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- DMD20 LBST
- Installation And Operation Manual
Radyne DMD20 LBST Installation And Operation Manual
Summary of DMD20 LBST
Page 1
Dmd20 universal satellite modem installation and operation manual tm103 revision 1.1 radyne comstream corp. • 3138 e. Elwood st. • phoenix, az 85034 • (602) 437-9620 • fax: (602) 437-4811 • www.Radn.Com.
Page 3: Warranty Policy
Dmd20 universal satellite modem warranty policy tm103 – rev. 1.1 iii warranty policy radyne comstream corporation (seller) warrants the items manufactured and sold by radyne comstream corporation to be free of defects in material and workmanship for a period of two (2) years from date of shipment ra...
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Warranty policy dmd20 universal satellite modem iv tm103 - rev. 1.1 liability for damages shall not exceed the payment, if any, received by radyne comstream corporation for the unit or product or service furnished or to be furnished, as the case may be, which is the subject of claim or dispute. Stat...
Page 5: Preface
Dmd20 universal satellite modem preface tm103 – rev. 1.1 v preface this manual provides installation and operation information for the radyne comstream corporation dmd20 universal satellite modem. This is a technical document intended for use by engineers, technicians, and operators responsible for ...
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Preface dmd20 universal satellite modem vi tm103 - rev. 1.1 disclaimer this manual has been thoroughly reviewed for accuracy. All statements, technical information, and recommendations contained herein and in any guides or related documents are believed reliable, but the accuracy and completeness th...
Page 7: Table of Contents
Dmd20 universal satellite modem table of contents tm103 – rev. 1.1 vii table of contents section 1 - introduction 1.0 overview _________________________________________________________ 1-1 1.1 dmd20 configurations ______________________________________________ 1-1 1.1.1 features/options installed at...
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Table of contents dmd20 universal satellite modem viii tm103 - rev. 1.1 3.1.6.1 terminal _______________________________________________________ 3-6 3.1.6.2 remote port____________________________________________________ 3-7 3.1.6.3 async port _____________________________________________________ 3-...
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Dmd20 universal satellite modem table of contents tm103 – rev. 1.1 ix 3.11.5 t1-d4/t1-d4-s _________________________________________________ 3-17 3.11.6 t1-esf/t1-esf-s ______________________________________________ 3-17 3.12 multidestinational systems _________________________________________ 3-17 ...
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Table of contents dmd20 universal satellite modem x tm103 - rev. 1.1 4.5.1 operational case examples________________________________________ 4-32 4.6 configuring the dmd20 for drop and insert _____________________________ 4-35 4.6.1 data rate ______________________________________________________ 4-...
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Dmd20 universal satellite modem table of contents tm103 – rev. 1.1 xi 5.21 remote (j20) __________________________________________________ 5-12 5.22 ethernet (j21) ________________________________________________ 5-12 5.23 location j22 (optional) ____________________________________________ 5-12 5.2...
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Table of contents dmd20 universal satellite modem xii tm103 - rev. 1.1 7.7 terrestrial interfaces ________________________________________________ 7-3 7.8 idr/esc interface (optional) _________________________________________ 7-3 7.9 ibs/synchronous interface (standard) _____________________________...
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Dmd20 universal satellite modem table of contents tm103 – rev. 1.1 xiii glossary____________________________________________________________ g-1.
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Table of contents dmd20 universal satellite modem xiv tm103 - rev. 1.1.
Page 15: Section 1 - Introduction
Dmd20 universal satellite modem introduction tm103 – rev. 1.1 1-1 section 1 - introduction this chapter provides an overview of the dmd20 universal satellite modem, referred to in this manual as “the modem” or “the unit.” 1.0 overview the radyne comstream corporation dmd20 universal satellite modem ...
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Introduction dmd20 universal satellite modem 2-2 tm103 - rev. 1.1 1.1.1 features/options installed at time of order features installed at the time of ordering are the options pre-installed/initialized in the factory prior to shipment. These can be reviewed from the front panel. Refer to section 4, u...
Page 17: Section 2 - Installation
Dmd20 universal satellite modem installation tm103 – rev. 1.1 2-1 section 2 - installation this section provides unpacking and installation instructions, and a description of external connections and backward alarm information. 2.0 installation requirements the dmd20 modem is designed to be installe...
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Installation dmd20 universal satellite modem 2-2 tm103 - rev. 1.1 2.1 unpacking the dmd20 universal satellite modem was carefully packaged to avoid damage and should arrive complete with the following items for proper installation: dmd20 modem unit power cord, with applicable ac connector installati...
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Dmd20 universal satellite modem installation tm103 – rev. 1.1 2-3 2.4 dmd20 initia l configuration check the dmd20 is shipped from the factory with preset factory defaults. Upon initial power-up, a user check should be performed to verify the shipped modem configuration. Refer to section 4, user int...
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Installation dmd20 universal satellite modem 2-4 tm103 - rev. 1.1 demodulator: data rate: 2.048 mbps mode: closed network satellite framing: none scrambler: v.35 (iess) drop and insert: disabled inner fec: 1/2 rate viterbi outer fec: disabled modulation: qpsk frequency: 70.000000 mhz to lock up the ...
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Dmd20 universal satellite modem installation tm103 – rev. 1.1 2-5 2.5.2 terminal setup the terminal setup is as follows: baud rate: 19.2 k (can be changed via front panel) data bits: 8 parity: no parity (fixed) stop bits: 1 stop bit 2.6 storage it is recommended that the unit be stored in its origin...
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Installation dmd20 universal satellite modem 2-6 tm103 - rev. 1.1.
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Dmd20 universal satellite modem theory of operation tm103 – rev. 1.1 3-1 section 3 – theory of operation 3.0 dmd20 hardware the dmd20 is based on a two printed circuit card (minimum configuration) design with additional optioned printed circuit cards available for additional features. The minimum co...
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Theory of operation dmd20 universal satellite modem 3-2 tm103 - rev. 1.1 figure 3-2. If card block diagram 3.0.2 dmd20 baseband processing printed circuit card the advent of million-plus gate count fpgas, advanced logic synthesis tools, and dsps providing hundreds of mips enabled the design of a sof...
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Dmd20 universal satellite modem theory of operation tm103 – rev. 1.1 3-3 figure 3-3. Dmd20 baseband processing card block diagram the baseband printed circuit card also contains the monitor and control (m&c) circuitry responsible for: programmable part setup and initialization continuous control and...
