Modem Ground, Power, And Fuse Connections; Chassis Ground Interface; Figure 3-5. Modem Chassis Ground Interface (Cdm-570Al-Ip Shown) - Comtech EF Data CDM-570A Installation And Operation Manual

CDM-570A/570AL Satellite Modem with Optional Packet Processor
Rear Panel Connectors and Pinouts
3.3

Modem Ground, Power, and Fuse Connections

3.3.1

Chassis Ground Interface

CAUTION – CORRECT GROUNDING PROTECTION IS REQUIRED TO PREVENT PERSONAL
INJURY AND EQUIPMENT DAMAGE.
THIS MODEM IS DESIGNED FOR CONNECTION TO A POWER SYSTEM THAT HAS
SEPARATE GROUND, LINE, AND NEUTRAL CONDUCTORS. THE EQUIPMENT IS NOT
DESIGNED FOR CONNECTION TO A POWER SYSTEM THAT HAS NO DIRECT CONNECTION
TO GROUND. IT IS THEREFORE IMPERATIVE DURING INSTALLATION, CONFIGURATION,
AND OPERATION THAT YOU PROPERLY GROUND THE MODEM USING THE GROUND
STUD PROVIDED ON THE MODEM REAR PANEL AND THAT THE MODEM IS ALWAYS
CONNECTED TO THE PROTECTIVE EARTH.
(BOTTOM) CDMR-570AL Reduced Chassis Depth Modem -24V or -48V DC Chassis

Figure 3-5. Modem Chassis Ground Interface (CDM-570AL-IP Shown)

Use the #10-32 stud, located adjacent to the power interface module or terminal block, for
connecting a common chassis ground among equipment.
The AC power interface provides the safety ground.
(TOP) Standard AC Chassis
(MIDDLE) Optional -24V or -48V DC Chassis
3–14
MN-CDM570A
Revision 3