Comtech EF Data PCB-4300 - Manual (Page 29)

PCB-4300 1:2 Phase Combiner Revision 2
External Connectors MN/PCB4300.IOMMN/PCB4300.IOM
2–7
2.3.3 SSPA OUT 2 J10, SSPA OUT 3 J11 Connectors
The SSPA OUT 2 J10 and SSPA OUT 3 J11 connectors, located on
the right side panel of the PCCB, are Type ‘N’ female connectors.
They provide the RF signal outputs from the PCCB to SSPA #2 and
SSPA #3.
2.4 Power and Ground Interfaces
2.4.1 AC Power
The PCB-4300 derives its power from the SSPAs. Each SSPA provides a +24V signal line via
cables interconnecting the SSPAs to the SSPA COM 1 J2, SSPA COM 2 J3, and SSPA COM 3
J4 connectors (Pin ‘R’ – see Table 2-3 in Sect. 2.2.2). These three signals are “diode OR’ed” to
provide redundancy.
Note: Although the PCB-4300 box will turn on and function when only one SSPA is powered,
the system will not provide optimum output power unless at least two of the three SSPAs are
powered on.
2.4.2 Ground Connector
A #10-32 stud is provided on the front panel of the PCCB for connecting a
common chassis ground among equipment.