Configure The Modem; Verify Modem Operation; Connect The External Cables - Comtech EF Data CDM-625A Installation And Operation Manual

CDM-625A Advanced Satellite Modem
Installation
To install the optional KT/6228 (4") or KT/6228 (10") Rear-Mounting Support Brackets Kit, do
these steps:
Step Task
Use the #10 flat washers, #10 split washers, and #10 hex nut to secure the #10 shoulder screws to the
1
modem 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 modem into the rack enclosure. Ensure that the shoulders of the #10 shoulder screws properly
3
engage into the rear support bracket slots.
2.3

Configure the Modem

Chapter 6. FRONT PANEL OPERATION
The modem 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. Configuration is
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

Verify Modem Operation

Chapter 6. FRONT PANEL OPERATION – Sect. 6.2.2 SELECT: Test Menu Branch
You may use the modem's test functions to quickly verify proper operation of the modem,
without the need for externally connected equipment. Use the front panel keypad and, from the
top level menu, select TEST: Mode →
TRAFFIC LED should illuminate GREEN. If the modem does not pass this test, contact Comtech EF
Data Product Support for further assistance.
2.5

Connect the External Cables

Chapter 3. REAR PANEL CONNECTORS
Once you verify correct operation via the Internal IF Loop test, use the front panel keypad to
finalize your configuration as needed. Connect all external cables. If difficulties occur, contact
Comtech EF Data Product Support for further assistance.
IF LOOP).The demod should synchronize, and the Rx
IF↓ (
PINOUTS
AND
2–5
MN-CDM625A
Revision 4