Skanti TRP 5000, Instruction Manual

Page: 86 / 112

5 - 15
6. Simple Service
6.1 Incorrect Operation
If the equipment is not functioning correctly, a check should be made
that it is being operated properly. Go through adjustment procedures 2.2
and 2.3 if necessary.
6.2 Battery
The condition of the battery should be checked at frequent intervals.
The battery must always be fully charged and should be topped up
frequently with distilled water (liquid should rise 5 to 10 mm above the
plates).
6.3 Checking the Antenna Tuning
The antenna tuning may be checked by adjusting the transmitter as
described in section 2.3, preferably on one of the frequencies that was
listed in the TUNING CHART when the equipment was installed.
Then set POWER switch to SIMPLEX, MEDIUM and CHECK SWITCH to LEVEL. Pull
the CHECK SWITCH knob out and press TUNE button. Note the meter reading.
Set POWER switch to SIMPLEX, FUIL and press TUNE button. Note ANTENNA
CURRENT reading.
Compare the readings with the readings listed in the TUNING CHART. ]f
the two readings differ appreciably from the listed values, and the
transmitter is otherwise functioning normally, the fault can be expected
to be in the antenna system or in the transmitter earth connection.
Accordingly, the following cheeks should be made:
Have any changes been made in antenna or earth connections since the
installation was made?
Have any changes been made in the rigging of the vessel, or in the
placement of derricks etc.?
Is leakage
present on the antenna, possibly caused by moisture or dirt
on the antenna insulators?
6.4 Using the CHECK SWITCH
The CHECK SWITCH is not normally operative. Pulling the switch knob out
will switch the ANTENNA CURRENT meter to read the voltage or current
selected with the switch. When released, the knob will return to its
original position.
The meter reading in all positions except LEVEL is approx. 3 under
normal conditions, i.e. transmitter adjusted as described in section
2.3, POWER switch set to FULL and TUNE button pressed.