Comtech EF Data DMD-2050E Installation And Operation Manual

Text of Comtech EF Data DMD-2050E User Guide:

• Comtech EF Data DMD-2050E, DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–17 On the Monitor & Control, Password Setup or IP Administration windows, some fields may be blank or contain Update. To correct the display, change the encoding. NOTE If you leave a window and return, it may be necessary to correct the display again.

• DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–16 D.6.4.2 Reset the Ethernet M&C port To reset the Ethernet M&C port, either 1) cycle the electrical power OFF and ON, or, 2) re-enter the Modem IP Address. Re-entering the Modem IP Address avoids traffic disruption. D.6.4.3 Re-enter the Modem IP address 1. Go to SYSTEM / TCP/IP

• Comtech EF Data DMD-2050E, DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–7 7.11.2 DVB DVB Data Rate Limits Modulation Code Rate DVB Mode Min Data Rate Max Data Rate BPSK VIT 1/2 187 Mode 2400 4583333 BPSK 188 Mode 2400 4607843 BPSK 204 Mode 2400 5000000 BPSK VIT 2/3 187 Mode 2934 6111111 BPSK 188 Mode 2950 6143790 BPSK 204 Mode 3200 6666666 BPSK VIT 3/4 187 Mode 3300 6875000 BPSK 188 Mode 3318 6911764 BPSK 204 Mode 3600 7500000 BPSK VIT 5/6 187 Mode 3667 7638888 BPSK 1

• Comtech EF Data DMD-2050E, DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E viii 4.5 Terminal Mode Control............................................................................................................ 4–38 4.5.1 Terminal Mode Screens ...................................................................................................... 4–38 4.5.2 Terminal Mode Operations .................................................................................................

• Comtech EF Data DMD-2050E, DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–13 4.4.1.8 REMOTE AUPC (menu) NOTE Remote AUPC Menus are available only when the modem is configured for EF AUPC. REMOTE AUPC MENU AUPC MODE {DISABLE,NEAR SIDE, EFDATA} Enable or disable the AUPC Function of the remote modem. The remote AUPC Function is the response of the local modem to commands for an increase or decrease of the Transmit Power in 0.5 dB steps and the command to change to the setting indicated in the 'REMOTE CL ACTION' Menu of the remote modem upon receiver loss of lock. LOOPBACK {DISABLE, ENABLE} Enable o

• Comtech EF Data DMD-2050E, DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–10 4.4.1.7 LOCAL AUPC (menu) NOTE When modems are configured for Radyne AUPC, the remote Eb/No is displayed in the Monitor Menus. LOCAL AUPC MENU AUPC MODE {DISABLED, NEAR SIDE, RADYNE, EFDATA} DISABLED : Enable or disable the Local AUPC Function of the local modem. EBEM: Enables EBEM Local AUPC Function. In the event the remote demodulator losses lock, the local output power level will adjust itself to the nominal level. This nominal power should be set to a level high enough to re-establish communications regardless of rain fade. EFDATA : Enables EFDA

• DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–14 8PSK 2/3 {NOT SELECTED, SELECTED} Used to select the mod/code rate 8PSK 3/4 {NOT SELECTED, SELECTED} Used to select the mod/code rate 8PSK 7/8 {NOT SELECTED, SELECTED} Used to select the mod/code rate 8PSK 19/20 {NOT SELECTED, SELECTED} Used to select the mod

• Comtech EF Data DMD-2050E, DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–4 J.1.2.1 Initial DMD2050E Modem Setup Table J-2 - Initial Modem Setup FW: F05280-AH28 REV 4.4.28 (7/06 9:47) MAIN MENU MENU OPTION PARAMENTER VALUE PARAMENTER VALUE INTERFACE TX S ETUP TE RR INTE RFA CE MIL-188-114A TERR INTE RFACE MIL-188-114A INTERFACE RX SETUP TERR INTERFACE MIL-188-114A TERR INTERFACE MIL-188-114A MODULATOR NETWORK-SPEC NETWORK SPEC EBEM NETWORK SPEC EBEM MODULATOR IF FREQUENCY (MHz) 137

• Comtech EF Data DMD-2050E, DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–23 This would be used with T1 frames where channels 1 through 24 are mapped into time slots 1 through 24 (in any order). Map slots 25 through 30 would be ignored. ROM Map 8 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 1920 Kbps operation. However, this mapping would be relevant with E1 frames where time slot 16 is used for the multiframe alignment signal and therefore channels 1 through 30 are mapped to time slots 1 through 16 and 17 through 31. E.7 Efficient Drop and Insert

• DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–19 Figure J-8 - Initial Setup DMD2050E, Demodulator ITA To setup ITA Mode first select all the appropriate waveforms you are intending to run. Waveforms marked “unattainable” are not allowed because the current symbol rate cannot be obtained based on the current serial rate selected, in other wor

