Comtech EF Data SDM-650B Installation And Operation Manual page 30

Satellite modem
Table of Contents

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Introduction
Input Power:
Input Impedance
Input Return Loss
Carrier Acquisition Range
Clock Acquisition Range
Serial Interface
Baud Rate
Signals Controlled/Monitored
Configuration Retention
Addressing
Local control of all remote functions included via push-button entry.
1–6
Additional Demodulator Specifications
Desired Carrier
Composite
-30 to -55 dBm.
+30 dB power within 20 MHz from desired carrier.
+40 dB power outside of 20 MHz from desired
carrier.
0 dBm maximum composite.
75
.
20 dB.
±
25 kHz minimum.
±
100 PPM.
Remote Control Specifications
RS-232-C, or RS-485.
300 to 9600 bit/s.
Transmit Frequency.
Receive Frequency
Transmit Power.
Transmitter ON/OFF.
Data Rate Select.
RF Loopback.
IF Loopback.
Data Loopback.
Scrambler ON/OFF.
Descrambler ON/OFF.
Raw Error Rate.
Corrected BER.
Receive E
/N
.
b
0
TX Clock Internal/External.
RX Clock Normal/Invert.
Receive Signal Level.
Receive Carrier Detect.
Power Supply Voltages.
Stored Fault Status.
Will maintain current configuration for 30 days
minimum without power.
Programmable to 1 of 255 possibilities. Address 0
reserved for global addressing.
SDM-650B Satellite Modem
Rev. 5

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