0x0603 dparm_sweepboundary_error 0x0604 dparm_levellimit_error 0x0605 dparm_demodulationtype_error 0x0608 dparm_convdecoder_error 0x0609 dparm_reedsolomon_error 0x...

  • Page 80

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-41 devices of the same type are assigned in a direct-linked (“single-thread”) configuration accessible to the m&c computer directly. For example, if two dmd2401 modems with different addresses (destination ids) are l...

  • Page 81

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-42 tm065 – rev. 3.3 note that multi-drop override ids 01 or 02 can be used interchangeably to broadcast a message to a dmd3000/4000 modem, or to a dmd4500/5000, or to a dmd15 modem. Radyne comstream corporation recommends that the mu...

  • Page 82

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-43 each piece of supported equipment on the control bus executes a radyne link level task (rllt) in accordance with its internal hardware and fixed program structure. In a flow control example, the rllt issues an int...

  • Page 83

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-44 tm065 – rev. 3.3 if an acknowledgment (response) packet or a nak packet is lost, corrupted, or not issued due to an error and is thereby not returned to the sender, the sender re-transmits the original information packet; but with...

  • Page 84

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-45 4.4.10 modulator command set command opcode query mod all 2400h query mod latched alarms 2405h query mod current alarms 2408h query mod status 240bh query mod rts level 2433h command mod all 2601h command mod freq...

  • Page 85

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-46 tm065 – rev. 3.3 command mod carrier delay 2637h 4.4.11 demodulator command set command opcode query demodulator all 2401h query demod latched alarms 2406h query demod current alarms 2409h query demod status 240ch query demod eb/n...

  • Page 86

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-47 4.4.12 module command set rllp command opcode query module identification 2403h query module current alarms 240ah query module time 240eh query module date 240fh query module time and date 2410h query module optio...

  • Page 87

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-48 tm065 – rev. 3.3 convolutional encoder reed-solomon reed-solomon n reed-solomon k reed-solomon t rs interleaver depth scrambler control scrambler type transmit power level differential encoder carrier control carrier selection spe...

  • Page 88

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-49 alarm 1 mask major alarms alarm 2 mask minor alarms common alarm 1 mask tx circuit id tx terrestrial loopback tx baseband loopback reserved reserved data invert framing bit 0 = transmit processor fault bit 1 = tra...

  • Page 89

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-50 tm065 – rev. 3.3 async baud rate async port type async terrestrial interface type multiprotocol interface card interface type g.703 interface type bpsk symbol pairing aupc enable aupc eb/no aupc minimum power limit aupc maximum po...

  • Page 90

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-51 daughter card fault mask transmit mode transmit idr overhead mode idr backward alarm mask idr force backward alarm 1 idr force backward alarm 2 idr force backward alarm 3 idr force backward alarm 4 interface type ...

  • Page 91

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-52 tm065 – rev. 3.3 transmit esc audio #2 volume drop mode dropmap drop alarm status mask drop backward alarm mask forcesatback drop edit map -20 to +10, signed binary value (in db) 0 = disable 1 = t1-d4 2 = t1-esf 3 = pcm-30 4 = pcm...

  • Page 92

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-53 latched alarm 1 major alarm latched alarm 2 minor alarm latched common alarm online flag +5v voltage +12v voltage -12v voltage temperature reserved bit 1 = +12 v alarm bit 2 = +5 v alarm bit 3 = temperature fault ...

  • Page 93

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-54 tm065 – rev. 3.3 remote aupc status remote aupc eb/no daughter card fault transmit idr backward alarms control mode drop alarm status drop backward alarm status bit 0 = aupc communication error bits 1-2 = eb/no status 0 = eb/no is...

  • Page 94

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-55 alarm 2 minor alarm common alarm latched alarm 1 major alarm latched alarm 2 minor alarm latched common alarm online flag +5 v voltage bit 6 = transmit forced alarm bit 7 = external reference pll lock fault (0 = p...

  • Page 95

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-56 tm065 – rev. 3.3 +12 v voltage -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 (ex: 121 = +12....