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Theory of operation dmd20 universal satellite modem 3-4 tm103 - rev. 1.1 3.0.3 enhanced interface printed circuit card the normal terrestrial data for the baseband processing card can be re-routed to the enhanced interface card. The enhanced interface card adds a variety of connections to the modem ...
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Dmd20 universal satellite modem theory of operation tm103 – rev. 1.1 3-5 3.1.2 baseband processing the baseband processor performs all of the functions required for an ibs/idr framing unit, a reed-solomon codec, and an e1/t1 drop and insert system. In addition, the baseband processing section provid...
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Theory of operation dmd20 universal satellite modem 3-6 tm103 - rev. 1.1 figure 3-5. Dmd20 clock logic rx baseband processing 3.1.6 monitor & control (m&c) subsystem also contained on the bb card is the m&c subsystem. The m&c contains a high-performance microprocessor and is responsible for overall ...
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Dmd20 universal satellite modem theory of operation tm103 – rev. 1.1 3-7 3.1.6.2 remote port this port is dedicated to the modem remote port. This port supports an asynchronous control protocol as described in section 4. It may be configured to support either rs-232 or rs-485 signal levels. This por...
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Theory of operation dmd20 universal satellite modem 3-8 tm103 - rev. 1.1 form-c contacts: the uim provides three form-c relays under processor control that appear at j11. Mod fault: de-energized when any transmit side fault is detected. Demod fault: de-energized when any receive side fault is detect...
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Dmd20 universal satellite modem theory of operation tm103 – rev. 1.1 3-9 figure 3-6. Loopback functional block diagram.
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Theory of operation dmd20 universal satellite modem 3-10 tm103 - rev. 1.1 figure 3-7. Loopback functional block diagram figure 3-8. Loopback functional block diagram.
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Dmd20 universal satellite modem theory of operation tm103 – rev. 1.1 3-11 3.6 dmd20 clocking options the following paragraphs define the types of clocking options available to the user at the front panel of the dmd20: 3.6.1 scte: serial clock transmit external this clock is the transmit terrestrial ...
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Theory of operation dmd20 universal satellite modem 3-12 tm103 - rev. 1.1 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 dmd20 is locked to the external reference, a...
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Dmd20 universal satellite modem theory of operation tm103 – rev. 1.1 3-13 3.9.1 transmit (rs-422 or v.35 interface) 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 equ...
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Theory of operation dmd20 universal satellite modem 3-14 tm103 - rev. 1.1 figure 3-10. Looped modems figure 3-11. Looped modems with separate d&i trunks.
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Dmd20 universal satellite modem theory of operation tm103 – rev. 1.1 3-15 3.10.1 drop only when drop is enabled and insert is disabled, the dmd20 performs a drop-only function. Framed e1 or t1 data is input via the send data in port, the selected timeslots are dropped into the ibs frame structure, a...
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Theory of operation dmd20 universal satellite modem 3-16 tm103 - rev. 1.1 figure 3-14. Insert only with internal frame source 3.11 mode selection the dmd20 d&i can be easily configured to support several commonly used terrestrial data formats. For e1 data, the user can choose between pcm-30, pcm-30c...
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Dmd20 universal satellite modem theory of operation tm103 – rev. 1.1 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 w...
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Theory of operation dmd20 universal satellite modem 3-18 tm103 - rev. 1.1 figure 3-15. Multidestinational communications 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...
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Dmd20 universal satellite modem theory of operation tm103 – rev. 1.1 3-19 for the transmit side: 1. Push to get the flashing cursor. 2. Use the up arrow key to make the left portion of the display read “tx edit”. 3. Use the right or left arrow keys to switch the flashing cursor to the right portion ...
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Theory of operation dmd20 universal satellite modem 3-20 tm103 - rev. 1.1 5. Press . The modem has now copied the current rx settings to the rx channel/timeslot display ). Note: it is not mandatory to assign timeslots in sequential order, although the lowest timeslot must be entered in the lowest ch...
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Dmd20 universal satellite modem theory of operation tm103 – rev. 1.1 3-21 figure 3-16. Reed-solomon encoder functional block diagram figure 3-17. Reed-solomon decoder functional block diagram table 3-1. Reed-solomon codes for idr type of service data rate (kbps) r-s code (n, k, t) 1 bandwidth expans...
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Theory of operation dmd20 universal satellite modem 3-22 tm103 - rev. 1.1 3.15 dmd20 automatic uplink power control (aupc operation) the dmd20 modem has an optional built-in provision for automatic uplink power control (aupc). Aupc attempts to maintain a constant e b /n o at the receive end of an sc...
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Dmd20 universal satellite modem theory of operation tm103 – rev. 1.1 3-23 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 slig...
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Theory of operation dmd20 universal satellite modem 3-24 tm103 - rev. 1.1 896 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 19200 3.17 standard ibs m...
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Dmd20 universal satellite modem theory of operation tm103 – rev. 1.1 3-25 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 bit...
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Theory of operation dmd20 universal satellite modem 3-26 tm103 - rev. 1.1.
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-1 section 4 – user interfaces 4.0 user interfaces there are two user interfaces available from the front panel of the dmd20. These are the front panel, and the remote port. 4.1 front panel user interface the front panel of the dmd20 ...
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User interfaces dmd20 universal satellite modem 4-2 tm103 - rev. 1.1 4.1.1 lcd front panel display the front panel display is a 2 line by 16-character lcd display. The display is lighted and the brightness can be set to increase when the front panel is currently in use. The lcd display automatically...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-3 4.1.4 front panel led indicators eight leds on the dmd20 front panel (refer to table 4-3) indicate the status of the dmd20’s operation. The led colors maintain a consistent meaning. Green signifies that the indication is appropriat...
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User interfaces dmd20 universal satellite modem 4-4 tm103 - rev. 1.1 4.3 front panel control screen menus the dmd20 front panel control screens are broken down into sections under several main menus. 4.3.1 main menus modulator demodulator interface monitor alarms system test 4.3.2 modulator menu opt...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-5 ibs: (iess-309) for data rates framing type: 1/15 (ibs) scrambler type: iess-309 spectrum mask: intelsat drop & insert: data rates: n x 64 n = 1, 2, 3, 4, 5, 6, 8, 10,12, 15, 16, 20, 24, 30 framing type: 1/15 (ibs) scrambler type: ...
