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Radyne DMD2050 Operation Manual

Manual is about: universal satellite modem

Summary of DMD2050

  • Page 1

    Dmd2050 universal satellite modem installation and operation manual tm110 revision 1.3 radyne inc. • 3138 e. Elwood st. • phoenix, az 85034 • (602) 437-9620 • fax: (602) 437-4811 • www.Radn.Com.

  • Page 3

    Dmd2050 universal satellite modem warranty policy tm110 – rev. 1.3 iii warranty policy wp radyne inc. (seller) warrants the items manufactured and sold by radyne inc. To be free of defects in material and workmanship for a period of two (2) years from date of shipment radyne inc.’s obligation under ...

  • Page 4

    Warranty policy dmd2050 universal satellite modem iv tm110 - rev. 1.3 in no event shall radyne inc. Be liable for incidental, consequential, special or resulting loss or damage of any kind howsoever caused. Radyne inc.’s liability for damages shall not exceed the payment, if any, received by radyne ...

  • Page 5

    Dmd2050 universal satellite modem preface tm110 – rev. 1.3 v preface p this manual provides installation and operation information for the radyne dmd2050 universal satellite modem. This is a technical document intended for use by engineers, technicians, and operators responsible for the operation an...

  • Page 6

    Preface dmd2050 universal satellite modem vi tm110 - rev. 1.3 trademarks product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged. Copyright © 2006, radyne inc. This manual is proprietary to radyne inc. And is intende...

  • Page 7: Toc

    Dmd2050 universal satellite modem table of contents tm110 – rev. 1.3 vii table of contents toc warranty policy ............................................................................................................Iii preface ........................................................................

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    Table of contents dmd2050 universal satellite modem viii tm110 - rev. 1.3 section 3 - theory of operation ................................................................................3-1 3.0 dmd2050 hardware _______________________________________________ 3-1 3.0.1 dmd2050 l-band/if printed circu...

  • Page 9

    Dmd2050 universal satellite modem table of contents tm110 – rev. 1.3 ix 3.9 loop timing ____________________________________________________ 3-12 3.9.1 transmit (mil-188-114a, rs-422)__________________________________ 3-13 3.9.2 g.703 interface or asymmetrical data rates__________________________ 3-...

  • Page 10

    Table of contents dmd2050 universal satellite modem x tm110 - rev. 1.3 section 4 - user interfaces ........................................................................................4-1 4.0 user interfaces ___________________________________________________ 4-1 4.1 front panel user interface __...

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    Dmd2050 universal satellite modem table of contents tm110 – rev. 1.3 xi 4.8.1.2 full-duplex flow control________________________________________ 4-56 4.8.2 ethernet daisy chain ____________________________________________ 4-56 4.8.3 ethernet qos type _____________________________________________ 4-5...

  • Page 12

    Table of contents dmd2050 universal satellite modem xii tm110 - rev. 1.3 5.4.3 8k data (j3) ___________________________________________________ 5-8 5.4.4 g.703 bal (j4) _________________________________________________ 5-9 5.4.5 switch interface (j5) ________________________________________ 5-9 5.4....

  • Page 13

    Dmd2050 universal satellite modem table of contents tm110 – rev. 1.3 xiii 6.1.1.2 major rx alarms _______________________________________________ 6-3 6.1.1.3 minor tx alarms _______________________________________________ 6-3 6.1.1.4 minor rx alarms _______________________________________________ 6-...

  • Page 14

    Table of contents dmd2050 universal satellite modem xiv tm110 - rev. 1.3 7.18 dmd2050 ber specifications ______________________________________ 7-9 7.18.1 ber performance (viterbi)________________________________________ 7-9 7.18.2 ber performance (sequential) ___________________________________ 7-1...

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    Dmd2050 universal satellite modem table of contents tm110 – rev. 1.3 xv appendix b - front panel upgrade procedure........................................................ B-1 b.0 introduction ______________________________________________________ b-1 b.1 required equipment __________________________...

  • Page 16

    Table of contents dmd2050 universal satellite modem xvi tm110 - rev. 1.3.

  • Page 17

    Dmd2050 universal satellite modem introduction tm110 – rev. 1.3 1-1 introduction 1 this chapter provides an overview of the dmd2050 universal satellite modem. The dmd2050 may be referred to in this manual as the dmd2050 or “the unit”. 1.0 overview radyne 's new dmd2050 satellite modem (figure 1-1) b...

  • Page 18

    Introduction dmd2050 universal satellite modem 1-2 tm110 - rev. 1.3 1.1 dmd2050 configurations the dmd2050 can be configured in the following different ways: features and options that are installed when the unit is ordered feature upgrades hardware options that the user can install at their own loca...

  • Page 19

    Dmd2050 universal satellite modem introduction tm110 – rev. 1.3 1-1.

  • Page 20

    Dmd2050 universal satellite modem installation tm110 – rev. 1.3 2-1 installation 2 this section provides instructions on unpacking and installation, as well as storage of the unit. 2.0 installation requirements the dmd2050 modem is designed to be installed within any standard 19-inch (48.26 cm) wide...

  • Page 21

    Installation dmd2050 universal satellite modem 2-2 tm110 - rev. 1.3 the dmd2050 contains a lithium battery. Danger of explosion exists if the battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries in accordance with l...

  • Page 22

    Dmd2050 universal satellite modem installation tm110 – rev. 1.3 2-3 2.3 mounting considerations when mounted in an equipment rack, adequate ventilation must be provided. The recommended ambient temperature in the rack should preferably be between 10 ° and 35 ° c, and held constant for best equipment...

  • Page 23

    Installation dmd2050 universal satellite modem 2-4 tm110 - rev. 1.3 implementing strap code 26 can set the following modem configuration. Refer to table 4-4 for an explanation and tabular listing of available strap codes. The frequency and modulator output power are set independently of the strap co...

  • Page 24

    Dmd2050 universal satellite modem installation tm110 – rev. 1.3 2-5 2.5.1 initial power-up before initial power up of the dmd2050, it is a good idea to disconnect the transmit output from the operating ground station equipment. This is especially true if the current modulator configuration settings ...

  • Page 25

    Installation dmd2050 universal satellite modem 2-6 tm110 - rev. 1.3.

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    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-1 theory of operation 3 3.0 dmd2050 hardware the dmd2050 is based on a two printed circuit card (minimum configuration) design with additional optioned printed circuit cards available for additional features. The minimum config...

  • Page 27

    Theory of operation dmd2050 universal satellite modem 3-2 tm110 - rev. 1.3 figure 3-2. If card block diagram in the modulator, analog in-phase (i) and quadrature (q) signals are generated on the digital baseband printed circuit card, routed to the l-band/if printed circuit card, and modulated at the...

  • Page 28

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-3 the dmd2050 baseband processing printed circuit card provides a flexible architecture that allows many different modes of terrestrial and satellite framing, various fec options, digital voice processing, and several different...

  • Page 29

    Theory of operation dmd2050 universal satellite modem 3-4 tm110 - rev. 1.3 the baseband printed circuit card also contains the monitor and control (m&c) circuitry responsible for: programmable part setup and initialization continuous control and adjustment of some functions calibration monitoring fa...

  • Page 30

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-5 figure 3-4. Dmd2050 universal satellite modem functional block diagram 3.1.3 tx baseband processing the tx data and clock enters the baseband processor, passes through a rate adapting fifo and enters the framer/drop processor...

  • Page 31

    Theory of operation dmd2050 universal satellite modem 3-6 tm110 - rev. 1.3 3.1.4 rx baseband processing the receive processor performs the inverse function of the tx processor. Data received from the satellite passes through the bb loopback circuit to the reed-solomon decoder to the deframer. The de...

  • Page 32

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-7 3.2 earth station to earth station communications port the modem contains a selectable rs-232, or rs-485 asynchronous communications port for earth station-to-earth station communications. The baud rate and protocol can be se...