  • Page 96

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-57 drop backward alarm status 30c only) bit 6 = loss of t4errestrial signaling (reported by dsp) bit 7 = spare bit 0 = backward alarm received from drop terrestrial bits 2 – 7 = spares opcode: query a modulator’s lat...

  • Page 97

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-58 tm065 – rev. 3.3 common alarm bit 5 = transmit ext bnc clock activity detect fault bit 6 = transmit reed-solomon fault bit 7 = tx buc fault, lbst only (0 = pass, 1 = fail) bit 0 = -12 v alarm bit 1 = +12 v alarm bit 2 = +5 v alarm...

  • Page 98

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-59 scrambler control 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 mi...

  • Page 99

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-60 tm065 – rev. 3.3 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 bit 6 =...

  • Page 100

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-61 g.703 interface type bpsk symbol pairing aupc enable aupc eb/no aupc minimum power limit aupc maximum power limit 0 = g703t1ami 1 = g703t1b8zs 2 = g703be1 3 = g703ue1 note: the following byte applies to all dmd240...

  • Page 101

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-62 tm065 – rev. 3.3 aupc default power level daughter card fault mask transmit mode transmit idr overhead mode idr backward alarm mask idr force backward alarm 1 note: aupc minimum power level level signed value, –50 dbm to –300 (–5....

  • Page 102

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-63 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 the transmit mode parameter i...

  • Page 103

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-64 tm065 – rev. 3.3 transmit esc audio #1 volume transmit esc audio #2 volume interface card is installed, and the transmit mode parameter is set to idr mode. If an idr or ibs interface card is not installed, set to zero. If an idr o...

  • Page 104

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-65 encoder opcode: command a modulator’s carrier control carrier control 0 = off, 1 = on, 2 = auto, 3 = vsat, 4 = rts opcode: command a modulator’s carrier selection carrier selection 0 = normal, 1 = cw, 2 = dual, 3 ...

  • Page 105

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-66 tm065 – rev. 3.3 opcode: command a modulator’s reed-solomon encoder characteristics reed-solomon reed-solomon n reed-solomon k reed-solomon t rs interleaver depth 0 = disable, 1 = enable unsigned binary unsigned binary note: alway...

  • Page 106

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-67 opcode: command a modulator’s async terrestrial interface type note: command is only valid if an asynchronous interface card is installed. If not, this command is ignored. Note: the following command will also tur...

  • Page 107

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-68 tm065 – rev. 3.3 configuration bytes frequency data rate sweep boundary external reference freq. Reference source input level limit demodulation type convolutional decoder reed-solomon reed-solomon n reed-solomon k reed-solomon t ...

  • Page 108

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-69 buffer size buffer clock buffer clock polarity operating mode alarm 1 mask alarm 2 mask alarm 3 mask alarm 4 mask common alarm 1 mask reserved byte 1 - 2 = buffer size in ms byte 3 - 4 = buffer size in bytes 0 = e...

  • Page 109

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-70 tm065 – rev. 3.3 ber measure period rx circuit id rx terrestrial loopback rx baseband loopback rx if loopback reserved data invert async framing async baud rate async port type async terrestrial interface type multiprotocol interf...

  • Page 110

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-71 g.703 interface type bpsk symbol pairing receive mode t1/e1 frame source receive idr overhead mode receive idr backward alarms mask interface type (if g.703 daughter card installed) 0 = g703t1ami 1 = g703t1b8zs 2 ...

  • Page 111

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-72 tm065 – rev. 3.3 receive esc audio #1 volume receive esc audio #2 volume reserved alarm 5 mask insert mode insert map insert alarm mask insert back alarm mask force terrestrial back alarm insert edit map idr mode. If not, ignore -...

  • Page 112

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-73 alarm 2 alarm 3 alarm 4 common alarm reserved latched alarm 1 latched alarm 2 bit 4 = reed-solomon sync fault bit 5 = reed-solomon excessive errors fault bit 6 = reed-solomon uncorrectable word fault bit 7 = recei...

  • Page 113

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-74 tm065 – rev. 3.3 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 ber e...

