User Manual

ALIGNMENT PROCEDURE

6-4

Part No. 001-3422-003

Figure 6-1 TRANSMITTER TEST SETUP

6.6 TRANSMITTER/FREQUENCY WITH LOADER

NOTE: If the radio is not intended to use Diagnostics go to Section 6.5.

NOTE: Subtract the current drawn by the Test Loader or any Interface Units from all measurements.

1. Set the Diagnostic Enable DAC (DAC4) to 255, (FFh).

2. Select a Transmit channel frequency in the MIDDLE of the band. Make sure voltage at J201, pin 2 is 13.3V DC.

3. Adjust R535 fully clockwise for maximum power output.

4. Adjust the Power Adjust DAC setting (DAC1) to set the power output to 5W ±0.3W. Make sure voltage at J201,

pin 2 is 13.3V DC.

5. Adjust voltage and power if necessary.

6. Repeat Step 5 for channels on the LOW and HIGH ends of the band.

7. Power output should be 4.7-5.3W (50% duty cycle) and current should be less than 2.5A.

8. Select a Transmit channel frequency in the MIDDLE of the band

POWER SUPPLY

+7.5V DC

POWER SUPPLY

+5V DC

VOLTMETER

WATTMETER5W, 50 OHM

DUMMY LOAD

COMMUNICATIONS

SERVICE MONITOR

0-1.5A

DC AMMETER

ANALYZER

MODULATION