Table A-17. Ibs Specification - Comtech EF Data SLM-3650 Installation And Operation Manual

SLM-3650 Satellite Modem
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A.1.7.1 IBS Specifications
Refer to Table A-17 for IBS specification.
Parameter
Composite Data Rates Supported
Primary Data Circuits Supported
Earth Station-to-Earth Station Channel
Octet Clock Pulse
Circuit Supported
Amplitude (RD, RTS)
Amplitude (TD, DSR, CTS)
Impedance
Baud Rate
Modulator Fault
Demodulator Fault
Backward Alarms
Backward Alarm Output
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Table A-17. IBS Specification

N x 64 kbps from 64 kbps to 2048 kbps, with 1/15 overhead
G.703 1.544 Mbps SD, RD
G.703 2.048 Mbps SD, RD
EIA-422/449, V.35
Engineering Service Channel
EIA-232 TD, RD, DSR, RTS
Asynchronously sampled at 1/2000 of the primary channel data rate. Data rate
is 1/512 of primary data if an EIA-232 clock is provided.
Data rate ÷ 8
Octet high with every 8th bit
EIA-232 Specification
RD, TD, DSR, RTS, CTS
True: 14V ± 11V
False: -14V ± 11V
True: 11V ± 2V
False: -11V ± 2V
5000 ± 2000Ω < 2500 pF
Max: 1/2000 times the data rate
Faults
Open collector output, 15V maximum, 20 mA maximum current sink
Fault is open circuit
Open collector output, 15V maximum, 20 mA maximum current sink
Fault is open circuit
Primary and secondary alarms
Form C contacts available
A–54
Specification
Revision 3
MN/SLM3650.IOM