Comtech EF Data LBC-4000 - Manual (Page 44)

LBC-4000 L-Band Up/Down Converter System Revision 4
Rear Panel Connections MN/LBC4000.IOM
3–10
3.3.1 Chassis Ground Interface
PROPER GROUNDING PROTECTION IS REQUIRED. The equipment must be connected
to the protective earth connection at all times. It is therefore imperative that the unit
is properly grounded, using the ground stud provided on the unit rear panel, during
installation, configuration, and operation.
The AC power interface provides the safety ground.
Use the #10‐32 stud, located adjacent to the power interface, for connecting a
common chassis ground among equipment.
3.3.2 Chassis Power Interfaces
3.3.2.1 AC Prime Power Connector
A detachable power cord, provided with the LBC‐4000, mates with the AC
(Alternating Current) Prime Power receptacle for connection to 90 to 125
VAC, or 205 to 240 VAC power sources.
3.3.2.2 DC Filter Input Module
The DC (Direct Current) Filter Input Module input voltage is 48VDC
nominal, ‐36 VDC minimum, ‐72VDC maximum. Table 3‐6 lists the pinouts
for this interface.
Table 3-6. DC Input Filter Module Pinouts
Pin # Signal Name Wire Colors Wiring Options
A Negative Black -48 VDC 0 VDC
B Ground Green/Yellow Earth Ground Earth Ground
C Positive Red 0 VDC +48 VDC