User's Manual

RPT 633
TM1184 Issue 1 Page 5 - 5
TRANSMITTER BOARD ALIGNMENT PROCEDURE
Initial Settings
8. Set the variable components and links as follows:
VC1 - Anywhere.
VC2 - Half Meshed.
VC3 - Fully Un-meshed.
VC4 - Fully Un-meshed.
VC5 - 25% Meshed.
FL1 and FL2 - Adjusters standing proud by 2mm.
RV1 - Fully Anti-clockwise.
RV2 - Mid Position (15 turns from either end).
RV3 - Anywhere
RV4 - Mid Position
LK1 - Position 2-3 Normal Version.
Position 1-2 FTZ Version.
LK2 - Position 1-2 Output frequencies less than 447MHz.
Position 2-3 Output frequencies greater than or equal to 447MHz.
LK3 - Position 2-3 Normal Operation.
Position 1-2 Invert Data Sense.
Initial Connections
9. Set up the test equipment as follows:
a) Connect the absorption wattmeter or power meter to the antenna socket using
a lead no longer than 300mm.
b) Connect the modulation meter and frequency counter to the attenuated output.
c) Connect the power supply to SK3.
d) Connect the audio signal generator via a 0.47µF capacitor to SK1.