Comtech EF Data CDM-750, Installation And Operation Manual

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CDM-750 Advanced High-Speed Trunking Modem Revision 2
Table of Contents MN-CDM750
iv
1.2 CDM ‐ 750 Functional Description ........................................................................................... 1–1
1.3 CDM ‐ 750 Features ................................................................................................................ 1–5
1.3.1 Physical Description .............................................................................................................................. 1–6
1.3.2 Dimensional Envelope .......................................................................................................................... 1–7
1.3.3 CDM ‐ 750 External Physical Features ................................................................................................... 1–8
1.3.3.1 Front Panel ........................................................................................................................ 1–8
1.3.3.2 Rear Panel ......................................................................................................................... 1–9
1.3.3.2.1 Rear Panel Standard Features..................................................................................... 1–9
1.3.3.2.2 Rear Panel Optional Features ................................................................................... 1–10
1.4 CDM ‐ 750 Specifications ...................................................................................................... 1–11
1.4.1 System Specifications ......................................................................................................................... 1–11
1.4.2 Environmental and Physical ............................................................................................................... 1–11
1.4.3 Base Unit Connectors ......................................................................................................................... 1–12
1.4.4 Test Functions ..................................................................................................................................... 1–12
1.4.5 Modulator (Dual IF) ............................................................................................................................. 1–12
1.4.6 Demodulator (Dual IF) ........................................................................................................................ 1–13
1.4.7 Adaptive Coding and Modulation (ACM) .......................................................................................... 1–14
1.4.8 DoubleTalk
TM
Carrier ‐ in ‐ Carrier
®
(CnC) .............................................................................................. 1–15
1.4.9 Regulatory Compliance ...................................................................................................................... 1–15
1.4.10 Standard Assemblies .......................................................................................................................... 1–15
1.4.11 Optional Assemblies ........................................................................................................................... 1–16
CHAPTER 2. INSTALLATION .............................................................................................. 2–1
2.1 Unpacking and Inspecting the Shipment ............................................................................... 2–1
2.2 Installing into a Rack Enclosure ............................................................................................. 2–2
2.2.1 Installing the Optional Rear ‐ Mounting Support Brackets Kit ............................................................ 2–4
2.2.2 Installing 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’ .............................................................................................................................. 3–3
3.1.1.5 Type ‘SMA’ (Subminiature Version ‘A’) ............................................................................. 3–3
3.1.2 D ‐ Subminiature Cable Connections .................................................................................................... 3–3
3.1.3 Circular Cable Connections .................................................................................................................. 3–4
3.1.4 RJ ‐ 45, RJ ‐ 48 Cable Connections ........................................................................................................... 3–4
3.2 CDM ‐ 750 Cabling Connections .............................................................................................. 3–5
3.2.1 IF Connector Group .............................................................................................................................. 3–7