SECTION 4
ALIGNMENT PROCEDURE
4.1
TEST EQUIPMENT
i)
Rhode and Schwartz model SMFP or CMT. Alternative:
Marconi transceiver test set model 2995.
ii)
Power supply 13.8 volt at 10 amp
Kenwood PD35-20 or PS775.
iii)
CRO Philips PM3055 (greater than 20MHz BW).
iv)
DVM Fluke 77 or similar
4.2
GENERAL INSTRUCTIONS
i)
The alignment of the PRM80 is performed using the EEPROM customization memory
programmed with the standard test and alignment information.
ii)
A non-metallic tuning tool should be used for all tuning coil adjustments, and an insulated
tool for all other adjustments where short circuits could occur.
iii)
The negative lead of all test equipment should be connected to the PRM80 chassis
unless stated otherwise.
iv)
This alignment procedure assumes that the equipment is operating normally and is
without faults
.
4.3
PRELIMINARY ADJUSTMENTS
i)
Ensure test frequencies and options are programmed into the EEPROM. This program is
for functional test and alignment purpose only.
ii)
Remove the radio screen if fitted.
iii)
Adjust the rotary volume and mute controls fully counter-clockwise.
iv)
Preset VHF front end tuning cores. Fiush with end of former. (see figure 4.2).
v)
Set the supply voltage to 13.8Vdc. (measured at do supply socket connection).
Section 4 Page 1