  • Page 33

    Theory of operation dmd2050 universal satellite modem 3-8 tm110 - rev. 1.3 3.5.1 baseband processing the baseband processor performs all of the functions required for an ibs/idr framing unit, a reed-solomon codec, an e1/t1 drop and insert system, a turbo codec, and sequential/viterbi. In addition, t...

  • Page 34

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-9 figure 3-7. Loopback functional block diagram figure 3-8. Loopback functional block diagram.

  • Page 35

    Theory of operation dmd2050 universal satellite modem 3-10 tm110 - rev. 1.3 3.6 dmd2050 clocking options the following paragraphs define the types of clocking options available to the user at the front panel of the dmd2050. Refer to figure 3.9 for clocking and polarity. 3.6.1 clock selection as show...

  • Page 36

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-11 3.6.2 scte: serial clock transmit external this clock is the transmit terrestrial clock associated with the interface. With the g.703 interface selected, scte is the clock that is recovered from the g.703 data stream. Scte i...

  • Page 37

    Theory of operation dmd2050 universal satellite modem 3-12 tm110 - rev. 1.3 3.6.8 ext if ref: external if reference this is not actually a clock, but does have some clocking implications. When the external reference is used, the master oscillator within the dmd2050 is locked to the external referenc...

  • Page 38

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-13 3.9.1 transmit (mil-188-114a, rs-422) set sct source to ‘scr’. The tx terminal equipment must clock the tx data with the sct clock and return data and scte (optional). If scte is returned to the modem from the terminal equip...

  • Page 39

    Theory of operation dmd2050 universal satellite modem 3-14 tm110 - rev. 1.3 figure 3-10. Looped modems figure 3-11. Looped modems with separate d&i trunks.

  • Page 40

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-15 3.10.1 drop only when drop is enabled and insert is disabled, the dmd2050 performs a drop-only function. Framed e1 or t1 data is input via the send data in port, the selected timeslots are dropped into the ibs frame structur...

  • Page 41

    Theory of operation dmd2050 universal satellite modem 3-16 tm110 - rev. 1.3 figure 3-14. Insert only with internal frame source 3.11 mode selection the dmd2050 d&i can be easily configured to support several commonly used terrestrial data formats. For e1 data, the user can choose between pcm-30, pcm...

  • Page 42

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-17 3.11.3 pcm-31 the pcm-31 mode of operation supports an e1 interface with no multiframe alignment (mfas) or channel associated signaling (cas). The user may independently program n timeslots to drop and n timeslots to insert ...

  • Page 43

    Theory of operation dmd2050 universal satellite modem 3-18 tm110 - rev. 1.3 3.13 drop and insert mapping the following displays under interface d&i setup (both tx and rx), are editing displays only: satch ts enter to edit any changes made in these displays are made on the screen, but are not entered...

  • Page 44

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-19 example: for a modem w/ drop & insert enabled at a data rate of 256 (with timeslots assigned 1 - 1, 2 - 2, etc.). At a data rate of 256, the modem will allow 4 channels to assign timeslots. Under the tx menu, assign the time...

  • Page 45

    Theory of operation dmd2050 universal satellite modem 3-20 tm110 - rev. 1.3 to view the current timeslot assignment: 1. If there is a question of the channels not being entered properly, the mapping menu may be used to see how the channels/timeslots are configured in the modem. 2. Use and the arrow ...

  • Page 46

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-21 3.14.1 reed-solomon operation in the dmd2050 when the reed-solomon codec is enabled, data is fed to the r-s encoding section of the dmd2050 where it is scrambled, formed into blocks, r-s encoded, and interleaved. Unique word...

  • Page 47

    Theory of operation dmd2050 universal satellite modem 3-22 tm110 - rev. 1.3 table 3-1. Reed-solomon codes type of service data rate (kbps) r-s code (n, k, t) 1 bandwidth expansion [ (n/k) -1 ] interleaving depth maximum 2 r-s codec delay (ms) small idr (with 16/15 o/h) 64 128 256 384 512 768 1024 15...

  • Page 48

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-23 the ibs async framer data mode provides a service channel between the two sites of a link permitting the modem processors to send messages and get responses over this channel. Aupc can be set to operate on either or both dir...

  • Page 49

    Theory of operation dmd2050 universal satellite modem 3-24 tm110 - rev. 1.3 3.16 asynchronous overhead operation (framing/multiplexer capability) the asynchronous framing/multiplexer is capable of multiplexing a relatively low-speed overhead channel onto the terrestrial data stream resulting in a sl...

  • Page 50

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-25 2048 1024 832 19200 896 19200 960 19200 1024 19200 1088 19200 1152 19200 1216 19200 1280 19200 1344 19200 1408 19200 1472 19200 1536 19200 1600 19200 1664 19200 1728 19200 1792 19200 1856 19200 1920 19200 1984 19200 2048 192...

  • Page 51

    Theory of operation dmd2050 universal satellite modem 3-26 tm110 - rev. 1.3 the ratio of the through terrestrial data channel rate to the aggregate rate is 15/16. The standard transmit and receive channels of the es to es data channel in standard ibs mode are raw channels operating at the specific b...

  • Page 52

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-27 3.19.1 to disable the esc backward alarms if the esc alarms port will not be used and the backward alarm indications are to be disabled, you will need to connect pins 19, 11, 22 and 23 to pin 1 (gnd). 3.20 satellite control ...

  • Page 53

    Theory of operation dmd2050 universal satellite modem 3-28 tm110 - rev. 1.3 the control ratio of the receiving units must match the control ratio of the transmitting unit. 3.20.2 aggregate data rate the aggregate data rate equals the following: user data rate + in-band rate + synchronizing overhead ...

  • Page 54

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-29 user data rate in-band rate control ratio aggregate data rate overhead ratio 512,000 19,200 1/7 533,974 1.043 1,024,000 19,200 1/7 1,045,974 1.021 2,048,000 19,200 1/7 2,069,951 1.011 3,072,000 19,200 1/7 3,093,943 1.007 4,0...

  • Page 55

    Theory of operation dmd2050 universal satellite modem 3-30 tm110 - rev. 1.3 3.21 scc overhead channel setup 1. Set the framing mode (located under mod and demod data menus) to scc. After doing this, two new menus will appear to the right of the framing menu, for both the mod and demod. The new menus...

  • Page 56

    Dmd2050 universal satellite modem theory of operation tm110 – rev. 1.3 3-31 3.22 locating the dmd2050 id code operational procedure the modem has unique id codes that allow the user to add feature upgrades to the modem without the unit having to be returned to the factory. Users are required to iden...

  • Page 57

    Theory of operation dmd2050 universal satellite modem 3-32 tm110 - rev. 1.3.

  • Page 58

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-1 user interfaces 4 4.0 user interfaces there are three user interfaces available for the dmd2050. These are: front panel interface remote port interface terminal interface. 4.1 front panel user interface the front panel of the dmd...

  • Page 59

    User interfaces dmd2050 universal satellite modem 4-2 tm110 - rev. 1.3 4.1.1 vfd front panel display the front panel display is a 2 line by 16-character vacuum flourescent display. The display is lighted and the brightness can be set to increase when the front panel is currently in use. The vfd auto...

  • Page 60

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-3 4.1.4 front panel led indicators eight leds on the dmd2050 front panel (refer to table 4-3) indicate the status of the dmd2050’s operation. The led colors maintain a consistent meaning. Green signifies that the indication is appr...

  • Page 61

    User interfaces dmd2050 universal satellite modem 4-4 tm110 - rev. 1.3 figure 4-2. Entering new parameters following a valid input, the dmd2050 will place the new setting into the nonvolatile eeprom making it available immediately and available the next time the unit is powered-up. 4.3 front panel c...