  • Page 114

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-75 exponent offset frequency sign ber/ebno status buffer percent full input level input level state alarm 5 insert alarms insert back alarm agc voltage 0 = offset frequency pos, 1 = offset frequency neg bit 0 = raw b...

  • Page 115

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-76 tm065 – rev. 3.3 alarm 2 alarm 3 alarm 4 common alarm reserved latched alarm 1 latched alarm 2 latched alarm 3 bit 0 = buffer underflow bit 1 = buffer overflow bit 2 = buffer under 10% bit 3 = buffer over 90% bit 4 = receive fpga ...

  • Page 116

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-77 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 raw ber exponent corrected ber exponent test...

  • Page 117

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-78 tm065 – rev. 3.3 ber/ebno status buffer percent full input level input level state alarm 5 backward alarms latched alarm 5 control mode alarm 5 insert alarms bit 0 = raw ber and corrected ber status (1 = valid) bit 1 = test 2047 b...

  • Page 118

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-79 insert back alarm agc voltage bit 7 = crc calculation fault bit 0 = backward alarm received from satellite bits 2 – 7 = spares in hex, decimal point implied. Opcode: query a demodulator’s latched alarms query resp...

  • Page 119

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-80 tm065 – rev. 3.3 bit 2 = spare bit 3 = ibs ber alarm bit 3 = ibs prompt alarm bit 5 = ibs service alarm bits 6 -7 = spares (0 = pass, 1 = fail) opcode: query a demodulator’s current alarms query response alarm 1 alarm 2 alarm 3 al...

  • Page 120

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-81 bit 2 = spare bit 3 = ibs ber alarm bit 3 = ibs prompt alarm bit 5 = ibs service alarm bits 6 -7 = spares (0 = pass, 1 = fail) opcode: query a demodulator’s eb/no, ber, level, and agc voltage query response raw be...

  • Page 121

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-82 tm065 – rev. 3.3 source input level limit demodulation type convolutional decoder reed-solomon reed-solomon n reed-solomon k reed-solomon t rs interleaver depth differential decoder descrambler control descrambler type spectrum bu...

  • Page 122

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-83 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 bit 1 = signal lock fault bit 2 = receive satellite ais fault bit 3...

  • Page 123

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-84 tm065 – rev. 3.3 rx if loopback reserved data invert framing async baud rate async port type async terrestrial interface type multiprotocol interface card interface type g.703 interface type bpsk symbol pairing 0 = disabled, 1 = e...

  • Page 124

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-85 receive mode 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 interface card is installed. If not, set to zero. 0...

  • Page 125

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-86 tm065 – rev. 3.3 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 bit ...

  • Page 126

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-87 opcode: command a demodulator’s convolutional decoder convolutional decoder 0 = none 1 = viterbi 1/2 rate 3 = viterbi 3/4 rate 5 = viterbi 7/8 rate 7 = sequential 1/2 rate 9 = sequential 3/4 rate 11 = sequential 7...

  • Page 127

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-88 tm065 – rev. 3.3 2 = t1-esf 3 = pcm-30 4 = pcm-30c 5 = pcm-31 6 = pcm-31c 7 = t1-slc96 opcode: command a demodulator’s operating mode operating mode 0 = stop, 1 = 2047 test.

  • Page 128

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-89 opcode: command a demodulator’s ber exponent ber measure period number of bits in measurement period in powers of ten (ex: 6 = 10 6 bits) opcode: command a demodulator’s terrestrial loopback rx terrestrial loopbac...

  • Page 129

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-90 tm065 – rev. 3.3 opcode: query date query response year month day 0 – 99 0 – 11 0 – 30 opcode: query time and date query response year month day hour minute second 0 – 99 0 – 11 0 – 30 0 – 23 0 – 59 0 – 59 opcode: query time and d...

  • Page 130

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-91 alarm 1 demodulator alarm 2 demodulator alarm 3 demodulator alarm 4 demodulator common alarm 1 demodulator alarm 5 control mode bit 1 = signal lock fault bit 2 = receive satellite ais fault bit 3 = rx agc/input le...

