Comtech EF Data CDM-760 User Manual
Page 8
Table of Contents
Revision 2
CDM-760 Advanced High-Speed Trunking Modem
MN-CDM760 / CD-CDM760
iv
1.2.3.1
Front Panel Features ....................................................................................................................... 1–5
1.2.3.2
Rear Panel Features ......................................................................................................................... 1–6
1.2.3.2.1
Rear Panel Standard Features .................................................................................................... 1–6
1.2.3.2.2
Rear Panel Optional Features .................................................................................................... 1–7
1.2.4
Verification ............................................................................................................................................... 1–8
1.2.5
On-site Firmware Updates ....................................................................................................................... 1–8
1.2.6
On-site Operational Upgrades ................................................................................................................. 1–8
1.2.7
Monitor and Control Interfaces ............................................................................................................... 1–9
1.3
CDM-760 Specifications ....................................................................................................................... 1–10
1.3.1
System Specifications ............................................................................................................................. 1–10
1.3.2
Environmental and Physical ................................................................................................................... 1–10
1.3.3
Base Unit Connectors ............................................................................................................................. 1–11
1.3.4
Test Functions ........................................................................................................................................ 1–11
1.3.5
Modulator (Dual IF) ................................................................................................................................ 1–11
1.3.6
Demodulator (Dual IF) ............................................................................................................................ 1–12
1.3.6.1
Es/No Performance ....................................................................................................................... 1–13
1.3.7
Adaptive Coding and Modulation (ACM) ............................................................................................... 1–15
1.3.8
DoubleTalk
®
Carrier-in-Carrier
®
(CnC) ..................................................................................................... 1–15
1.3.9
Regulatory Compliance .......................................................................................................................... 1–16
CHAPTER 2.
INSTALLATION ........................................................................................... 2–1
2.1
Unpack and Inspect the Equipment ....................................................................................................... 2–1
2.2
Install the Unit into a Rack Enclosure .................................................................................................... 2–2
2.2.1
Install the Optional Rear Support Brackets Kit ......................................................................................... 2–4
2.2.2
Install the Optional Bearingless Rack Slide Set ........................................................................................ 2–6
CHAPTER 3.
REAR PANEL CONNECTIONS ....................................................................... 3–1
3.1
Cabling Connection Types ..................................................................................................................... 3–1
3.1.1
Coaxial Cable Connections ....................................................................................................................... 3–1
3.1.1.1
Type ‘BNC’ ....................................................................................................................................... 3–2
3.1.1.2
Type ‘TNC’ ....................................................................................................................................... 3–2
3.1.1.3
Type ‘N’............................................................................................................................................ 3–2
3.1.1.4
Type ‘F’ ............................................................................................................................................ 3–2
3.1.1.5
Type ‘SMA’ (Subminiature Version ‘A’) ........................................................................................... 3–2
3.1.2
D-Subminiature Cable Connections ......................................................................................................... 3–3
3.1.3
RJ-45, RJ-48 Cable Connections ............................................................................................................... 3–3
3.2
CDM-760 Cabling Connections .............................................................................................................. 3–4
3.2.1
IF Connector Group .................................................................................................................................. 3–5
3.2.1.1
Rx Connectors .................................................................................................................................. 3–5
3.2.1.2
Tx Connectors .................................................................................................................................. 3–5
3.2.1.3
J10 | TX MON Connector, Type ‘SMA’ ............................................................................................. 3–5
3.2.2
Utility Connector Group ........................................................................................................................... 3–6
3.2.2.1
J1 | ALARM Connector, DB-15M ..................................................................................................... 3–6
3.2.2.2
J2 | REDUNDANCY Connector, DB-9F .............................................................................................. 3–7
3.2.2.3
J3 | REMOTE Connector, DB-9M ..................................................................................................... 3–7
3.2.2.4
J4 | MGMT Connector, RJ-45F......................................................................................................... 3–8