Comtech EF Data CDM-625A - Page 10

CDM-625A Advanced Satellite Modem MN-CDM625A / CD-MN-CDM625A
Table of Contents Revision 4
iv
1.3 Features ............................................................................................................................. 1–4
1.3.1 Physical Description .................................................................................................................................. 1–4
1.3.2 Modem Compatibility .............................................................................................................................. 1–4
1.3.3 Verification ................................................................................................................................................. 1–4
1.3.4 Updating Modem Firmware .................................................................................................................... 1–4
1.3.5 Standard Data Interfaces ......................................................................................................................... 1–5
1.3.6 Optional Hardware and Accessories ....................................................................................................... 1–5
1.3.7 Fully Accessible System Topology (FAST) ............................................................................................... 1–7
1.3.8 Supporting Hardware and Software ....................................................................................................... 1–9
1.3.9 Physical Features ..................................................................................................................................... 1–10
1.3.9.1 Dimensional Envelope ....................................................................................................................... 1–10
1.3.9.2 Front Panel Features .......................................................................................................................... 1–11
1.3.9.3 Rear Panel Features ........................................................................................................................... 1–12
1.4 Summary of Specifications ................................................................................................ 1–13
1.4.1 Modulator ................................................................................................................................................ 1–13
1.4.2 Demodulator ........................................................................................................................................... 1–16
1.4.3 Data Interfaces ........................................................................................................................................ 1–22
1.4.4 Automatic Uplink Power Control (AUPC) ............................................................................................. 1–22
1.4.5 DoubleTalk
®
Carrier- in-Carrier
®
(CnC) ................................................................................................... 1–23
1.4.6 Framing Summary ................................................................................................................................... 1–24
1.4.7 Data Rate Ranges .................................................................................................................................... 1–25
1.4.8 VersaFEC Adaptive Coding and Modulation (ACM) ............................................................................ 1–30
1.4.8.1 VersaFEC ACM .................................................................................................................................... 1–30
1.4.8.2 VersaFEC-2 ACM ................................................................................................................................. 1–31
1.4.9 Miscellaneous .......................................................................................................................................... 1–34
1.4.10 Approvals ................................................................................................................................................. 1–34
CHAPTER 2. INS
TALLATION ............................................................................................. 2–1
2.1 Unpack and Inspect the Shipment ....................................................................................... 2–1
2.2 Install the Modem Into a Rack Enclosure ............................................................................. 2–2
2.2.1 Install the Optional Rear-Mounting Support Brackets Kits .................................................................. 2–4
2.3 Configure the Modem ......................................................................................................... 2–5
2.4 Verify Modem Operation .................................................................................................... 2–5
2.5 Connect the External Cables ................................................................................................ 2–5
CHAPTER 3. REAR PANEL CONNECTORS AND PINOUTS ............................................ 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