  • Page 131

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-92 tm065 – rev. 3.3 opcode: query a module’s installed options query response frequency band duplex tx fec present rx fec present interface card type other options bits 0 - 3 = tx band bits 4 - 7 = rx band (0 = 70 mhz, 1 = 140 mhz, 2...

  • Page 132

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-93 opcode: command a module’s external reference frequency external ref. Freq. Unsigned binary value in hz.

  • Page 133

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-94 tm065 – rev. 3.3 opcode: command drop and insert map copy from map to map 0 = drop active map 1 = insert active map 2 = drop edit map 3 = insert edit map 4 –11 = user map #1 through #8 12 – 19 = rom maps #1 through #8 0 = drop act...

  • Page 134

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-95 4.4.13.4 default values modulator opcode: command a modulator’s configuration frequency 70,000,000 hz reserved data rate 2,048,000 bps exc clock 2,048,000 hz freq. Reference source 0 = internal modulation type 0 =...

  • Page 135

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-96 tm065 – rev. 3.3 loopback tx baseband loopback 0 = disabled reserved reserved data invert 0 = normal async mode 0 = async off async baud rate 3 = 9600 async port type 0 = rs-232 async terrestrial interface type 0 = rs-422 multipro...

  • Page 136

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-97 4.4.13.5 default values demodulator opcode: command a demodulator’s configuration frequency 70,000,000 hz data rate 2,048,000 bps sweep boundary 25 khz external reference 30,000,000 hz ext reference source 0 = int...

  • Page 137

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-98 tm065 – rev. 3.3 ber measure period 10 5 bits rx circuit id 24 ascii spaces rx terrestrial loopback 0 = disabled rx baseband loopback 0 = disabled rx if loopback 0 = disabled cd/clock control 0 = receiver allows output clock when ...

  • Page 138

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem user interfaces tm065 - rev. 3.3 4-99 4.5 terminal port user interface the terminal port of the dmd2401 allows for complete control and monitoring of all dmd2401 parameters and functions via an rs-232 serial interface..

  • Page 139

    User interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 4-100 tm065 – rev. 3.3 this page is intentionally left blank.

  • Page 140

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-1 section 5 – electrical interfaces 5.0 dmd2401 connections all dmd2401 connections are made to labeled connectors located on the rear of the unit: the connector definitions below are those on the dmd2401 unit....

  • Page 141

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-2 tm065 – rev. 3.3 5.3 dmd2401 with rs-422/-449 data interface refer to figure 5-1 for dc pinouts. Figure 5-1. Dmd2401 satellite modem w/ rs-422/-449 data interface 5.3.1 rcv if in (j1) the receive if input (j1) is the 50 – 90 ...

  • Page 142

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-3 table 5-2. Rs-232 terminal port – 9-pin female “d” connector (j5) pin number signal description direction 2 txd transmit data input 3 rxd receive data output 5 gnd ground – 5.3.6 alarm (j6) the modem has two ...

  • Page 143

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-4 tm065 – rev. 3.3 5.3.7 remote (j7) the remote port (j7) is the rs-485 connection for remote monitor and control of the modem. It is a 9-pin female “d” connector. Refer to table 5-5 below for the connector pinouts. Table 5-5. ...

  • Page 144

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-5 3 bal exc-a external clock a (-) input 21 bal exc-b external clock b (+) input 16 rx-0-a receive octet a (-) output 34 rx-0 b receive octet b (+) output 17 tt-a terminal timing a (-) input 35 tt-b terminal ti...

  • Page 145

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-6 tm065 – rev. 3.3 5.2.9.2 v.35 adapter to j9 table 5-8 provides the pinouts if the user wishes to fabricate an adapter from a 37-pin, v.35 to j9. Table 5-8. 25-pin v.35 adapter to j9 v.35 37-pin connector signal 37-pin connect...

  • Page 146

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-7 5.4 dmd2401 with rs-422/-449 data interface figure 5-2. Dmd2401 satellite modem w/ asynchronous data connector 5.4.1 rcv if in (j1) the receive if input (j1) is the 50 – 90 mhz, and 100 – 180 mhz demodulator ...

