Comtech EF Data CDM-760 - Manual (Page 29)

Introduction Revision 2
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
1–3
1.2 Features
1.2.1 Physical Description
The CDM-760 Advanced High-Speed Trunking Modem is constructed as a 1RU-high rack-
mounting chassis. Handles at the front allow easy placement into and removal from a rack. The
unit can be free-standing if desired.
Physically, the modem is modular in design and is comprised of four major card assemblies, with
an internal expansion slot on the modem card that accepts other option cards such as Carrier-in-
Carrier (CnC) and K4 GZip lossless compression. Two Plug-In Interface Card (PIIC) slots are
provided on the modem rear panel to implement a variety of data interface options; this space
is also available to accommodate the optional High-Speed Packet Processor card.
1.2.1.1 Standard Assemblies
Assembly Description Where Installed
PL-0000596 Chassis (AC)
In chassis (top cover
access)
PL-0021161 Main Card Baseband Card (includes Ethernet Interfaces)
PL-0021262 Modulator Encoder Card / RF Front End
PL-0021263 Digital Demodulator / Decoder Card
PL-0000626 PIIC Motherboard Assembly
KT-0000150 AC Power Supply for modem (not BUC)
1.2.1.2 Optional Assemblies
Assembly Description Where Installed
PL-0000572 Carrier-in-Carrier Card In chassis (top cover access), modem card plug-in
KT-0020958 High-Speed Packet Processor
In chassis (top cover access) – Kit replaces PIICs, PIIC
motherboard, plug-in card; provided faceplate replaces
PIIC Slots 1 and 2 chassis covers.
PL-0000635 K4 GZip Lossless Compression Card In chassis (top cover access), modem card plug-in
IC-0000058 SFP Optical Gigabit Ethernet Data Interface Rear Panel J7 | Optical port
PL-0000795 G.703 ‘BNC’ E3/T3/STS-1 PIIC Module Real Panel PIIC Slots 1 and 2
KT-0000255 SFP STM-1 Copper ‘BNC’ PIIC Module Real Panel PIIC Slots 1 and 2
KT-0000256 SFP OC-3 Single Mode PIIC Module Real Panel PIIC Slots 1 and 2
KT-0000257 SFP OC-3 Multi Mode PIIC Module Real Panel PIIC Slots 1 and 2
KT-0000168 Rear-Mounting Support Bracket (4”) At rear sides of chassis, and rack rear mounting rails
KT-0000195 Rear-Mounting Support Bracket (10”) At rear sides of chassis, and rack rear mounting rails
FP/SL0006 Bearingless Side Railings On sides of chassis