Harris Constellation, Installation & Maintenance

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Harris Corporation Constellation™
Transmitter Frequency Measurement 8-5
ROUTINE
MAINTENAN
C
E
Transmitter Power Measurement
This procedure for measuring the transmitter power should be followed
•
For new installations
•
As part of the annual maintenance requirement
•
When the Transmitter Assembly is replaced
Note that this is a new procedure and should be followed
from now on.
You may observe a low output alarm while you are
performing calibration. Ignore the alarm until the
calibration has been completed.
Measuring the Power Output of an Off-line Transmitter
If the Transmitter to be measured is off-line, then it must be placed on line.
The following procedure interrupts traffic.
1. Lock the Transmitter on line as follows:
From the Keypad main menu, select
CONTROL > LOCK/IF LPBK > LOCK MOD/TX > SET
Connecting the Power Meter
2. Connect the power head of the power meter to the transmit monitor port
on the ACU. See
Figure 8-2
.
The monitor port is labeled “COUPLING LOSS FROM ANTENNA FLANGE
CAL AT XMT FREQ __._”.