10
6888882V04
Table 3. 1 kW PA Fault and Warning Messages (Cont.)
Type Message
Meaning
Corrective
Actions
Warning
(Cont.)
INVALID FREQ
1 kW amplifier could not determine the
operating frequency.
The frequency is measured by
automatically causing the
RM125/RM125R to transmit a low level
(about 5W) pilot tone for a few seconds
after each frequency change, and also
whenever the
ENT
key of the
RM125/RM125R is pressed
Check the cable connections
between the RM125/RM125R and
the 1 kW amplifier.
Repeat the frequency measurement
process by pressing the
ENT
key of
the RM125/RM125R and monitor the
RM125/RM125R display: it should
switch to the transmit mode for a few
seconds, and its transmit display
should include at least two bars
1
kW PA Rear Panel
Figure 2 identifies the items located on the rear panel of the 1 kW amplifier, and Table 4 explains
their functions.
6
7
5
4
2
3
1
EXCITER CONTROL
MONITOR
RF Out
RF In
+48VDC
Figure 2. 1 kW PA Rear Panel
Table 4. 1 kW PA Rear Panel Items
Item Description
Function
1
RF IN Connector
N-type connector for RF connection to the RM125/RM125R:
•
In the receive or bypass mode, serves as output for receive signals
•
In the transmit mode, serves as input for RF drive signals
2
+48VDC connector 7-pin circular connector for connection to DC power source
3
Grounding screw
Connection of ground to the 1 kW amplifier