  • Page 62

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-5 4.3.2 modulator menu options and parameters network spec {mil 188-165a, idr, ibs, drop & insert, closed net, dvb} used with idr, or ibs interface only. The network spec command sets a number of parameters within the modem to meet...

  • Page 63

    User interfaces dmd2050 universal satellite modem 4-6 tm110 - rev. 1.3 dvb: en301-201 and en300-421 data rates: all rates framing type: dvb scrambler type: dvb spectrum mask: dvb 0.25, 0.35 closed net: all possible combinations allowed, however, dvb settings requires the dvb network spec. Strap code...

  • Page 64

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-7 spectrum {normal, inverted} allows the user to invert the direction of rotation for psk modulation. Normal meets the iess specification. Modulation {qpsk, bpsk, oqpsk, 8psk, 16qam} allows the user to select the modulation type. S...

  • Page 65

    User interfaces dmd2050 universal satellite modem 4-8 tm110 - rev. 1.3 sat framing {1/15 (ibs), 1/15 (async), 96 kbps (idr), dvb, edmac, efaupc, scc, none, efficient d&i} used with idr, ibs, or asynchronous interface only. Allows the user to select the framing type. When scc framing is selected abov...

  • Page 66

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-9 displays the aupc mode. Aupc eb/no {4 to 20db} allows the user to enter the target eb/no value. Aupc min lvl {0 to -25db} allows the user to set the minimum transmit power. The minimum transmit power is the lowest power setting t...

  • Page 67

    User interfaces dmd2050 universal satellite modem 4-10 tm110 - rev. 1.3 setting that will be used when the remote modem commands an increase of the transmit power. It is the setting that will be used when the remote modem indicates that its receiver has lost lock and commands a change to the setting...

  • Page 68

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-11 tx 2047 pattern allows the user to enable or disable the transmit 2047 pattern test mode of the remote modem. Remote aupc monitor the ‘remote aupc monitor’ menu contains the remote monitor status for the aupc function. Remote 20...

  • Page 69

    User interfaces dmd2050 universal satellite modem 4-12 tm110 - rev. 1.3 idr: (iess-308) for data rates 1.544, 2.048, 6.312, 8.448 mbps framing type: 96 kbps (idr) descrambler type: v.35 spectrum mask: intelsat for data rates framing type: 1/15 (ibs) descrambler type: iess-309 spectrum mask: intelsat...

  • Page 70

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-13 if (menu) frequency (mhz) {50 – 90 mhz, 100 – 180 mhz, or 950 - 2050 mhz} allows the user to enter the modulator if frequency in 1 hz increments. Spectrum {normal inverted} allows the user to invert the direction of rotation for...

  • Page 71

    User interfaces dmd2050 universal satellite modem 4-14 tm110 - rev. 1.3 inner fec viterbi {1/2, 3/4, 7/8, none} optional fec rates: sequential {1/2, 3/4, 7/8} trellis {8psk} turbo ≤ 20mbps {.793, .495, 3/4, 7/8} turbo >20mbps {.750, .875} csc {3/4} dvb vit {2/3, 5/6} dvb trellis {3/4, 5/6, 7/8, 8/9}...

  • Page 72

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-15 when scc framing is selected above, the following two screens are available. Scc ctl ratio {1/1, 1/2, 1/3, 1/4, 1/5, 1/6, 1/7} only available when using scc framing. Allows the user to simulate the framing used by the satellite ...

  • Page 73

    User interfaces dmd2050 universal satellite modem 4-16 tm110 - rev. 1.3 4.3.4 interface menu options and parameters tx setup (menu) circuit id allows the user entry of a tx circuit identifier. Circuits can be given up to an 11 character alphanumeric identity such as link1. Terr interface {rs423 seri...

  • Page 74

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-17 sat ch terrch allows the user to edit the tx edit map to specify the terrestrial slots that will be dropped into assigned satellite channels. The satellite channels are fixed ane the number of channels are determined by the data...

  • Page 75

    User interfaces dmd2050 universal satellite modem 4-18 tm110 - rev. 1.3 buffer clock pol {normal, inverted} allows the user to select the buffer clock polarity for the tx terrestrial clock relative to the tx data. If g.703 interface is selected, this selection cannot be changed. Drop & insert (menu)...

  • Page 76

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-19 overhead signaling bytes in the ibs overhead to pass asynchronous data. Es interface {rs-232, rs-485} allows the user to select the interface type. Es bits/char {7,8} allows the user to choose between 7 or 8 bit data. Rx es enha...

  • Page 77

    User interfaces dmd2050 universal satellite modem 4-20 tm110 - rev. 1.3 ebno (db) displays the estimated e b /n o as seen by the demodulator. Raw ber displays the estimated channel error rate (before decoding) measured by the modem. Corrected ber the cber display shows an estimated corrected bit err...

  • Page 78

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-21 port 1 status {see the note above} displays the current status of lan port 1. Port 2 status {see the note above} displays the current status of lan port 2. Port 3 status {see the note above} displays the current status of lan po...

  • Page 79

    User interfaces dmd2050 universal satellite modem 4-22 tm110 - rev. 1.3 masking alarms may cause undesirable modem performance. Current alarms (menu) tx major (menu) status edit table fpga cfg {pass/fail, unmasked/masked} indicates a transmit fpga configuration failure. Dsp cfg {pass/fail, unmasked/...

  • Page 80

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-23 tx terr ais {pass/fail, unmasked/masked} indicates that ais has been detected in the tx data stream. Dni frame lock {pass/fail, unmasked/masked} indicates that the tx oversample clock pll is not locked. This alarm will flash on ...

  • Page 81

    User interfaces dmd2050 universal satellite modem 4-24 tm110 - rev. 1.3 changes. A solid indication points toward a configuration problem within the modem. Ethernet wan indicates that the interface card is faulted and will not pass data (displays only when the ethernet card is installed and the ethe...

  • Page 82

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-25 rs uncorr {pass/fail, unmasked/masked} indicates status of the reed-solomon uncoded word fault. Tpc ifc lock {pass/fail, unmaskd, masked} ebno (db) {pass/fail, unmasked/masked} indicates that the eb/no is outside of limits. Rx a...

  • Page 83

    User interfaces dmd2050 universal satellite modem 4-26 tm110 - rev. 1.3 +20v supply {pass/fail, unmasked/masked} displays the measured voltage of the +20 volt power bus located inside the modem. Ext clock act {pass/fail, unmasked/masked} indicates that the external clock is not active. Ext ref act {...

  • Page 84

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-27 dni m-frame lock drop crc tx dvb frm lock rx major (menu) fpga cfg dsp cfg signal lock frame lock multiframe lock lb synth pll if synth pll ethernet wan rx minor (menu) buff underflow buff near empty buff near full buff overflow...

  • Page 85

    User interfaces dmd2050 universal satellite modem 4-28 tm110 - rev. 1.3 ebno rx level ibs ber rx dvb frm lock common (menu) terr fpga cfg codec fpga cfg codec dev cfg voltage (menu) +1.5v rx supply +1.5v tx supply +3.3v supply +5v supply +12v supply -12v supply +20v supply ext clock act ext ref act ...

  • Page 86

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-29 idr backward 1 {rcv = no/yes, frc = no/yes} idr backward 2 {rcv = no/yes, frc = no/yes} idr backward 3 {rcv = no/yes, frc = no/yes} idr backward 4 {rcv = no/yes, frc = no/yes} map summary {none, bk 1; bk 2; bk 1, 2; bk 3; bk 1, ...

  • Page 87

    User interfaces dmd2050 universal satellite modem 4-30 tm110 - rev. 1.3 4.3.8 system menu options and parameters date (mm/dd/yy) allows the user to enter the current date. Time {hh:mm:ss} allows the user to enter the current time. Config copy {current, cfg1….Fg10} allows the user to save and copy mo...