  • Page 147

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-8 tm065 – rev. 3.3 5.4.6 alarm (j6) 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 (j6). The two relays are designated modulator alar...

  • Page 148

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-9 5.5 dmd2401 ibs figure 5-3. Dmd2401 satellite modem w/ ibs 5.5.1 rcv if in (j1) the receive if input (j1) is the 50 – 90 mhz, and 100 – 180 mhz demodulator if input. 5.5.2 ext ref in (j2) the external referen...

  • Page 149

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-10 tm065 – rev. 3.3 5.5.6 alarm (j6) 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 (j6). The two relays are designated modulator ala...

  • Page 150

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-11 16 escaudtx 2a idr esc audio input channel 2a input 17 escaud rx 1a idr esc audio output channel 1a output 18 escaud rx 2a idr esc audio output channel 2a output 19 escbwi 3 idr esc backward alarm input - 3 ...

  • Page 151

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-12 tm065 – rev. 3.3 receive data b 46 escbwo 4c idr esc backward alarm out - 4 common output 47 bal exc-b external clock input b input 48 gnd ground 49 escaudtx 1b idr esc audio input channel 1b input 50 escaudtx 2b idr esc aud...

  • Page 152

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-13 5.5.9 sync data (j10) the synchronized data port (j10) is used for synchronous data interface and uses rs-422, rs-232, and v.35 interfaces. It is a 37-pin female connector. Refer to table 5-11 for the connec...

  • Page 153

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-14 tm065 – rev. 3.3 5.5.10 ibs alarms (j14) the ibs alarms interface port (j14) is a 25-pin female “d” connector. Refer to table 5-12 for connector pinouts. Table 5-12. Ibs alarms interface - 25-pin female “d” (j14) pin number ...

  • Page 154

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-15 5.5.11 async (j15) the asynchronous interface port (j15) is a 9-pin female “d” connector. Refer to table 5-13 for connector pinouts. Refer to section 5.8 for configuration switch settings. Table 5-13. Asynch...

  • Page 155

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-16 tm065 – rev. 3.3 5.6 dmd2401 idr with d&i figure 5-4. Dmd2401 satellite modem w/ idr and d&i rear panel connectors 5.6.1 rcv if in (j1) the receive if input (j1) is the 50 – 90 mhz, and 100 – 180 mhz demodulator if input. 5....

  • Page 156

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-17 5.6.6 alarm (j6) 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 (j6). The two relays are designated modulator ala...

  • Page 157

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-18 tm065 – rev. 3.3 table 5-14. Esc alarm interface - 25-pin female “d” (j14) 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 ou...

  • Page 158

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-19 5.6.14 esc 8k data (j15) the esc 8k data port (j15) is the esc 8k data connector. It is a 15-pin female “d” connector. Refer to table 5-15 for connector pinouts. Table 5-15. Esc 8k data interface - 15-pin fe...

  • Page 159

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-20 tm065 – rev. 3.3 5.6.15 g.703 bal (j16) the g.703 balanced port (j10) are the g.703 balanced data connectors. It is a 15-pin female “d” connector. Refer to table 5-16 for connector pinouts. Table 5-16. G.703 bal - 15-pin con...

  • Page 160

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-21 table 5-17. Esc audio - 9-pin female “d” connector (j17) pin number signal description direction 1 escaudtx 1a tx audio 1a input 2 escaudrx 1a rx audio 1a output 3 gnd ground – 4 escaudtx 2b tx audio 2b inpu...

  • Page 161

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-22 tm065 – rev. 3.3 table 5-19. Asynchronous interface - 9-pin female “d” connector (j17) pin number signal description direction 1 tx-485-b transmit data rs485 (+) input 2 txd-232 transmit data rs232 input 3 rxd-232 receive da...

  • Page 162

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-23 5.7 dmd2401 idr figure 5-5. Dmd2401 satellite modem idr 5.7.1 rcv if in (j1) the receive if input (j1) is the 50 – 90 mhz, and 100 – 180 mhz demodulator if input. 5.7.2 ext ref in (j2) the external reference...