• Comtech EF Data DMD-2050E, DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–5 The M&C System is based on a powerful microprocessor with a large amount of Flash memory. Several bus architectures are used to interconnect the M&C to all components of the DMD2050E. Communication to the outside world is done via connections to the remote port, terminal port, Ethernet port, and alarm ports. The M&C runs off software programmed into its Flash memory. The memory can be reprogrammed via the Ethernet port to facilitate changes in software. 3.1.3 Enhanced Interface Printed Circuit Card The normal terrestrial data for the Baseband Processing Card

• Comtech EF Data DMD-2050E, DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–12 The ITA Menu Functions and their descriptions are shown in Table J-4 and Table J-5. Table J-4. Transmit ITA Functions Function ITA Available Options Description ITA Option {DISABLED, ENABLED} Enable or disable the ITA Function. BPSK 1/2 {NOT SELECTED, SELECTED} Used to select the mod/code rate BPSK 2/3 {NOT SELECTED, SELECTED} Used to select the mod/code rate BPSK 3/4 {NOT SELECTED, SELECTED} Used to select the mod/co

• Comtech EF Data DMD-2050E, DMD2050E Universal Satellite Modem External Connections MN-DMD2050E Revision 2 5–2 5.1 Power Connectors, Ground and Switches The DMD2050E units have either AC or DC power connectors (see Figure 5-3). Power Type Location Prime Power Maximum Power Consumption AC Rear panel 100 – 240 VAC, 50 – 60 Hz 1A DC Rear panel 48V ± 5VDC 3A Table 5-1. Pinouts for DC Power Connector Pin Description A – B Ground C + 5.1.1 Ground Connector A chassis ground connector (#10-32 threaded stud), is adjacent to the power connector. CAUTION: CORRECT GROUNDING PROTECTION REQUIRED: Always make sure the ground stud on the rear panel of the unit is

• Comtech EF Data DMD-2050E, DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–30 Figure J-19 –DMD2050E I/Q for 16APSK 7/8 At this point changing the noise source level will dynamically change the selected waveforms. You can simulate fades by attenuating the receive signal to the system.

• Comtech EF Data DMD-2050E, DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–35 Unwanted interfering signal suppression of 30 dB or more has been achieved in commercial products with minimal degradation of the demodulator performance. 3.11.6 Margin Requirements Typical interfering signal cancellation is 28 to 35 dB (depending on the product). The residual interfering signal appears as noise causing a slight degradation of the Eb/No. To compensate for the residual noise, a small amount of additional link margin is required to maintain the BER. Margin requirements depend on the product, modulation and power ratios. For the DMD2050E, the addit

• Comtech EF Data DMD-2050E, DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–4 Figure 3-3. DMD2050E 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 adjustment of some functions  Calibration  Monitoring fault status  Calculating and displaying measurements  Calculations  Monitor and control interface, including front panel and remote  Configuration and feature set for the unit

• Comtech EF Data DMD-2050E, MN-DMD2050E Revision 2 K–3 ER-DMD2050E-EE2 Rev - Modulation Code Rate Data Rate Range (kbps) DMD20 / DMD20 LBST HW1 + HW6 DMD1050 / DMD1050T / DMD1050TS HW3 + HW8 OM20 HW1 + HW6 Data Rate Range (kbps) DMD50 / DMD2050 HW2 + HW7 DMD2050E / DMD2050EU HW2 + HW7 + HW24 Viterbi + RS 3/4 14.4 – 20,000 * R / N 16QAM + RS Feature 16QAM + RS Feature 16QAM + RS Feature 14.4 – 52,000 16QAM + RS Feature Standard 7/8 16.8 – 20,000 * R / N 16QAM + RS Feature 16QAM + RS Feature 16QAM + RS Feature 16.8 – 52,000 16QAM + RS Feature Standard DVB Modes

• Comtech EF Data DMD-2050E, DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–26 NOTE Port status indicators are: Down: The link is down. Unresolved: Unable to agree on connection speed. 10 Mbps Half: Connected at 10 Base-T Half Duplex. 10 Mbps Full: Connected at 10 Base-T Full Duplex. 100 Mbps Half: Connected at 100 Base-T Half Duplex. 100 Mbps Full: Connected at 100 Base-T Full Duplex. Not used: The port is not available.

• DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–8 DATA MENU TERR FRAMING {NONE, 188, 204} DVB Only DATA POLARITY {INV. TERR & BASE, INV. BASEBAND, INV.TERR DATA, NONE} Invert the Tx Data polarity. BPSK SYMBOL PAIR {NORMAL, SWAPPED} BPSK Mode Only Swap the I & Q Channels. ESC OVERHEAD {VOICE X2, DATA 64KBPS}

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Comtech EF Data DMD-2050E Installation and operation manual 06-06-2023 342

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