  • Page 88

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-31 tcp/ip (menu) boot mode {default, non-vol, bootp} default: during initialization (boot up), the modem will restore the web setting to the standard ip mask and addresses supplied by the modem. The modem will be taken off the netw...

  • Page 89

    User interfaces dmd2050 universal satellite modem 4-32 tm110 - rev. 1.3 specified, the address is presumed to be reachable via the router. Broadcast and loop back addresses will not be allowed. These are addresses with all subnet bits set to 0’s or 1’s. Router ip addr {xxx.Xxx.Xxx.Xxx} the ip addres...

  • Page 90

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-33 trap version {v1, v2} this controls the type of message format used when a message trap is generated by the equipment and bound for a snmp host. Messages will only be sent if the unit has been authorized to do so. Authorization ...

  • Page 91

    User interfaces dmd2050 universal satellite modem 4-34 tm110 - rev. 1.3 admin: at this highest access right, the users can monitor and control the modems parameters, change any user’s name and authentication password, and modify ip network settings. Admin setting allows access to the entire site. Au...

  • Page 92

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-35 no group: denies access guest: users are able to navigate most of the site, and view modem parameter settings. Oper: users can monitor and and control parameter settings, and change their own authentication passwords. Admin: at ...

  • Page 93

    User interfaces dmd2050 universal satellite modem 4-36 tm110 - rev. 1.3 hi stab vco adjust {0% - 100%} allows the user to adjust the internal frequency reference for calibration. Only displayed if the system reference clock source is hi stability. Largest hb gap used for factory test only. Soft rese...

  • Page 94

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-37 txif txlband enh async idr seq rs rs custom ibs d&i aupc 8psk 16qam turbo 52 mbps dvb edmac 4.3.9 test menu options and parameters tx test pattern {none, 2047, 2^15-1, 2^23-1} allows the user to enable the tests listed above. Rx...

  • Page 95

    User interfaces dmd2050 universal satellite modem 4-38 tm110 - rev. 1.3 if:if loopback loops the if output of the modulator to the if input of the demodulator. If using 8psk or 16qam modulation, the output power must be above -15 db. Terr tx/rx:enables both. Baseband loopback is performed at interfa...

  • Page 96

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-39 table 4-4. Dmd2050 strap codes dis = disable strap code (d ecimal) data rate (kbp s) o ver head code rate type framin g typ e sc ra m b le r t y pe drop and ins e rt reed-solom on modul ation mode 1 64 16/15 1/2 vit ibs ibs dis ...

  • Page 97

    User interfaces dmd2050 universal satellite modem 4-40 tm110 - rev. 1.3 136 768 1 3/4 vit none v.35 (iess) dis dis qpsk cnt 144 896 1 1/2 vit none v.35 (iess) dis dis qpsk cnt 44 896 1 3/4 vit none v.35 (iess) dis dis qpsk cnt 7 1344 1 1/2 vit none v.35 (iess) dis dis qpsk cnt 11 1344 1 3/4 vit none...

  • Page 98

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-41 104 576 16/15 1/2 vit ibs ibs dis dis qpsk ibs 148 576 16/15 3/4 vit ibs ibs dis dis qpsk ibs 152 640 16/15 1/2 vit ibs ibs dis dis qpsk ibs 161 640 16/15 3/4 vit ibs ibs dis dis qpsk ibs 162 704 16/15 1/2 vit ibs ibs dis dis qp...

  • Page 99

    User interfaces dmd2050 universal satellite modem 4-42 tm110 - rev. 1.3 101 2048 16/15 3/4 vit ibs ibs dis dis qpsk ibs 102 1856 16/15 1/2 vit ibs ibs dis dis qpsk ibs 105 1856 16/15 3/4 vit ibs ibs dis dis qpsk ibs 106 2048 16/15 3/4 vit ibs ibs dis dis qpsk ibs 120 1544 965/1024 3/4 vit ibs ibs di...

  • Page 100

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-43 4.5.1 operational case examples for best results always begin setup by setting the data rate to 512 kbps. This data rate is applicable for all modes and as such provides a convenient launch point for setting up the modem. Any mo...

  • Page 101

    User interfaces dmd2050 universal satellite modem 4-44 tm110 - rev. 1.3 demodulator: method 1 - set mode to idr under demod if menu: set desired rx frequency under demod data menu: set code rate to 3/4 vit set data rate for 8448000 under interface menu: set interface type set buff clock selection se...

  • Page 102

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-45 demodulator: method 1 - set framing to 1/15: set mode to ibs: under demod if menu: set desired rx frequency under demod data menu: set code rate to 3/4 vit set data rate for 1544000 under interface menu: set interface type set b...

  • Page 103

    User interfaces dmd2050 universal satellite modem 4-46 tm110 - rev. 1.3 demodulator: method 1 - set mode to: closed net under demod if menu: set desired rx frequency under demod data menu: set code rate to 3/4 vit set framing for 1/15 under interface menu: set interface type set buff clock selection...

  • Page 104

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-47 4.6.1 data rate data rate affects the drop and insert function in the following ways: • it determines the number of satellite channels that will be displayed in the edit maps. • it contributes to the operational mode selection p...

  • Page 105

    User interfaces dmd2050 universal satellite modem 4-48 tm110 - rev. 1.3 4.6.3 terrestrial framing - drop mode/insert mode the drop mode selection and the insert mode selection identify the terrestrial data-framing format. As previously mentioned, their selection is influenced by the modulator and de...

  • Page 106

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-49 4.6.4 d&i sample configurations and d&i clock setup options the following are several examples of how to configure the modem for d&i. Also, refer to figures 3-14 through 3-17 for the d&i clocking setup options available. Example...

  • Page 107

    User interfaces dmd2050 universal satellite modem 4-50 tm110 - rev. 1.3 example 2: multidestinational remote site programming drop 512 kbps from a t1 trunk, 3/4 rate viterbi. Extract 512 kbps from a 1536 kbps carrier and insert into a t1 trunk, 3/4 rate viterbi. Drop 512 kbps from a t1 trunk, 3/4 ra...

  • Page 108

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-51 figure 4-4. Single trunk figure 4-5. Rx only with trunk figure 4-6. Rx only no trunk.

  • Page 109

    User interfaces dmd2050 universal satellite modem 4-52 tm110 - rev. 1.3 4.7 d&i maps and map editing the drop and insert multiplexer is programmed by loading it with a transmit and receive map. Maps always contain 30 entries, although, only the first “n” entries are relevant (see table 4-5). The dmd...

  • Page 110

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-53 rom maps are read-only and may not be modified (refer to table 4-6). Table 4-6. D&i rom maps ro m map t1/e1 time slot # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 1 1 1 1 1 1 1 1 1 1 1 1 1...

  • Page 111

    User interfaces dmd2050 universal satellite modem 4-54 tm110 - rev. 1.3 the following paragraphs give examples of typical configurations that could use the rom maps as templates. The rom map used would have to be first copied to the appropriate active transmit (drop) and/or active receive (insert) m...

  • Page 112

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-55 rom map 6 could be used as the template for an active transmit (drop) and/or active receive (insert) map with a modulator and/or demodulator configured for 768 kbps operation. The t1 or e1 data in the transmit path or the demodu...

  • Page 113

    User interfaces dmd2050 universal satellite modem 4-56 tm110 - rev. 1.3 4.8.1 ethernet flow control when disabled, if a packet is received for transmission and no packet buffer space is available, the incoming packet is discarded. When enabled, flow control is used to throttle the transmission stati...

  • Page 114

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-57 4.8.3 ethernet qos type when normal qos is selected, the interface determines a packets priority based on the following: ieee 803.3ac tag when present ipv4 type of service / differentiated services field ipv6 traffic class when ...