  • Page 163

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-24 tm065 – rev. 3.3 5.7.5 terminal (j5) the terminal port (j5) pinouts are listed below in table 5-20. Table 5-20. Rs-232 terminal port – 9-pin female “d” connector (j5) pin number signal description direction 2 txd transmit da...

  • Page 164

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-25 5.7.7 remote (j7) the remote port (j7) is the rs-485 connection for remote monitor and control of the modem. It is a 9-pin female “d” connector. Refer to table 5-23 below for the connector pinouts. Table 5-2...

  • Page 165

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-26 tm065 – rev. 3.3 5.8 dmd2401 universal interface figure 5-6. Dmd2401 satellite modem universal interface connectors 5.8.1 rcv if in (j1) the receive if input (j1) is the 50 – 90 mhz, and 100 – 180 mhz demodulator if input. 5...

  • Page 166

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-27 5.8.6 alarm (j6) 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 (j6). The two relays are designated modulator ala...

  • Page 167

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-28 tm065 – rev. 3.3 table 5-25. Sync data - cable number ca/4826 pinouts 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 168

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-29 table 5-26. V.35 data - cable number ca/4841 pinouts pin signal description direction b gnd signal ground --- c rts request to send a (-) input d cts clear to send a (-) output e dsr data mode a (-) output f...

  • Page 169

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-30 tm065 – rev. 3.3 5.8.12 rd (j12) the receive data port (j12) is the unbalanced receive data bnc connector. 5.8.13 esc alarms (j14) the esc alarm interface port (j14) is the esc alarm connector. It is a 25-pin female “d” conn...

  • Page 170

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-31 5.8.14 esc 8k data (j15) the esc 8k data port (j15) is the esc 8k data connector. It is a 15-pin female “d” connector. Refer to table 5-28 for connector pinouts. Table 5-28. Esc 8k data interface - 15-pin fe...

  • Page 171

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-32 tm065 – rev. 3.3 5.8.15 g.703 bal (j16) the g.703 balanced port (j10) are the g.703 balanced data connectors. It is a 15-pin female “d” connector. Refer to table 5-29 for connector pinouts. Table 5-29. G.703 bal - 15-pin con...

  • Page 172

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-33 table 5-30. Esc audio - 9-pin female “d” connector (j17) pin number signal description direction 1 escaudtx 1a tx audio 1a input 2 escaudrx 1a rx audio 1a output 3 gnd ground – 4 escaudtx 2b tx audio 2b inpu...

  • Page 173

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-34 tm065 – rev. 3.3 table 5-32. Asynchronous interface - 9-pin female “d” connector (j17) pin number signal description direction 1 tx-485-b transmit data rs485 (+) input 2 txd-232 transmit data rs232 input 3 rxd-232 receive da...

  • Page 174

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem electrical interfaces tm065 - rev. 3.3 5-35 table 5-37. Async port dip switch settings – rs-232 null only with cts & rts 1 off 2 off 3 on 4 on 5 on 6 off 5.9.1 as/3771 daughter card table 5-38 is used to configure as/3771 daughter card. This card come...

  • Page 175

    Electrical interfaces dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 5-36 tm065 – rev. 3.3 5.9.2 as/4803 daughter card table 5-39 is used to configure as/4803 daughter card. This card comes without switches. To configure it, find the resistor location that corresponds to the equivalent switch on t...

  • Page 176

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem maintenance tm065 - rev. 3.3 6-1 section 6 – maintenance 6.0 periodic maintenance the dmd2401 modulator requires no periodic field maintenance procedures. Should a unit be suspected of a defect in field operations after all interface signals are verif...

  • Page 177

    Maintenance dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 6-2 tm065 – rev. 3.3 6.2.1 alarm masks the user has the capability to ‘mask’ individual alarms on the dmd2401. When an alarm is masked, the front panel leds and the fault relays do not get asserted, but the alarm will still be displayed. T...

