Configuring The Cdm-625; Selecting The Internal If Loop; Connecting The External Cables; Chapter 3. Rear Panel Connectors And Pinouts - Comtech EF Data CDM-625 Installation And Operation Manual

CDM-625 Advanced Satellite Modem
Installation
Follow these steps to install the optional KT/6228 (4") or KT/6228 (10") Rear-Mounting Support
Brackets Kit:
Step Task
Use the #10 flat washers, #10 split washers, and #10 hex nut to secure the #10 shoulder screws to the unit
1
chassis through the rear right and left side mounting slots as shown.
Use the #10 rack bracket bolts to install the rear support brackets onto the rack enclosure threaded rear
2
mounting rails.
Mount the unit into the rack enclosure. Ensure that the shoulders of the #10 shoulder screws properly engage
3
into the rear support bracket slots.
2.3

Configuring the CDM-625

Chapter 5. FRONT PANEL OPERATION

The unit is shipped with a default 64 kbps, QPSK, Rate 1/2 configuration. There are no internal
jumpers to configure, no interface cards to install, and no other options to install. All
configurations are carried out entirely via the modem's installed firmware – use the front panel
keypad and display to configure the modem locally.
The auto-sensing AC power supply does not require any adjustments. Simply plug
in the supplied line cord, and turn on the rear panel switch.
2.4

Selecting the Internal IF Loop

Chapter 5. FRONT PANEL OPERATION – Sect. 5.2.2 SELECT: Test Menus
You may quickly verify proper operation of the modem without the need for externally
connected equipment. From the top level menu, select TEST: Mode →
should synchronize, and the Rx TRAFFIC LED should illuminate GREEN. If the unit does not pass
this test, call Comtech EF Data's Customer Support department for assistance.
2.5

Connecting the External Cables

Chapter 3. REAR PANEL CONNECTORS
Having verified correct operation via the Internal IF loop test, enter the desired configuration
and then connect all external cables. If difficulties occur, call Comtech EF Data's Customer
Support department for assistance.
PINOUTS
AND
2–5
Revision 13
MN-CDM625
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