Comtech EF Data CDM-570A - Manual (Page 76)

CDM-570A/570AL Satellite Modem with Optional Packet Processor MN-CDM570A
Rear Panel Connectors and Pinouts Revision 2
3–14
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.
(TOP) Standard AC Chassis
(MIDDLE) Optional -24V or -48V DC Chassis
(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.