Remote Port And M&C Specifications - Comtech EF Data SDM-2020 Installation And Operation Manual

Satellite demodulator
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Introduction
1.3.3
Remote Port and M&C Specification
Refer to Table 1-8 for remote port and M&C specifications.
M&C Port Remote Control:
ASYNC Serial Interface
Baud Rate
Serial Format
Data Bits
Stop Bits
Remote Port Addressing
Control Items:
Status
Faults (Continued)
Alarms
Configuration Retention
Stored Configurations
1–10
Table 1-9. Remote Port and M&C Specifications
Remote Port and M&C Specifications
EIA-485 (2/4-wire) or EIA-232
300, 600, 1200, 2400, 4800, 9600, or 19200 bit/s
ASCII
8 bit/s with no parity; 7 bit/s with odd/even parity bit
2
Range: 1 to 255
Data Rate
Symbol Rate
Framing Type (None, 188, 204)
Clock and data phase
Modulation Type: QPSK, 8PSK, 16QAM
Code Rate
BER Threshold (None, 1 x10
E
/N
Threshold (None, 3.0 to 16.0 dB)
b
0
RX IF Frequency
All Configuration Items
Spectral Inversion = Normal or Inverted
RX Frequency Tracking
RX Input Level (dBm)
LNB Current Over/Under Limits
Carrier detect (Viterbi)
IF synthesizer fault
I or Q channel loss of activity
BER threshold, except NONE
FIFO full/empty (interface, where applicable)
Non-volatile
10 save and 10 recall
SDM-2020 Satellite Demodulator
2047 Pattern
Data Loopback (Where applicable)
Scrambler On/Off (Test Mode)
RS Correction On/Off
DC On/Off (L-Band only)
Min. Current limit (Max. Current Limit)
-3
-8
to 1x 10
)
Max. Current limit 1 to 1000 mA
Date and Time
Display contrast
Corrected BER
Raw BER
E b /N 0
LNB current monitor
Module Fault
Frame Sync Loss
Interface PLLs not locked (where
applicable)
Note: See Appendix B for a complete
listing of remote port commands and status
items.
Rev. 3

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