Harris Atlas DVL400, Technical Manual

Page: 155 / 180

2/25/03 888-2473-001 5-9
WARNING: Disconnect primary power prior to servicing.
Section 5 Maintenance and Alignments
ATLAS Series™
5.5.3 DCU Calibration
The Drive Control Unit or DCU has a forward power directional coupler for each
exciter to measure exciter power output. This power reading shows up on the Drive
Meters screen in Figure 3-6 on page 3-8. This screen is used to calibrate the display
readings. To access this screen press the following buttons:
Calibration Procedure:
STEP 1
With the transmitter operating at nominal power, measure the output
of the DCU with a digital power meter.
STEP 2
Press the CHANGE button next to the reading to be calibrated.
STEP 3
Use the + and - buttons to change the reading to that measured on the
digital power meter.
STEP 4
Press SAVE to store the changes or CANCEL to discard the changes.
Figure 5-6 DCU Setup Screen
Key Presses