  • Page 115

    User interfaces dmd2050 universal satellite modem 4-58 tm110 - rev. 1.3 4.8.5 setting up the dmd20/dmd20 lbst ethernet bridge to operate like a fifo in certain circumstances, it may be desirable to have the ethernet interface operate in a fifo like manner with no reordering of packets. This can be e...

  • Page 116

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-59 link status: the following status is available under the monitor menu/link status sub-menu when the ethernet data interface is selected: port 1 status: displays the current status of lan port 1. Port 2 status: displays the curre...

  • Page 117

    User interfaces dmd2050 universal satellite modem 4-60 tm110 - rev. 1.3 this type of input is followed by pressing the ‘enter’ or carriage return key. An input can be aborted at any time by pressing the ‘esc’ key. Invalid input keys cause an error message to be displayed on the terminal. The termina...

  • Page 118

    Dmd2050 universal satellite modem user interfaces tm110 – rev. 1.3 4-61 4.11 connecting the terminal 1. Connect the computer to the dmd2050 remote connector (j20) on the rear of the unit using the rs-232 cable. 2. Enable the terminal by selecting terminal mode (located under the system - control mod...

  • Page 119

    User interfaces dmd2050 universal satellite modem 4-62 tm110 - rev. 1.3.

  • Page 120

    Dmd2050 universal satellite modem rear panel interfaces tm110 – rev. 1.3 5-1 rear panel interfaces 5 this section discusses the electrical interfaces available from the rear panel. All locations are as viewed from the rear of the unit unless otherwise specified. 5.0 dmd2050 connections all dmd2050 c...

  • Page 121

    Rear panel interfaces dmd2050 universal satellite modem 5-2 tm110 - rev. 1.3 figure 5-1. Dmd2050 universal satellite modem rear panel configurations.

  • Page 122

    Dmd2050 universal satellite modem rear panel interfaces tm110 – rev. 1.3 5-3 5.1 compact flash the compact flash slot is located on the right side as viewed from the rear of the unit. A 128 mbit flash memory card stores all the modem m&c and operational data. It must be present when the modem is ope...

  • Page 123

    Rear panel interfaces dmd2050 universal satellite modem 5-4 tm110 - rev. 1.3 5.3.5 rx l-band if (j14) the receive if input port is a 50 ohm sma female connector that can be used for l-band if. The if frequency can be programmed from 950 to 2050 mhz in 1 hz steps. 5.3.6 alarm (j15) the alarm port is ...

  • Page 124

    Dmd2050 universal satellite modem rear panel interfaces tm110 – rev. 1.3 5-5 5.3.8 async (j17) the asynchronous data interface port is a 9-pin female “d” connector. Refer to table 5-3 for pinouts. Table 5-3. Async port 9-pin female “d” connector (j17) pin no. Signal name signal direction 1 receive d...

  • Page 125

    Rear panel interfaces dmd2050 universal satellite modem 5-6 tm110 - rev. 1.3 13 clear t send b (+) cs-b output 14 send data b (+) sd-b input 15 send timing a (-) st-a output 16 receive data b (+) rd-b output 17 receive timing a (-) rt-a output 18 modulator fault - open collector mf output 19 request...

  • Page 126

    Dmd2050 universal satellite modem rear panel interfaces tm110 – rev. 1.3 5-7 5.4 idr/ibs interface (optional) 5.4.1 esc alarm (j1) the esc (engineering service circuits) alarms port is a 25-pin female “d” connector. Refer to table 5-6 for pinouts. Table 5-6. Esc alarm port 25-pin female “d” connecto...

  • Page 127

    Rear panel interfaces dmd2050 universal satellite modem 5-8 tm110 - rev. 1.3 5.4.2 64k audio (j2) the 64k audio port allows for communications between earth stations. It is a 9-pin female “d” connector that complies to iess 308. Refer to table 5-7 for pinouts. Table 5-7. 64k audio port 9-pin female ...

  • Page 128

    Dmd2050 universal satellite modem rear panel interfaces tm110 – rev. 1.3 5-9 5.4.4 g.703 bal (j4) the g.703 interface port (balanced) is a 15-pin female “d” connector. Refer to table 5-9 for pinouts. Table 5-9. G.703 bal port 15-pin female “d” connector (j4) pin no. Signal name signal direction 1 se...

  • Page 129

    Rear panel interfaces dmd2050 universal satellite modem 5-10 tm110 - rev. 1.3 6 idr esc backward alarm out - 1 normally open escbwo 1no no direction 7 synchronous data terminal timing input – a sync tt-a input 8 idr esc backward alarm out - 2 normally closed escbwo 2nc no direction 9 g.703 drop data...

  • Page 130

    Dmd2050 universal satellite modem rear panel interfaces tm110 – rev. 1.3 5-11 31 synchronous data clear to send - a sync cs-a output 32 ibs receive octet output - a rxo-a output 33 synchronous data request to send - a sync rs-a input 34 synchronous data receiver ready - a sync rr-a output 35 g.703 s...

  • Page 131

    Rear panel interfaces dmd2050 universal satellite modem 5-12 tm110 - rev. 1.3 53 idr esc backward alarm input - 4 escbwi 4 input 54 ibs es transmit data – b idr esc backward alarm input - 2 tx-b bwi 2 input 55 demod fault open collector output dmd flt output open collector 56 ibs es receive data inp...

  • Page 132

    Dmd2050 universal satellite modem rear panel interfaces tm110 – rev. 1.3 5-13 5.5 high-speed serial interface (hssi) (optional) 5.5.1 hssi (j6) the hssi (high-speed serial interface) (j6) complies with the hssi functional and electrical specifications. The physical interface is a 50-pin scsi-2 type ...

  • Page 133

    Rear panel interfaces dmd2050 universal satellite modem 5-14 tm110 - rev. 1.3 5.6 asi/dvb/m2p interface (optional) 5.6.1 asi in (j1) the asi in port (j1) is supported on the bnc connector. The interface complies with dvb asi electrical specifications. 5.6.2 asi out (j2) the asi out port (j2) is supp...

  • Page 134

    Dmd2050 universal satellite modem rear panel interfaces tm110 – rev. 1.3 5-15 24 dvalid- input 12 psync+ input 25 psync- input 13 cable shield --- table 5-12b. J3 − m2p in - 25-pin female pin number signal name direction 1 outclk+ output 14 outclk- output 2 clk+ input 15 clk- input 3 sync+ input 16 ...

  • Page 135

    Rear panel interfaces dmd2050 universal satellite modem 5-16 tm110 - rev. 1.3 5.6.4 dvb/m2p out (j4) the dvb or m2p out port (j4) is also supported on the db-25 female connector. It complies with rs-422 electrical specifications. Refer to table 5-13a for dvb and 5-13 b for m2p pinouts for this conne...

  • Page 136

    Dmd2050 universal satellite modem rear panel interfaces tm110 – rev. 1.3 5-17 table 5-13b. J3 - m2p out – 25-pin female ‘d’ sub connector pin number signal name direction 1 nc output 14 nc output 2 clk+ output 15 clk- output 3 sync+ output 16 sync- output 4 valid+ output 17 valid- output 5 d0+ outpu...

  • Page 137

    Rear panel interfaces dmd2050 universal satellite modem 5-18 tm110 - rev. 1.3 5.7 ethernet data interface (optional) the dmd20/dmd20 lbst ethernet data interface provides four rj-45, auto-crossover and auto-sensing, 10/100 ethernet data ports. Js1 through js4 may be referred to port 1 through port 4...

  • Page 138

    Dmd2050 universal satellite modem rear panel interfaces tm110 – rev. 1.3 5-19 5.8.1 64k audio (j2) the 64k audio port allows for communications between earth stations. It is a 9-pin female “d” connector that complies to iess 308. Refer to table 5-15a for pinouts in audio mode and table 5-15b for pin...

