Rear Panel - Comtech EF Data CDM-600L Installation And Operation Manual

CDM-600L Satellite Modem
Physical Description
The VFD is an active display showing 2 lines, each of 40 characters. It produces a blue
light, the brightness of which can be controlled by the user. It has greatly superior
viewing characteristics compared to a Liquid Crystal Display (LCD), and does not suffer
problems of viewing angle or contrast.
The keypad has six individual keyswitches, mounted directly behind a fully sealed
membrane overlay. They have a positive 'click' action, which provides the user with
tactile feedback. These six switches are identified as [↑], [↓], [→], [←] arrows, ENTER
and CLEAR. The functions of these keys are described in the 'FRONT PANEL
OPERATION' section.
There are eight LEDs on the front panel. The behavior of these LEDs is described in the
'FRONT PANEL OPERATION' section.
4.3

Rear Panel

External cables are attached to connectors on the rear panel of the CDM-600L. These
comprise:
•
IEC line input connector
•
Rx and Tx IF connectors
•
Data interface connector
•
Overhead data connector
•
Audio connector
•
External reference connector
•
External clock connector
•
IDR alarm connector
•
Form C alarm connector
•
Balanced G.703 connector
•
Unbalanced G.703 Tx/Rx connectors
•
IDI, DDO conectors
•
Remote Control connector
•
Auxiliary Serial connector
Figure 4-2. CDM-600L Rear Panel
4–2
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MN/CDM600L.IOM