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User interfaces dmd20 universal satellite modem 4-6 tm103 - rev. 1.1 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. Spe...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-7 reed-solomon (menu) these selections are visible only when the reed- solomon option is installed. Rs enable/disable {enabled, disabled} allows the user to enable/disable the reed-solomon encoder. Rs rate {refer to table 3-1 for val...
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User interfaces dmd20 universal satellite modem 4-8 tm103 - rev. 1.1 drop & insert: data rates: n x 64, n = 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30 framing type: 1/15 (ibs) descrambler type: iess-309 spectrum mask: intelsat closed net: all possible combinations allowed strap code {refer to s...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-9 data (menu) data rate (bps) {refer to technical specs for data rates} allows the user to set the data rate in bps steps via the front panel arrows or keypad. Symb rate allows the user to view the symbol rate. Inner fec {1/2 rate vi...
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User interfaces dmd20 universal satellite modem 4-10 tm103 - rev. 1.1 reed-solomon (menu) these selections are visible only when the reed- solomon option is installed. Rs enable/disable {enabled, disabled} allows the user to enable/disable the reed-solomon encoder. Rs rate {refer to table 3-1 for va...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-11 rx setup (menu) circuit id provides entry of rx circuit identifier. Circuits can be given up to an 11 character alphanumeric identity such as dlink1 terr interface {rs422 serial, m2p parallel, dvb parallel, g.703 e2, g.703 t2 bal,...
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User interfaces dmd20 universal satellite modem 4-12 tm103 - rev. 1.1 tx es enhanced (menu) tx es enhanced {disabled, enabled} tx interface {rs-232, rs -485} es baud rate {150 - 19200} allows the user to select the baud rate in enhanced async mode. Available rates are listed in table 3-3. Es bits/ch...
Page 61
Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-13 minimum tx power {variable through power range} allows the user to set the minimum transmit power. The minimum transmit power is the lowest power setting that will be used when the remote modem commands a decrease of the transmit ...
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User interfaces dmd20 universal satellite modem 4-14 tm103 - rev. 1.1 remote aupc (menu) the 'remote aupc configuration' menu contains the remote configuration parameters for the aupc function. Aupc enable {off, on} allows the user to enable or disable the aupc function of the remote modem. The remo...
Page 63
Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-15 bit errors displays the current error count from the viterbi decoder. Freq offset (hz) displays the received carrier frequency offset as measured by the modem. Voltages (menu) +1.5v rx supply displays the measured voltage of the 1...
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User interfaces dmd20 universal satellite modem 4-16 tm103 - rev. 1.1 sct clock pll {pass/fail, unmasked/masked} indicates that the tx sct clock pll is not locked. This alarm will flash on during certain modem parameter changes. A solid indication indicates a hardware or programming failure within t...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-17 signal lock {pass/fail, unmasked/masked} indicates that the demod is unable to lock to a signal. Frame lock {pass/fail, unmasked/masked} indicates that the framing unit is unable to find the expected framing pattern. Multiframe lo...
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User interfaces dmd20 universal satellite modem 4-18 tm103 - rev. 1.1 t1/e1 signaling {pass/fail, unmasked/masked} tbd ifec lock {pass/fail, unmasked/masked} indicates that the framing unit is unable to find the expected framing pattern. Ofec lock {pass/fail, unmasked/masked} indicates that the reed...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-19 ext clock act {pass/fail, unmasked/masked} indicates that the external clock is not active. Ext ref act {pass/fail, unmasked/masked} indicates no activity on the external reference. Ext ref lock {pass/fail, unmasked/masked} indica...
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User interfaces dmd20 universal satellite modem 4-20 tm103 - rev. 1.1 rx minor (menu) buff underflow buff near empty buff near full buff overflow rx data activity sat ais rx frame lock multiframe lock insert crc t1/e1 signaling ifec lock ofec lock interleaver rs uncorr. Word common (menu) terr fpga ...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-21 ext ref act ext ref lock clear latched ((enter)) allows the user to reset the latched alarms. Backward alarms backward alarms are alarms that are fed back to or received from the other end of the satellite link. In ibs mode (inclu...
Page 70
User interfaces dmd20 universal satellite modem 4-22 tm103 - rev. 1.1 front panel (menu) bklt level {off, low, med, high} allows the user to enter the backlight intensity level. Bklt timeout {00 - 99} allows the user to enter the length of time (in seconds) of keyboard inactivity before the backligh...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-23 ip addr mask {xxx.Xxx.Xxx.Xxx} the ip address mask of the local network. The mask is expressed in a hexadecimal format, and must be a valid tcp/ip mask. This field should be set before changes are made to the modem or router addre...
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User interfaces dmd20 universal satellite modem 4-24 tm103 - rev. 1.1 when v3 is used, three contexts are supported: public, mib2, and dev. Context, authentication and privacy are a portion of each snmpv3 message. The public context will only allow the user to see the sysoid of the unit. This is the...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-25 hw/fw config (menu) firmware rev displays the installed firmware revision. Main board (menu) note: only the appropriate of the vco adjustment screens listed below will be displayed. These are protected fields, to prohibit accident...
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User interfaces dmd20 universal satellite modem 4-26 tm103 - rev. 1.1 loopback {if, terr tx/rx, baseband tx/rx, none, terr rx, baseband rx, terr tx, baseband tx, ifec tx} terrestrial loopback is performed at the terrestrial interface if:if loopback loops the if output of the modulator to the if inpu...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-27 4.4 dmd20 strap codes the strap code is a quick set key that sets many of the modem parameters. For quick setup of the dmd20, strap codes are very helpful. When a strap code is entered, the modem is automatically configured for th...
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User interfaces dmd20 universal satellite modem 4-28 tm103 - rev. 1.1 48 128 1 3/4 none v.35 (iess) disable disable qpsk cnt 65 256 1 1/2 none v.35 (iess) disable disable qpsk cnt 66 256 1 3/4 none v.35 (iess) disable disable qpsk cnt 68 320 1 1/2 none v.35 (iess) disable disable qpsk cnt 72 320 1 3...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-29 37 2368 1 1/2 none v.35 (iess) disable disable qpsk cnt 38 2368 1 3/4 none v.35 (iess) disable disable qpsk cnt 41 48 1 1/2 none v.35 (iess) disable disable qpsk cnt 160 1544 3072/ 2895 1/2 ibs ibs disable disable qpsk ibs 52 1920...
