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User's Manual | ACOM 04AT | Remote Automatic Antenna Tuner and Switch
The ANTENNA or ANTENNA buttons can be used to review the resource table for another antenna in the
same band.
The
SEGMENT or SEGMENT
table. Simultaneously pressing the two
for review (the preceding band cannot be selected).
Simultaneously pressing and holding for more than 2 seconds the two
shaded segment tuning, and "- - - -" is displayed in place of the hours.
6.4. Measurements in the Tuner - ATU MEASURE Menu
This menu allows remote measurements of some RF values directly at the antenna outputs of the tuner
(without the transformation action of the matching circuit). This data can be used to troubleshoot and
diagnose the status of the antennas and feeders (see Section
).
feeder Path Status
Five values are measured for the current operating frequency segment and current antenna output, as well
as three general tuner values:
ANTENNA VOLTAGE: ... V (rms)
ANTENNA CURRENT: ... A (rms)
ANTENNA FORWARD POWER: ... W
ANTENNA REFLECTED POWER: ... W
ANTENNA SWR: ...
ATU PS VOLTAGE: ... VDC
ATU TEMPERATURE: ...
ATU WORKING HOURS: ...
The measurements can be performed in STBY mode or OPER mode. The operator should manually start and
stop RF power to the tuner when performing these measurements.
In ATU MEASURE menu the tuner protection systems are temporarily blocked, so the RF
power limits (see
) should be monitored by the operator (see Sections
SWR
Antenna Output
Power Supply Voltage and Temperature in the Tuner Unit
October 2023
buttons are used to select (highlight) a different frequency segment in the
SEGMENT
o
C
Table 8-1 | Maximum input power of the tuner as function of the antenna
,
6.4.2 Reflected Power, Forward Power and SWR at Antenna Output
buttons for more than 1 second selects the next BAND
7.5 Troubleshooting - Monitoring the Antenna-
NOTICE
6.4.1 Voltage and Current at the
).
S e c t i o n ADVANCED FUNCTIONS AND OPTIONS | Page 63 of 88
ANTENNA
buttons delete the
and
6.4.3
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