  • Page 139

    Rear panel interfaces dmd2050 universal satellite modem 5-20 tm110 - rev. 1.3 5.8.2 8k data (j3) the 8k data port allows for communications between earth stations. It is a 15-pin female “d” connector that complies to iess 308. Refer to table 5-16 for pinouts. Table 5-16. 8k data port 15-pin female “...

  • Page 140

    Dmd2050 universal satellite modem rear panel interfaces tm110 – rev. 1.3 5-21 10 no connection --- --- 11 receive data b (+) rd-b output 12 drop data out (-) ddo-a output 13 insert data in (-) exc (-) idi-a input 14 mod fault mod-flt open collector output 15 demod fault dmd-flt open collector output...

  • Page 141

    Rear panel interfaces dmd2050 universal satellite modem 5-22 tm110 - rev. 1.3 23 backward alarm in – 3 escbwi 3 input 24 no connection nc --- 25 no connection nc --- 5.8.5 sd (ddi) (j6) the send data (drop data in) port (unbalanced) is a 75-ohm female bnc connector. 5.8.6 ddo (j7) the drop data out ...

  • Page 142

    Dmd2050 universal satellite modem rear panel interfaces tm110 – rev. 1.3 5-23 20 - 23 45 - 48 4 ancillary from dce reserved output 24 49 tm test mode output 25 n/a mod_flt alarm output 50 n/a dmd_flt alarm output 5.10 ethernet data interface the dmd20/dmd20 lbst ethernet data interface provides four...

  • Page 144

    Dmd2050 universal satellite modem maintenance and troubleshooting tm110 – rev. 1.3 6-1 maintenance and troubleshooting 6 this section discusses unit maintenance and troubleshooting for the dmd2050 universal satellite modem. The dmd2050 contains a lithium battery. Danger of explosion exists if the ba...

  • Page 145

    Maintenance and troubleshooting dmd2050 universal satellite modem 6-2 tm110 - rev. 1.3 symptom possible cause there is an improper receive input to modem. The receive carrier level is too low. The receive carrier frequency is outside of the acquisition range. The transmit carrier is incompatible. Th...

  • Page 146

    Dmd2050 universal satellite modem maintenance and troubleshooting tm110 – rev. 1.3 6-3 6.1.1.2 major rx alarms alarm possible cause fpga cfg indicates a receive fpga hardware failure. Dsp cfg indicates a receive dsp failure. Signal lock indicates that the demod is unable to lock to a signal. Frame l...

  • Page 147

    Maintenance and troubleshooting dmd2050 universal satellite modem 6-4 tm110 - rev. 1.3 6.1.1.4 minor rx alarms alarm possible cause buff underflow indicates that a doppler buffer underflow has occurred. Buff near empty indicates that the doppler buffer is about to underflow. Buff near full indicates...

  • Page 148

    Dmd2050 universal satellite modem maintenance and troubleshooting tm110 – rev. 1.3 6-5 6.1.1.5 drop and insert alarms alarm possible cause multiframe lock the insert framer is not in sync. Crc lock an insert crc fault occurred. Valid in t1-esf, pcm-30, or pcm- 30c modes. T1 signaling an insert t1 ye...

  • Page 149

    Maintenance and troubleshooting dmd2050 universal satellite modem 6-6 tm110 - rev. 1.3 6.1.2 alarm masks the dmd2050 performs a high degree of self-monitoring and fault isolation. The alarms for these faults are separated into the following three categories: active alarms common equipment alarms bac...

  • Page 150

    Dmd2050 universal satellite modem maintenance and troubleshooting tm110 – rev. 1.3 6-7 6.1.2.3 backward alarms backward alarms are alarms that are fed back to or received from the other end of the satellite link. In ibs mode (including drop & insert), backward alarm 1 is the only one used. It would ...

  • Page 151

    Maintenance and troubleshooting dmd2050 universal satellite modem 6-8 tm110 - rev. 1.3 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 terr...

  • Page 152

    Dmd2050 universal satellite modem technical specifications tm110 – rev. 1.3 7-1 technical specifications 7 7.0 data rates bpsk uncoded 4.8 kbps to 10.0 mbps 1/2 rate bpsk 2.4 kbps to 10.0 mbps 3/4 rate bpsk 3.6 kbps to 10.0 mbps 7/8 rate bpsk 4.2 kbps to 10.0 mbps qpsk uncoded 9.6 kbps to 10.0 mbps ...

  • Page 153

    Technical specifications dmd2050 universal satellite modem 7-2 tm110 - rev. 1.3 7.2 demodulator demodulation bpsk, qpsk, and oqpsk, 8psk, 16qam if tuning range 50 to 90, 100 to 180 mhz in 1 hz steps l-band tuning range 950 to 2050 mhz in 1 hz steps impedance if, 50 ohm (75 ohm optional) l-band, 50 o...

  • Page 154

    Dmd2050 universal satellite modem technical specifications tm110 – rev. 1.3 7-3 time slots 1-31 any combination 7.6 terrestrial interfaces mil-188-114a, dvb asi/spi, hssi, ethernet 4 port 10/100 base-t 7.7 idr/esc interface (optional) g.703 t1 (100) 1.544 mbps, 100 ohm balanced, ami and b8zs g.703 e...

  • Page 155

    Technical specifications dmd2050 universal satellite modem 7-4 tm110 - rev. 1.3 7.14 hssi /ethernet hssi hssi, high-speed serial interface, 50-pin scsi-2 type connector (female) ethernet data interface four rj-45, auto-crossover, auto-sensing, 10/100 ethernet data ports. Complies with ieee 802.3 and...

  • Page 156

    Dmd2050 universal satellite modem technical specifications tm110 – rev. 1.3 7-5 7.17 dmd2050 data rate limits 7.17.1 non-dvb modulation code rate min data rate max data rate bpsk none 4800 10000000 bpsk vit 1/2 2400 10000000 bpsk vit 3/4 3600 10000000 bpsk vit 7/8 4200 10000000 bpsk seq 1/2 2400 204...

  • Page 157

    Technical specifications dmd2050 universal satellite modem 7-6 tm110 - rev. 1.3 oqpsk tpc 3/4 7200 15000000 oqpsk tpc 7/8 8400 17500000 oqpsk tpc .495 4752 6312000 oqpsk tpc .793 7612 6312000 8psk tre 2/3 9600 52000000 8psk tpc 3/4 10800 20000000 8psk tpc 7/8 12600 20000000 8psk tpc .495 9504 631200...

  • Page 158

    Dmd2050 universal satellite modem technical specifications tm110 – rev. 1.3 7-7 8psk tre 8/9 11550 20000000 16qam tre 3/4 13200 20000000 16qam tre 7/8 15400 20000000 188 mode modulation code rate min data rate max data rate bpsk vit 1/2 2400 4607843 bpsk vit 2/3 2950 6143790 bpsk vit 3/4 3318 691176...

  • Page 159

    Technical specifications dmd2050 universal satellite modem 7-8 tm110 - rev. 1.3 qpsk vit 7/8 8400 17500000 8psk tre 2/3 9600 20000000 8psk tre 5/6 12000 20000000 8psk tre 8/9 12800 20000000 16qam tre 3/4 14400 20000000 16qam tre 7/8 16800 20000000

  • Page 160

    Dmd2050 universal satellite modem technical specifications tm110 – rev. 1.3 7-9 7.18 dmd2050 ber specifications 7.18.1 ber performance (viterbi) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r viterbi decode r specification 1/2 rate specification 3/4 rate s...

  • Page 161

    Technical specifications dmd2050 universal satellite modem 7-10 tm110 - rev. 1.3 7.18.2 ber performance (sequential) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r sequentia l decode r specification 1/2 rate specification 3/4 rate specification 7/8 rate ty...