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User interfaces dmd20 universal satellite modem 4-30 tm103 - rev. 1.1 168 768 16/15 3/4 ibs ibs disable disable qpsk ibs 193 832 16/15 1/2 ibs ibs disable disable qpsk ibs 194 832 16/15 3/4 ibs ibs disable disable qpsk ibs 196 896 16/15 1/2 ibs ibs disable disable qpsk ibs 208 896 16/15 3/4 ibs ibs ...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-31 139 1984 16/15 3/4 ibs ibs disable disable qpsk ibs 45 3088 1 1/2 none v.35 (iess) disable disable qpsk cnt 141 3088 1 3/4 none v.35 (iess) disable disable qpsk cnt 176 4000 1 1/2 none v.35 (iess) disable disable qpsk cnt 116 4000...
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User interfaces dmd20 universal satellite modem 4-32 tm103 - rev. 1.1 4.5.1 operational case examples note: 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. An...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-33 case 2: ibs 1.544 mbps, 3/4 rate viterbi starting with the data rate – 512 kbps modulator: method 1 - set framing to 1/15 set mode to ibs under mod data menu: set code rate to 3/4 vit set data rate for 1544000 under interface menu...
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User interfaces dmd20 universal satellite modem 4-34 tm103 - rev. 1.1 case 3: closed network, 3/4 rate viterbi, ibs overhead starting with the data rate = 512 kbps modulator: method 1 - set mode to idr: under mod data menu: set code rate to 3/4 vit set framing for 1/15 under interface menu: set inte...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-35 case 4: loop timing example method 1 - set mode to ibs under interface menu: under tx setup menu: set intf to rs-422 set sct source to scr set tx clock to scte method 2 - set mode to closed net under interface menu: under tx setup...
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User interfaces dmd20 universal satellite modem 4-36 tm103 - rev. 1.1 n = 1, data rate = 64000 n = 2, data rate = 128000 n = 3, data rate = 192000 n = 4, data rate = 256000 n = 5, data rate = 320000 n = 6, data rate = 384000 n = 8, data rate = 512000 n = 10, data rate = 640000 n = 12, data rate = 76...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-37 4.6.3.1 insert terrestrial frame source the insert terrestrial frame source selection tells the modem from where the insert terrestrial frame is coming. External: indicates that the terrestrial frame is to be input via the insert ...
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User interfaces dmd20 universal satellite modem 4-38 tm103 - rev. 1.1 under modulator: under mod if: set frequency to desired value turn if output power on under demodulator: under demod data: set data rate = 512000 set conv enc = 3/4 rate vit under demodulator: set network spec. = drop & insert und...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-39 for satellite channels that are not to be inserted, enter “ni” (no insert) for the terrestrial slot use map copy to copy rx edit to rx active under demodulator: under demod if: set frequency to desired value. Figures 4-3 through 4...
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User interfaces dmd20 universal satellite modem 4-40 tm103 - rev. 1.1 figure 4-5. Rx only with trunk figure 4-6. Rx only no trunk.
Page 89
Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-41 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 dmd20...
Page 90
User interfaces dmd20 universal satellite modem 4-42 tm103 - rev. 1.1 table 4-6. D&i rom maps rom 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 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2...
Page 91
Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-43 for example, rom map 1 could be used as the template for as active transmit (drop) map for a modulator configured for 64 kbps operation. Only the first time slot of the t1 or e1 frame would be dropped into the modulator transmit p...
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User interfaces dmd20 universal satellite modem 4-44 tm103 - rev. 1.1 rom map 7 could also be used as the template for an active transmit (drop) and/or active receive (insert) map with a modulator and/or demodulator configured for 1536 kbps operation. This would be used with t1 frames where channels...
Page 93
Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-45 the terminal mode uses eight “screens,” each of which have the basic contents of the three modem monitor and control areas as set in the front panel matrix columns. This screen is used for setting the parameters of the modulator, ...
Page 94
User interfaces dmd20 universal satellite modem 4-46 tm103 - rev. 1.1 each piece of earth station equipment on a control bus has a unique physical address, which is assigned during station setup/configuration or prior to shipment. Valid decimal addresses on one control bus range from 032 through 255...
Page 95
Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-47 : the operation code field contains a number that identifies the message type associated with the data that follows it. Equipment under mcs control recognizes this byte via firmware identification and subsequently steers the data ...
Page 96
User interfaces dmd20 universal satellite modem 4-48 tm103 - rev. 1.1 4.9.1.3 frame description and bus handshaking in a monitor and control environment, every message frame on a control bus port executes as a packet in a loop beginning with a wait-for-syn-character mode. The remaining message forma...
Page 97
Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-49 4.9.1.4 global response operational codes in acknowledgment (response) packets, the operational code field of the message packet is set to 0 by the receiving devices when the message intended for the device is evaluated as valid. ...
Page 98
User interfaces dmd20 universal satellite modem 4-50 tm103 - rev. 1.1 mparm_carrierselection_error 0x0412 mparm_spectrum_error 0x0413 mparm_operatingmode_error 0x0414 mparm_terrloopback_error 0x0415 mparm_baseloopback_error 0x0416 mparm_clockcontrol_error 0x0417 mparm_clockpolarity_error 0x0418 mpar...
Page 99
Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-51 mparm_aupcremoteclaction_error 0x0438 mparm_aupctrackingrate_error 0x0439 mparm_aupcremotebbloopack_error 0x043a mparm_aupcremote2047_error 0x043b mparm_aupcebno_error 0x043c mparm_aupcminpower_error 0x043d mparm_aupcmaxpower_erro...
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User interfaces dmd20 universal satellite modem 4-52 tm103 - rev. 1.1 dparm_autoalarm_error 0x0618 dparm_berexponent_error 0x0619 dparm_circuitid_error 0x061a dparm_terrloopback_error 0x061b dparm_baseloopback_error 0x061c dparm_ifloopback_error 0x061d dparm_interfacetype_error 0x061e dparm_interfac...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-53 for example, if two dmd20 modems with different addresses (destination ids) are linked to the same control bus at the same hierarchical level, both will attempt to respond to the m&c computer when the computer generates a multi-dr...
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User interfaces dmd20 universal satellite modem 4-54 tm103 - rev. 1.1 note that multi-drop override ids 01 or 02 can be used interchangeably to broadcast a message to a dmd-3000/4000 modem, dmd-4500/5000, or a dmd20 modem. Radyne comstream corporation recommends that the multi-drop override ids be i...