  • Page 178

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem maintenance tm065 - rev. 3.3 6-3 table 6-2. Dmd2401 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 switches to ...

  • Page 179

    Maintenance dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 6-4 tm065 – rev. 3.3 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 undertake. ...

  • Page 180

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem maintenance tm065 - rev. 3.3 6-5 figure 6-2. Idr ber curve figure 6-3. Reed-solomon (idr) ber curve.

  • Page 181

    Maintenance dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 6-6 tm065 – rev. 3.3 figure 6-4. Sequential 384 kbps ber curve figure 6-5. Trellis 8psk ber curve.

  • Page 182

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem maintenance tm065 - rev. 3.3 6-7 6.5 dmd2401 agc curve figure 6-6 represents the agc curve for the dmd2401. Figure 6-6. Dmd2401 agc curve ibs fault conditions and actions figure 6-7 and table 6-4 illustrate the ibs fault conditions and actions to be t...

  • Page 183

    Maintenance dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 6-8 tm065 – rev. 3.3 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 - loss of terrestri...

  • Page 184

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem technical specifications tm065 - rev. 3.3 7-1 section 7 – technical specifications 7.0 introduction this section defines the technical performance parameters and specifications for the dmd2401 and dmd2401l satellite modems. 7.1 transmit and receive da...

  • Page 185

    Technical specifications dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 7-2 tm065 – rev. 3.3 typical eb/no (viterbi) rate 1/2 rate 3/4 rate 7/8 at ber = 10 -5 5.1 6.2 7.5 at ber = 10 -7 6.2 7.7 8.6 typical eb/no (trellis 8psk) rate 1/2 at ber = 10 -5 7.2 at ber = 10 -7 8.9 typical eb/no, @ 64 kbps...

  • Page 186

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem technical specifications tm065 - rev. 3.3 7-3 7.5 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. The f...

  • Page 187

    Technical specifications dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 7-4 tm065 – rev. 3.3 this page is intentionally left blank.

  • Page 188

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem appendices tm065 - rev. 3.3 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, 10, ...

  • Page 189

    Appendices dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 8-2 tm065 – rev. 3.3 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 33 17, 22, 25, 27, 28, 29, 30, 31, 32...

  • Page 190

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem appendices tm065 - rev. 3.3 8-3 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, 50, 52, 53, 54, 55, 56, 57, 58, 59 61 41, 46, 49, 51, ...

  • Page 191

    Appendices dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 8-4 tm065 – rev. 3.3 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 88 71, 74, 76, 77, 79, 80, 81, 82, 83, 84, 85, 86, 87 89 72, 75, 77, 78, 80, 81, 82, 83, 84, 85, 86, 87, 88 90 ...

  • Page 192

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem appendices tm065 - rev. 3.3 8-5 115 96, 99, 101, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114 116 97, 100, 102, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115 117 98, 101, 103, 104, 106, 107, 108, 109, 110, 111, 112, 113, 114...

  • Page 193

    Appendices dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 8-6 tm065 – rev. 3.3 144 124, 126, 128, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143 145 125, 127, 129, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144 146 126, 128, 130, 132, 133, 134, 135, 136,...

  • Page 194

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem appendices tm065 - rev. 3.3 8-7 173 154, 156, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172 174 155, 157, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173 175 156, 158, 160, 161, 162, 163, 164, 165,...

  • Page 195

    Appendices dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 8-8 tm065 – rev. 3.3 202 182, 184, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201 203 183, 185, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202 204 184, 186, 187, 189, 190, 191,...

  • Page 196

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem appendices tm065 - rev. 3.3 8-9 229 209, 210, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228 230 210, 211, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229 231 212, 214, 215, 216,...

  • Page 197

    Appendices dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 8-10 tm065 – rev. 3.3 251 231, 232, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250 252 233, 234, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251 253 234, 235, 237, 238, 239...

  • Page 198

    Dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem appendices tm065 - rev. 3.3 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) c...

  • Page 199

    Appendices dmd2401/dmd2401l/dmd2401 ibs/idr satellite modem 8-12 tm065 – rev. 3.3 this page is intentionally left blank.