  • Page 162

    Dmd2050 universal satellite modem technical specifications tm110 – rev. 1.3 7-11 7.18.3 ber performance (viterbi with reed-solomon) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r viterbi decoder reed solomon specification 1/2 rate specification 3/4 rate b/...

  • Page 163

    Technical specifications dmd2050 universal satellite modem 7-12 tm110 - rev. 1.3 7.18.4 ber performance (turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r turbo decoder specification turbo 0.495 specification turbo 0.793 typical performance b/o/qpsk un...

  • Page 164

    Dmd2050 universal satellite modem technical specifications tm110 – rev. 1.3 7-13 7.18.5 ber performance (8psk trellis) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r trellis decode r specification 2/3 rate specification 2/3 rate w/rs typical performance 8p...

  • Page 165

    Technical specifications dmd2050 universal satellite modem 7-14 tm110 - rev. 1.3 7.18.6 ber performance (8psk turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r turbo decode r specification turbo 0.793 typical performance 8psk uncoded theory figure 7-6....

  • Page 166

    Dmd2050 universal satellite modem technical specifications tm110 – rev. 1.3 7-15 7.18.7 ber performance (16qam viterbi) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 eb/no in db be r viterbi decode r specification 3/4 rate specification 7/8 rate typical performan...

  • Page 167

    Technical specifications dmd2050 universal satellite modem 7-16 tm110 - rev. 1.3 7.18.8 ber performance (16qam viterbi with reed-solomon) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 eb/no in db be r viterbi decoder - reed solomon specification 3/4 rate w/rs spe...

  • Page 168

    Dmd2050 universal satellite modem technical specifications tm110 – rev. 1.3 7-17 7.18.9 ber performance (16qam turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 eb/no in db be r turbo decoder turbo 0.495 turbo 0.793 typical performance 16qam uncoded theory fig...

  • Page 169

    Technical specifications dmd2050 universal satellite modem 7-18 tm110 - rev. 1.3 7.18.10 ber performance ((o)qpsk turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r turbo decoder specification 1/2 rate specification 3/4 rate typical performance b/o/qpsk...

  • Page 170

    Dmd2050 universal satellite modem technical specifications tm110 – rev. 1.3 7-19 7.18.11 ber performance (8psk turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 eb/no in db be r turbo decoder specification 3/4 rate typical performance 8psk uncoded theory figure 7-11. 8...

  • Page 171

    Technical specifications dmd2050 universal satellite modem 7-20 tm110 - rev. 1.3 7.18.12 ber performance (16qam turbo) 1e-9 1e-8 1e-7 1e-6 1e-5 1e-4 1e-3 1e-2 1e-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 eb/no in db be r turbo decoder specification 3/4 rate typical performance 16qam uncoded theory fig...

  • Page 172

    Dmd2050 universal satellite modem technical specifications tm110 – rev. 1.3 7-21 1/2 ra te 3/4 ra te 7/8 ra te 1/2 ra te 3/4 rate 7/8 rate 1e-3 4.8 db 5.2 db 6 db 4.3 db 4.7 db 5.5 db 1e-4 5.2 db 5.7 db 6.4 db 4.7 db 5.2 db 5.9 db 1e-5 5.6 db 6.1 db 6.9 db 5.1 db 5.6 db 6.4 db 1e-6 5.9 db 6.5 db 7.4...

  • Page 173

    Technical specifications dmd2050 universal satellite modem 7-22 tm110 - rev. 1.3 turbo 0.495 turbo 0.793 turbo 0.495 turbo 0.793 1e-3 2.5 db 3.3 db 2.2 db 3 db 1e-4 2.7 db 3.7 db 2.3 db 3.2 db 1e-5 3 db 4.1 db 2.5 db 3.4 db 1e-6 3.2 db 4.4 db 2.6 db 3.6 db 1e-7 3.5 db 4.8 db 2.7 db 3.8 db 1e-8 3.7 d...

  • Page 174

    Dmd2050 universal satellite modem technical specifications tm110 – rev. 1.3 7-23 3/4 rate 7/8 rate 3/4 rate 7/8 ra te 1e-3 8.9 db 10.3 db 8.1 db 9.5 db 1e-4 9.8 db 11.1 db 9 db 10.3 db 1e-5 10.7 db 11.9 db 9.9 db 11.1 db 1e-6 11.5 db 12.7 db 10.7 db 11.9 db 1e-7 12.4 db 13.5 db 11.6 db 12.7 db 1e-8 ...

  • Page 175

    Technical specifications dmd2050 universal satellite modem 7-24 tm110 - rev. 1.3 1/2 rate 3/4 ra te 7/8 rate 1/2 rate 3/4 ra te 7/8 rate 1e-3 - 3.2 db 4 db - 2.8 db 3.7 db 1e-4 - 3.4 db 4.1 db - 3 db 3.8 db 1e-5 2.7 db 3.6 db 4.2 db 2.4 db 3.2 db 3.9 db 1e-6 2.9 db 3.8 db 4.3 db 2.6 db 3.4 db 4 db 1...

  • Page 176

    Dmd2050 universal satellite modem technical specifications tm110 – rev. 1.3 7-25 7.16.13 acg output voltage the agc output voltage is a function of the input power level in dbm. The agc output voltage is found on the alarm connector pin 14 of j15. Figure 7-13. Agc voltage monitor.

  • Page 177

    Technical specifications dmd2050 universal satellite modem 7-26 tm110 - rev. 1.3.

  • Page 178

    Dmd2050 universal satellite modem appendix a tm110 – rev. 1.3 a-1 product options a a.0 hardware options the following enhanced interface cards are available. A.0.1 g.703/idr esc interface the dmd2050 can be equipped with a g.703/idr esc interface. A.0.2 turbo card the dmd2050 can be equipped with a...

  • Page 179

    Appendix a dmd2050 universal satellite modem a-2 tm110 - rev. 1.3 a.0.10 hssi / g703 high-speed serial interface 50-pin scsi-2 type connector. Complies with cisco systems in hssi design specification, revision 3.0. The g703 interface supports t1, e1, t2, e2 rates balanced or unbalanced. It does not ...

  • Page 180

    Dmd2050 universal satellite modem tm110 – rev. 1.3.

  • Page 182

    Dmd2050 universal satellite modem appendix b tm110 – rev. 1.3 b- 1 front panel upgrade procedure b b.0 introduction the dmd2050 universal satellite modem offers the ability to perform field upgrades of the modem’s feature set quickly and easily from the front panel. Purchased upgrades will become pa...

  • Page 183

    Appendix b dmd2050 universal satellite modem b-2 tm110 – rev. 1.3 2. Contact radyne with the unit id and desired upgrades. The modem’s unit id can be found on the front panel as follows: a. From the modem’s main menu, scroll right to the system menu. B. Scroll down. C. Scroll right to the hw/fw conf...

  • Page 184

    Dmd2050 universal satellite modem appendix b tm110 – rev. 1.3 b- 3 b.3 demonstration procedure the procedure for enabling a 30-day demo of the dmd2050 options is similar to the procedure used for permanently updating the modems feature set. The one big difference being that at the end of 30 days, th...

  • Page 185

    Appendix b dmd2050 universal satellite modem b-4 tm110 – rev. 1.3 2. Contact radyne with the unit id and request a demonstration. The modem’s unit id can be found on the front panel as follows: a. From the modem’s main menu, scroll right to the system menu. B. Scroll down. C. Scroll right to the hw/...

  • Page 186

    Dmd2050 universal satellite modem appendix b tm110 – rev. 1.3 b- 5 b.3.3 running in demonstration mode because of the possible interruption in traffic when the demonstration mode expires, several indicators are used to inform an operator that the modem is indeed, operating in demonstration mode. The...

