6888882V04
11
Table 4. 1 kW PA Rear Panel Items (Cont.)
Item Description
Function
4 MONITOR
connector
9-pin D-type female connector for connection to maintenance monitor (ASCII
terminal or PC with terminal emulation program)
5 EXCITER
CONTROL
Connector
25-pin D-type female connector, contains the control interface that enables the
RM125/RM125R to control the 1 kW amplifier
6
Exhaust Vents
Cooling air exhaust vents
7
RF OUT Connector N-type connector for RF connection to antenna system:
•
In the receive or bypass mode, serves as input for receive signals
•
In the transmit mode, serves as output for amplified RF signals
PS Front Panel
Figure 4 identifies the items located on the front panel of the PS unit, and Table 5 explains their
functions.
OUT 1
OUT 2
OK
NG
OK
NG
AC ON
ON
OFF
1
2
3
5
4
6
Figure 3. PS Front Panel
Table 5. PS Front Panel Items
Item Description
Function
1
ON/OFF switch
Turns the PS on
2
AC ON indicator
Lights when the PS unit is powered
3
OUT 1 OK indicator Lights when the power supply subsystem 1 operates normally
4
OUT 1 NG indicator Lights when the output voltage provided by power supply subsystem 1 is not
within
±
25% of its normal value.
To protect the 1 kW amplifier, the output voltage is automatically turned off in
case it exceeds the maximum value. To attempt returning to normal operation,
turn the PS off and then back on: if problem recurs, the PS unit must be
serviced