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Dmd20 universal satellite modem user interfaces tm103 – rev. 1.1 4-55 4.9.1.8 rllp summary the rllp is a simple send-and-wait protocol that automatically re-transmits a packet whenever an error is detected, or when an acknowledgment (response) packet is absent. During transmission, the protocol wrap...
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User interfaces dmd20 universal satellite modem 4-56 tm103 - rev. 1.1 : message format header character that defines the beginning of a message. The character value is always 0x16 (1 byte). : the number of bytes in the field (2 bytes). : identifies the address of the equipment from where the message...
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Dmd20 universal satellite modem rear panel interfaces tm103 – rev. 1.1 5-1 section 5 – rear panel interfaces this section discusses the electrical interfaces available from the rear panel. All locations are as viewed from the rear of the unit unless otherwise specified. 5.0 dmd20 connections all dmd...
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Rear panel interfaces dmd20 universal satellite modem 5-2 tm103 - rev. 1.1 8 backward alarm out - 4 no escbwo 4no n/a 9 no connection nc --- 10 backward alarm in - 2 escbwi 2 input 11 backward alarm in - 4 escbwi 4 input 12 no connection nc --- 13 no connection nc --- 14 backward alarm out - 1 c esc...
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Dmd20 universal satellite modem rear panel interfaces tm103 – rev. 1.1 5-3.
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Rear panel interfaces dmd20 universal satellite modem 5-4 tm103 - rev. 1.1 5.4 8k data (j3) the 8k data port allows for communications between earth stations. It is a 15-pin female “d” connector. Refer to table 5-3 for pinouts. Table 5-3. 8k data port 15-pin female “d” connector (j3) pin no. Signal ...
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Dmd20 universal satellite modem rear panel interfaces tm103 – rev. 1.1 5-5 9 send data (+) sd-b input 10 no connect --- --- 11 receive data b (+) rd-b output 12 drop data out (-) ddo-a output 13 insert data in (-) exc (-) idi-a input 14 mod-flt --- --- 15 dmd-flt --- --- 5.6 switch interface (j5) th...
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Rear panel interfaces dmd20 universal satellite modem 5-6 tm103 - rev. 1.1 15 idr esc audio input channel 1a escaudtx 1a input 16 idr esc audio input channel 2a escaudtx 2a input 17 idr esc audio output channel 1a escaud rx 1a output 18 idr esc audio output channel 2a escaud rx 2a output 19 idr esc ...
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Dmd20 universal satellite modem rear panel interfaces tm103 – rev. 1.1 5-7 40 idr esc backward alarm out - 2 common escbwo 2c --- 41 synchronous data terminal timing – b sync tt-b --- 42 idr esc backward alarm output - 2 normally open escbwo 2no --- 43 g.703 drop data out - b synchronous data receiv...
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Rear panel interfaces dmd20 universal satellite modem 5-8 tm103 - rev. 1.1 62 idr esc backward alarm out - 4 normally open escbwo 4no --- 63 ibs transmit octet input - b txo -b input 64 synchronous data – data mode out - b sync dm-b output 65 synchronous data - clear to send - b sync cs -b input 66 ...
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Dmd20 universal satellite modem rear panel interfaces tm103 – rev. 1.1 5-9 5.14 rx if (j13) the receive if input port is a 75o female bnc connector that is used for 70/140 mhz if. If the customer orders the 70/140 mhz if, the transmit if output port is a 75o female bnc connector. 5.15 rx l-band if (...
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Rear panel interfaces dmd20 universal satellite modem 5-10 tm103 - rev. 1.1 5.18 async (j17) the asynchronous data interface port is a 9-pin female “d” connector. Refer to table 5-7 for pinouts. Table 5-7. Async port 9-pin female “d” connector (j17) pin no. Signal name signal direction 1 receive dat...
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Dmd20 universal satellite modem rear panel interfaces tm103 – rev. 1.1 5-11 5.20 eia-530 (j19) the eia -530 port is an rs -422/v.35/rs -232 connection. It is a 25-pin female “d” connector. Refer to table 5-9 for pinouts. Table 5-9. Eia-530 port (rs-422/v.35/rs-232) 25-pin female “d” connector (j19) ...
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Rear panel interfaces dmd20 universal satellite modem 5-12 tm103 - rev. 1.1 5.21 remote (j20) the remote port is a rs-485 or rs-232 connection for remote monitor and control of the modem. It is a 9-pin female “d” connector. Refer to table 5-10 for pinouts. Table 5-10. Remote port (rs-485 or rs -232)...
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Dmd20 universal satellite modem rear panel interfaces tm103 – rev. 1.1 5-13.
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Dmd20 universal satellite modem maintenance and troubleshooting tm103 – rev. 1.1 6-1 section 6 – maintenance and troubleshooting this section discusses unit maintenance and troubleshooting for the dmd20 universal satellite modem. The dmd20 contains a lithium battery. Danger of explosion exists if th...
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Maintenance and troubleshooting dmd20 universal satellite modem 6-2 tm103 - rev. 1.1 the receive carrier frequency is outside of the acquisition range. Check that the receive acquisition range is adequate for the possible system offsets (setting the value to 30 khz is a standard value encompassing a...
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Dmd20 universal satellite modem maintenance and troubleshooting tm103 – rev. 1.1 6-3 quality. This alarm will flash on during certain modem parameter changes. A solid indication indicates a problem with the incoming clock to the modem (scte). Txsynth (tx synthesizer) the tx if synthesizer is not loc...
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Maintenance and troubleshooting dmd20 universal satellite modem 6-4 tm103 - rev. 1.1 6.1.1.3 minor tx alarms alarm possible cause action terrclk (terrestrial clock) no terrestrial clock activity. Call the radyne comstream customer service center. Intclk (internal clock) no sct clock activity. Call t...
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Dmd20 universal satellite modem maintenance and troubleshooting tm103 – rev. 1.1 6-5 buf the doppler buffer is about to underflow. Could be caused by poor clocking or satellite fade. Call the radyne comstream customer service center. Buf >90% the doppler buffer is about to overflow. Could be caused ...
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Maintenance and troubleshooting dmd20 universal satellite modem 6-6 tm103 - rev. 1.1 e1 fas (e1 frame acquisition sync) an e1 fas fault occurred. Valid in pcm-30, or pcm-30c, pcm- 31, or pcm -31c modes. Call the radyne comstream customer service center. E1 mfas (e1 multi- frame acquisition sync) an ...