  • Page 187

    Appendix b dmd2050 universal satellite modem b-6 tm110 – rev. 1.3 b.3.4 canceling demonstration mode at any time, a demonstration may be canceled and have the modem return to its normal operation. Once the demonstration has been canceled, it cannot be restarted using the old demonstration code. In o...

  • Page 188

    Dmd2050 universal satellite modem appendix c tm110 – rev. 1.3 c- 1 carrier control c c.0 states the dmd2050 transmitter will turn off the carrier output automatically when the modem determines there is a major alarm. This is done to prevent the carrier from outputting an unknown spectrum and possibl...

  • Page 189

    Appendix c dmd2050 universal satellite modem c-2 tm110 – rev. 1.3 c.5 carrier rts modulator output is turned off before reprogramming modulator functions that may alter the output spectrum through the front panel, and the user is required to enter “yes” to re-enable output after the change. When usi...

  • Page 190

    Dmd2050 universal satellite modem appendix d tm110 – rev. 1.3 d -1 web browser setup guide d d.0 introduction the dmd20/50/2050 web browser allows for connection to radyne products through the ethernet port. The web interface allows for complete control and monitoring of all equipment parameters and...

  • Page 191

    Appendix d dmd2050 universal satellite modem d-2 tm110 – rev. 1.3 the web user database consists of three users (user 1, user 2, user 3), with initial default names of guest, oper, and admin. Access rights and authentication make it possible to restrict access to a specified set of web users. There ...

  • Page 192

    Dmd2050 universal satellite modem appendix d tm110 – rev. 1.3 d -3 2. User 1 : this will allow the operator to change the user name, assign the access group, authorized password for “user 1”. Upon entering the following fields will be displayed: a. Access group: this will allow the assignment of “no...

  • Page 193

    Appendix d dmd2050 universal satellite modem d-4 tm110 – rev. 1.3 d.2 modem web site once it is determined that the modem is reachable, start the internet browser and type the modem ip address in the address field then press the enter key. The equipment introduction page will display general informa...

  • Page 194

    Dmd2050 universal satellite modem appendix d tm110 – rev. 1.3 d -5 to navigate to other parts of the site, the modem needs to know who the user is to allow assignment of the proper level of transactions and resources. This authentication is done through the use of a username and password. The follow...

  • Page 195

    Appendix d dmd2050 universal satellite modem d-6 tm110 – rev. 1.3 the top of the web page displays an alarm section reflecting the current front panel status of the modem. This block will be updated immediately whenever status is changed. The navigation scheme consists of gel tabs that correspond to...

  • Page 196

    Dmd2050 universal satellite modem appendix d tm110 – rev. 1.3 d -7.

  • Page 197

    Dmd2050 universal satellite modem appendix e tm110 – rev. 1.3 e -1 efficient drop & insert e e.0 introduction the following paragraphs describe the menu structure and procedure for configuring a radyne dmd20 / dmd2050 / dmd50 modem for efficient drop & insert mode. E.1 prerequisite in order for a mo...

  • Page 198

    Appendix e dmd2050 universal satellite modem e-2 tm110 – rev. 1.3 e.2 efficient drop & insert mode with efficient drop & insert, the terrestrial interface selections, terrestrial framing modes, terrestrial to satellite mapping, es to es channel, satellite and terrestrial backward alarm functionality...

  • Page 199

    Dmd2050 universal satellite modem appendix e tm110 – rev. 1.3 e -3 e.2.1 calculating the required satellite bandwidth in order to calculate the satellite bandwidth (i.E. The symbol rate), we must first calculate the efficient d&i rate (i.E. The data rate plus the overhead required for efficient drop...

  • Page 200

    Appendix e dmd2050 universal satellite modem e-4 tm110 – rev. 1.3 summary and examples: the following examples further illustrate how to calculate the efficient d&i rate which can be summarized for n timeslots as: efficient d&i rate = data rate + (n * 250 bps) with e1 signaling add n * 2000 bps with...

  • Page 201

    Dmd2050 universal satellite modem appendix e tm110 – rev. 1.3 e -5 example 2b: change to e1-pcm30 framing (e1 signaling), standard es to es overhead add 10 * 2000 bps to our previous calculation gives 662500 bps still saving over 20,000 bps compared to the open network standard. Example 2c: change t...

  • Page 202

    Dmd2050 universal satellite modem appendix f tm110 – rev. 1.3 f -1 tcp/ip ethernet setup f f.0 introduction the modem supports snmp, ftp protocols and the web browser. Utilization of the protocols is dependent upon proper set up of the tcp-ip menus. This document is to be used only as a guideline fo...

  • Page 203

    Appendix f dmd2050 universal satellite modem f-2 tm110 – rev. 1.3 d. Ip test: the ip test selection is similar in behavior to the default selection. When enabled, the following preset parameters will be programmed and will not change until the selection is changed. To edit these parameters, change t...

  • Page 204

    Dmd2050 universal satellite modem appendix f tm110 – rev. 1.3 f -3 8. Modem eaddr: this displays the modem (unit) ethernet address. The modem ethernet address is configured at the factory. It is a unique radyne equipment identifier address. Example: 0010650903eb 9. Ether rate: this displays the curr...

  • Page 205

    Appendix f dmd2050 universal satellite modem f-4 tm110 – rev. 1.3 the computer tcp/ip must be properly configured in order to obtain connectivity. The following set-up procedure can be used as a guide to aide in this setup. The following instructions apply only to windows 2000 or xp classic. 1. Clic...

  • Page 206

    Dmd2050 universal satellite modem appendix f tm110 – rev. 1.3 f -5 local area connection properties box 4. Select “use the following ip address”. Enter in the ip address that is offset by 5 or so numbers from the equipment address (the computer and the equipment that it is connecting to can not have...

  • Page 207

    Appendix f dmd2050 universal satellite modem f-6 tm110 – rev. 1.3 f.4 testing the ethernet connection using the ping program (optional) to verify that connectivity and settings are correct, use the ping command to report if the host (equipment) is correctly responding. This is accomplished by openin...

  • Page 208

    Dmd2050 universal satellite modem appendix f tm110 – rev. 1.3 f -7.

  • Page 209

    Dmd2050 universal satellite modem glossary tm110 – rev. 1.3 g-1 glossary g a a ampere ac alternating current adc analog to digital converter agc automatic gain control ais alarm indication system. A signal comprised of all binary 1s. Amsl above mean sea level ansi american national standards institu...

  • Page 210

    Glossary dmd2050 universal satellite modem g-2 tm110 – rev. 1.3 c c celsius cats computer aided test software ca/xxxx cable assembly cd-rom compact disk – read only memory clk clock cm centimeter com common cpu central processing unit crc cyclic redundancy check. A system of error checking performed...

  • Page 211

    Dmd2050 universal satellite modem glossary tm110 – rev. 1.3 g-3 f f fahrenheit fas frame acquisition sync. A repeating series bits, which allow acquisition of a frame. Fcc federal communications commission fec forward error correction fifo first in, first out fpga field programmable gate arrays fw f...

  • Page 212

    Glossary dmd2050 universal satellite modem g-4 tm110 – rev. 1.3 k kbps kilobits per second kbps kilobytes per second kg kilogram khz kilohertz ksps kilosymbols per second l lcd liquid crystal display led light emitting diode lo local oscillator m ma milliampere mbps megabits per second mfas multi-fr...

  • Page 213

    Dmd2050 universal satellite modem glossary tm110 – rev. 1.3 g-5 q qam quadrature amplitude modulation qpsk quadrature phase shift keying r ram random access memory rf radio frequency rom read only memory rms root mean square ru rack unit. 1 ru = 1.75”/4.45 cm rx receive (receiver) rxd receive data r...

  • Page 214

    Glossary dmd2050 universal satellite modem g-6 tm110 – rev. 1.3 w x y z w watt misc. µs microsecond 16qam 16 quadrature amplitude modulation 8psk 8 phase shift keying.