Definition Of Interface/M&C Functions; Additional Features - Comtech EF Data SLM-7650 Installation And Operation Manual

SLM-7650 Satellite Modem
Introduction
1.2.3 Definition of Interface/M&C Functions
The interface/M&C section consists of a device having the following identifiable
functions:
1. Terrestrial Interface, defined by EIA-422 (balanced circuits) [MIL-STD-188-114A
Type II and III compatible].
2. Multiplex/Demultiplex an asynchronous data channel onto the primary data channel.
3. Provide Intelsat compatible Overhead Framing for Open Network interoperability.
4. Provide a buffer that can be clocked by the Tx, terrestrial source, an external
reference, internal clock, or from the recovered clock from the satellite link.
5. Monitor the modem status without interrupting service
6. Provide an interface for control of the modem parameters via the front panel or serial
remote control interface
1.2.4

Additional Features

The modem contains the following additional features:
•
Fully Accessible System Topology (FAST)
•
Built-in self test (BIST)
•
Asymmetrical loop timing (ASLT)
•
Selectable near or far end, baseband loopback with ASYNC overhead option enabled
•
Intelsat compliant Reed-Solomon Codec
•
ASYNChronous Channel Unit Overhead (ASYNC)
•
Automatic Uplink Power Control (AUPC)
•
Turbo Product Code (TPC) Forward Error Correction (FEC) (Hardware Option)
•
G.703 Optional Interface with Overhead Card (AS/10175), 50-pin interface and
access to IESS ESC
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Revision 4
MN/SLM7650.IOM