Comtech EF Data SNM-1002 - Manual (Page 21)

SNM-1002 LinkSync™ Modem Revision 2
Introduction MN/SNM1002.OM
1–3
Figure 1-3. Typical LinkSync Redundancy
1.2.1 Description
The modem contains:
Built-in scramblers/descramblers TX and RX frequency synthesizers
Differential encoder/decoder Multi-rate FEC convolutional Viterbi Decoder
The modem is a complete, self-contained unit in a standard, one-rack unit (1 RU), 19-
inch (48 cm), rack-mountable enclosure weighing approximately 9 lbs. (4 kg). The unit
was constructed using modular design (Figure 1-4), 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