Modem Construction; Figure 1-2. Modular Design - Comtech EF Data SLM-3650 Installation And Operation Manual

SLM-3650 Satellite Modem
Introduction
1.1.3

Modem Construction

The modem contains:
Built-in
scramblers/descramblers
Differential encoder/decoder
The modem is a complete, self-contained unit in standard, one-rack unit (1 RU), 19-inch
(48 cm), rack-mountable enclosure weighing approximately 11 lbs (5 kg). The unit is
constructed using modular design (Figure 1-2), and consists of from two to five Printed
Circuit Boards (PCBs), depending on the configuration. The modem consists of two
major replaceable assemblies as follows:
•
Rear panel, main PCB, and power supply
•
Upper and lower enclosures (chassis) and the front panel
The front panel of the modem contains all Monitor and Control (M&C) function
indicators used for operating the modem. The modem can be operated remotely via the
M&C connection on the rear panel. Refer to Chapter 2 for connector information and
Appendix B for remote control operation information.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
TX and RX frequency synthesizers
Multi-rate FEC convolutional Viterbi and Sequential Decoder

Figure 1-2. Modular Design

1–5
Revision 3
MN/SLM3650.IOM