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Dmd20 universal satellite modem maintenance and troubleshooting tm103 – rev. 1.1 6-7 when an alarm is masked, the front panel leds and the fault relays do not get asserted, but the alarm will still be displayed. This feature is very helpful during debugging or to lock out a failure that the user is ...
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Maintenance and troubleshooting dmd20 universal satellite modem 6-8 tm103 - rev. 1.1 figure 6-10. Ibs alarm concept 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...
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Dmd20 universal satellite modem maintenance and troubleshooting tm103 – rev. 1.1 6-9 fault detected from satellite (across interface e) fa1 - loss of satellite signal input fa2 - loss of satellite frame fa3 - loss of satellite multiframe fa4 - ber of 1e-3 or greater from satellite input fa5 - alarm ...
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Maintenance and troubleshooting dmd20 universal satellite modem 6-10 tm103 - rev. 1.1.
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Dmd20 universal satellite modem technical specifications tm103 – rev. 1.1 7-1 section 7 – technical specifications 7.0 data rates bpsk uncoded 4.8 kbps to 10.0 mbps 1/2 rate bpsk 2.4 kbps to 5.0 mbps 3/4 rate bpsk 3.6 kbps to 7.5 mbps 7/8 rate bpsk 4.2 kbps to 8.75 mbps qpsk uncoded 9.6 kbps to 20.0...
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Technical specifications dmd20 universal satellite modem 7-2 tm103 - rev. 1.1 return loss if, 20 db minimum l-band, 14 db minimum spectrum intelsat iess 308/309/310 compliant input level 10 x log (symbol rate) – 100, ±12 db adjacent channel rejection ratio >+10 dbc total input power -10 dbm or +40 d...
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Dmd20 universal satellite modem technical specifications tm103 – rev. 1.1 7-3 7.7 terrestrial interfaces a variety of standard interfaces are available for the dmd20 modem in stand-alone applications. 7.8 idr/esc interface (optional) g.703 t1 (dsx1) 1.544 mbps, 100o balanced, ami and b8zs g.703 e1 2...
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Technical specifications dmd20 universal satellite modem 7-4 tm103 - rev. 1.1 qpsk 5/6 n/a n/a qpsk 7/8 8400 17500000 qpsk 495 4752 9900000 qpsk 793 7612.8 15860000 bpsk 5/6 n/a n/a oqpsk none 9600 20000000 oqpsk 1/2 4800 10000000 oqpsk 2/3 n/a n/a oqpsk 3/4 7200 15000000 oqpsk 5/6 n/a n/a oqpsk 7/8...
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Dmd20 universal satellite modem technical specifications tm103 – rev. 1.1 7-5 7.13 dmd20 ber specifications 7.13.1 modem ber performance (viterbi) specification typical ibs idr idr ibs ibs idr idr 1/2 rate 3/4 rate 7/8 rate 1/2 rate 3/4 rate 3/4 rate 7/8 rate 10 -3 4.1 db 5.2 db 6.2 db 3.25 db 4.2 d...
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Technical specifications dmd20 universal satellite modem 7-6 tm103 - rev. 1.1 7.13.4 sequential decoder ber performance (1.544 mbps) ber specification typical 1/2 rate 3/4 rate 7/8 rate 1/2 rate 3/4 rate 7/8 rate 10 -3 4.8 db 5.2 db 6.0 db 4.3 db 4.7 db 5.5 db 10 -4 5.2 db 5.7 db 6.4 db 4.7 db 5.2 d...
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Dmd20 universal satellite modem technical specifications tm103 – rev. 1.1 7-7 7.13.7 16 qam ber performance (viterbi decoder w/ reed-solomon) specification typical ber 1/2 3/4 7/8 1/2 3/4 7/8 10 -3 n/a 8.4 db 9.8 db n/a 7.8 db 9.3 db 10 -4 n/a 8.6 db 10.1 db n/a 8.1 db 9.6 db 10 -5 n/a 8.9 db 10.3 d...
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Technical specifications dmd20 universal satellite modem 7-8 tm103 - rev. 1.1 figure 7-2. Concatenated reed-solomon figure 7-3. 8psk with and without reed solomon codec.
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Dmd20 universal satellite modem technical specifications tm103 – rev. 1.1 7-9 figure 7-4. 56 kbps sequential figure 7-5. 1.544 mbps sequential.
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Technical specifications dmd20 universal satellite modem 7-10 tm103 - rev. 1.1.
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Dmd20 universal satellite modem appendix a tm103 – rev. 1.1 a-1 appendix a – product options a.0 hardware options the following enhanced interface cards are available. A.0.1 g.703/idr esc interface the dmd20 can be equipped with a g.703/idr esc interface. A.0.2 turbo card the dmd20 can be equipped w...
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Appendix a dmd20 universal satellite modem a-2 tm103 - rev. 1.1.
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Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-1 appendix b – remote operations 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 ...
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Appendix b dmd20 universal satellite modem b-2 tm105 – rev. 1.1 query demodulator status 240ch query modem eb/no, ber and level 240dh query time 240eh query date 240fh query time and date 2410h query modem summary faults 2411h command opcode command modem control mode 2600h command modulator configu...
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Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-3 command modulator external exc clock 261ah command modulator external reference frequency 261bh command modulator t1 d4 yellow alarm selection 261dh command modulator interface type 261eh command modulator circuit id 261fh command force...
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Appendix b dmd20 universal satellite modem b-4 tm105 – rev. 1.1 command demodulator descrambler type 2a0eh command demodulator spectrum 2a0fh command demodulator buffer size 2a10h command demodulator buffer clock 2a11h command demodulator buffer clock polarity 2a12h command demodulator insert mode 2...
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Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-5 b.0.2 detailed command descriptions b.0.2.1 dmd20 modulator opcode: query a modulator's configuration and status query response number of nonvol bytes network spec frequency strap code filter mask data rate external exc clock external r...
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Appendix b dmd20 universal satellite modem b-6 tm105 – rev. 1.1 scrambler control scrambler type transmit power level differential encoder carrier control carrier selection spectrum operating mode clock control clock polarity sct source framing drop mode drop map t1d4 yellow alarm sel. 0 = disable, ...
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Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-7 forced alarms alarm1mask alarm2mask common alarm1mask common alarm2mask tx circuit id tx esc ch1 volume tx esc ch2 volume tx interface type tx terrestrial loopback tx baseband loopback drop status mask tx rs n code tx rs k code (0 = non...
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Appendix b dmd20 universal satellite modem b-8 tm105 – rev. 1.1 tx rs depth data invert bpsk symbol pairing idr overhead type terminal emulation terminal baud rate fm orderwire mode fm orderwire test tone aupc local enable aupc remote enable aupc local cl action aupc remote cl action aupc tracking r...
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Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-9 aupc target eb/no aupc minimum power aupc maximum power aupc nominal power target eb/no at receiver singed value +50 to –200 with implied decimal point; 49 = +4.9 dbm singed value +50 to –200 with implied decimal point; 49 = +4.9 dbm si...
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Appendix b dmd20 universal satellite modem b-10 tm105 – rev. 1.1 alarm 3 aupc remote test 2047 aupc remote test 2047 ber exponent reserved symbol rate bit 0 = backward alarm 1 transmitted bit 1 = backward alarm 2 transmitted bit 2 = backward alarm 3 transmitted bit 3 = backward alarm 4 transmitted b...
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Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-11 +12v voltage -12v voltage temperature alarm 3 aupc remote test 2047 ber mantissa aupc remote test 2047 ber exponent reserved symbol rate +12v. Implied decimal point. Ex: 121 = +12.1 v -12v. Implied decimal point and minus sign. Ex: 118...
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Appendix b dmd20 universal satellite modem b-12 tm105 – rev. 1.1 opcode: command a modulator's configuration network spec. Frequency strap code filter mask data rate external exc clock external reference freq. Reference source modulation type convolutional encoder reedsolomon scrambler control 0 = c...
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Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-13 scrambler type transmit power level differential encoder carrier control carrier selection spectrum operating mode clock control clock polarity sct source framing drop mode drop map t1d4 yellow alarm sel. 0 = none 1 = ibs scrm. 2 = v35...
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Appendix b dmd20 universal satellite modem b-14 tm105 – rev. 1.1 forced alarms alarm1 mask alarm2 mask common alarm1 mask common alarm2 mask tx circuit id tx esc ch1 volume tx esc ch2 volume tx interface type tx terrestrial loopback tx baseband loopback drop status mask tx reedsolomon tx reedsolomon...
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Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-15 tx reedsolomon data invert bpsk symbol pairing idr overhead type terminal emulation terminal baud rate fm orderwire mode fm orderwire test tone aupc local enable aupc remote enable aupc local cl action aupc remote cl action aupc tracki...
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Appendix b dmd20 universal satellite modem b-16 tm105 – rev. 1.1 aupc target eb/no aupc minimum power aupc maximum power aupc nominal power target eb/no at receiver singed value +50 to –200 with implied decimal point; 49 = +4.9 dbm singed value +50 to –200 with implied decimal point; 49 = +4.9 dbm s...
Page 156
Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-17 opcode: command a modulator's convolutional encoder convolutional encoder 0 = none 1 = viterbi 1/2 rat e 2 = viterbi 2/3 rate 3 = viterbi 3/4 rate 4 = viterbi 5/6 rate 5 = viterbi 7/8 rate 6 = viterbi 8/9 rate 7 = sequential 1/2 rate 8...
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Appendix b dmd20 universal satellite modem b-18 tm105 – rev. 1.1 opcode: command a modulator's drop mode drop mode 0 = disabled 1 = t1 -d4 2 = t1-esf 3 = pcm-30 4 = pcm-30c 5 = pcm-31 6 = pcm-31c 7 = slc-96 8 = t1 d4 s 9 = t1 esf s opcode: command a modulator's output level transmit power levelsigne...
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Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-19 opcode: command a modulator's baseband loopback baseband loopback 0 = disable, 1 = enable opcode: command a modulator's mode mode 0 = closed net. 1 = idr, 2 = ibs, 3 = d&i opcode: command a modem's external exc clock external exc clock...
Page 159
Appendix b dmd20 universal satellite modem b-20 tm105 – rev. 1.1 opcode: command aupc remote cl action aupc remote cl action 0 = hold, 1 = nominal, 2 = maximum opcode: command aupc tracking rate aupc tracking rate 0 = 0.5 db/min. 1 = 1.0 db/min. 2 = 1.5 db/min. 3 = 2.0 db/min. 4 = 2.5 db/min. 5 = 3....
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Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-21 opcode: command aupc local configuration aupc local enable aupc local cl action aupc tracking rate aupc remote cl action aupc eb/no aupc min power aupc max. Power aupc nominal power 0 = off, 1 = on 0 = hold, 1 = nominal, 2 = maximum 0 ...
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Appendix b dmd20 universal satellite modem b-22 tm105 – rev. 1.1 b.0.2.2 dmd20 demodulator opcode: query a demodulator's configuration and status query response number of nonvol bytes network spec. Frequency sweep delay data rate sweep boundary input level limit strapcode filter mask demodulation ty...
Page 162
Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-23 descrambler control descrambler type spectrum buffer size msec buffer clock buffer clock polarity insert mode t1e1 frame source insert map framing operatingmode map summary to backward alarm 0 = disable, 1 = enable 0 = none 1 = ibs scr...
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Appendix b dmd20 universal satellite modem b-24 tm105 – rev. 1.1 forced alarms alarm1 mask alarm2 mask alarm3 mask alarm4 mask common alarm1 mask common alarm2 mask esc channel1 volume esc channel2 volume ber exponent rx circuit id rx terrestrial loopback rx baseband loopback rx if loopback rx inter...
Page 164
Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-25 insert status mask rx reedsolomon n code rx reedsolomon k code rx reedsolomon depth external clock source data invert alarm 5 masks bpsk symbol pairing es mode es type es baud es data bits idr overhead type fm orderwire mode bit 0 = fr...
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Appendix b dmd20 universal satellite modem b-26 tm105 – rev. 1.1 common alarm2 latched alarm1 latched alarm2 latched alarm3 latched common alarm1 latched common alarm2 backward error counter test 2047 error counter raw ber mantissa corrected ber mantissa ebno offset frequency test 2047 ber mantissa ...
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Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-27 ber/ebno status buffer percent full input level insert status fault online flag loss flag alarm5 reserved symbol rate bit0 = raw ber and corrected ber status. 1 = valid bit1 = test 2047 ber status. 1 = valid bits 2 - 3 = ebno status, 0...
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Appendix b dmd20 universal satellite modem b-28 tm105 – rev. 1.1 latched alarm1 latched alarm2 latched alarm3 latched common alarm1 latched common alarm2 backward error counter test 2047 error counter raw ber mantissa corrected ber mantissa ebno offset frequency test 2047 ber mantissa raw ber expone...
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Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-29 ber/ebno status buffer percent full input level insert status fault online flag loss flag alarm5 reserved symbol rate bit0 = raw ber and corrected ber status. 1 = valid bit1 = test 2047 ber status. 1 = valid bits 2-3 = ebno status, 0 =...
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Appendix b dmd20 universal satellite modem b-30 tm105 – rev. 1.1 opcode: query a demodulator's current alarms query response alarm1 alarm2 alarm3 alarm4 insert status fault common alarm1 common alarm2 tbd tbd tbd tbd tbd tbd tbd opcode: command a demodulator's configuration network spec. Frequency s...
Page 170
Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-31 convolutional decoder reedsolomon differential decoder descrambler control descrambler type spectrum buffer size msec buffer clock buffer clock polarity 0 = none 1 = viterbi 1/2 rate 2 = viterbi 2/3 rate 3 = viterbi 3/4 rate 4 = viterb...
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Appendix b dmd20 universal satellite modem b-32 tm105 – rev. 1.1 insert mode t1e1 frame source insert map framing operating mode map summary to backward alarm forced alarms alarm1 mask alarm2 mask alarm3 mask alarm4 mask common alarm1 mask common alarm2 mask esc channel1 volume 0 = disabled 1 = t1 -...
Page 172
Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-33 esc channel 2 volume ber exponent rx circuit id rx terrestrial loopback rx baseband loopback rx if loopback rx interface type insert status mask rx reedsolomon n code rx reedsolomon k code rx reedsolomon depth external clock source dat...
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Appendix b dmd20 universal satellite modem b-34 tm105 – rev. 1.1 es mode es type es baud es data bits idr overhead type fm orderwire mode 0 = normal, 1 = enhanced 0 = rs-232, 1 = rs-485 0 = 150. 1 = 300, 2 = 600, 3 = 1200, 4 = 2400, 5 = 4800, 6 = 9600 0 = 7. 1 = 8 0 = 32k voice. 1 = 64k data 0 = dis...
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Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-35 opcode: command a demodulator's differential decoder differential decoder 0 = off, 1 = on opcode: command a demodulator's reedsolomon reedsolomon 0 = disable, 1 = enable opcode: command a demodulator's mode mode 0 = closednet. 1 = idr,...
Page 175
Appendix b dmd20 universal satellite modem b-36 tm105 – rev. 1.1 opcode: command a demodulator's t1e1 frame source t1e1 frame source 0 = internal, 1 = external opcode: command a demodulator's framing framing 0 = no framing, 1 = 96k, 2 = 1/15, 3 = ef aupc 1/15 opcode: command a demodulator's operatin...
Page 176
Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-37 opcode: command a demodulator's interface type rx interface type 0 = g703-b-t1_ami 1 = g703-b-t1_b8zs 2 = g703-b-e1 3 = g703-b-t2 4 = g703-u-e1 5 = g703-u-t2 6 = g703-u-e2 7 = rs-422 8 = v.35 9 = rs-232 opcode: command center buffer (n...
Page 177
Appendix b dmd20 universal satellite modem b-38 tm105 – rev. 1.1 opcode: query a modem's latched alarms query response mod latched alarm1 demod latched alarm1 demod latched alarm2 demod latched alarm3 latched common alarm1 latched common alarm2 tbd tbd tbd tbd tbd tbd opcode: query a modem's current...
Page 178
Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-39 insert status fault common alarm1 common alarm2 bit 0 = frame lock fault. 1 = fail bit 1 = multiframe lock fault. Valid in e1 pcm-30 and pcm - 30c. 1 = fail bit 2 = crc lock fault. Valid in t1esf, and e1 crc enabled. 1 = fail bit 3 = t...
Page 179
Appendix b dmd20 universal satellite modem b-40 tm105 – rev. 1.1 opcode: query date year month day 0 - 99 0 - 11 0 - 30 opcode: query time and date hour minute second year month day 0 - 23 0 - 59 0 - 59 0 - 99 0 - 11 0 - 30 opcode: query modem summary faults mod summary fault demod summary fault 0 =...
Page 180
Dmd20 universal satellite modem appendix b tm105 – rev. 1.1 b-41 opcode: command drop and insert map map to change new map 0 = drop active map 1 = insert active map 2 = drop edit map 3 = insert edit map 4 - 11 = user map #1 through #8 opcode: command clear latched alarms (no parameters) opcode: comm...
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Appendix b dmd20 universal satellite modem b-42 tm105 – rev. 1.1.
Page 182: Appendix C – Snmp Mib
Dmd20 universal satellite modem appendix c tm105 – rev. 1.1 c - 1 appendix c – snmp mib tbd.
Page 183
Appendix c dmd20 universal satellite modem c-2 tm105 – rev. 1.1.
Page 184: Glossary
Dmd20 universal satellite modem glossary tm105 – rev. 1.1 g-1 glossary 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. Ansi american national standards institute ascii american standard cod...
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Glossary dmd20 universal satellite modem g-2 tm105 – rev. 1.1 d dac digital to analog converter db decibels dbc decibels referred to carrier dbm decibels referred to 1.0 milliwatt dc direct current demod demodulator or demodulated dpll digital phase locked loop dvb digital video broadcast d&i drop a...
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Dmd20 universal satellite modem glossary tm105 – rev. 1.1 g-3 i ibs intelsat business services idr intermediate data rate i/o input/output ieee international electrical and electronic engineers iess intelsat earth station standards if intermediate frequency intelsat international telecommunication s...
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Glossary dmd20 universal satellite modem g-4 tm105 – rev. 1.1 n nc normally closed no normally open ns nanoseconds nvram non-volatile random access memory n/c no connection or not connected o oqpsk offset quadrature phase shift keying p pc personal computer pd buffer plesiochronous/ doppler buffer p...
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Dmd20 universal satellite modem glossary tm105 – rev. 1.1 g-5 t tbd to be designed or to be determined tm technical manual tpc turbo product codes tre trellis tx transmit (transmitter) txd transmit data u uart universal asynchronous receiver/transmitter uut unit under test v v volts vac volts, alter...
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Glossary dmd20 universal satellite modem g-6 tm105 – rev. 1.1.