User's Manual Part 2

Digital ATSC Exciter-Modulator System Chapter 4, Axciter Modulator Detailed
Alignment Transmitter Set Up Procedures
Axcera Axciter, Rev. 0 50
Reflected Power Calibration
Switch the transmitter to Standby. Remove the connector that is on Jack J2, on the
Dual Peak Detector Board (1159965), and replace with the connector now on J1, also
inserting a 10 dB pad in series. Switch the transmitter to operate. Monitor the LCD
display in the Set Up menus, reflected power screen, located on the Control/Power
Supply Sled mounted in the Driver/Amplifier. Adjust R10, Reflected Calibration
Adjustment, on the Dual Peak Detector Board (1159965) for a reading of 10% on the
display. Switch the transmitter to Standby. Move the connector back to J1 while
removing the 10 dB pad. Replace the original connector onto J2. Switch the transmitter
to Operate.
This completes the set up and adjustment of the transmitter using the Axciter Modulator
in a Sled-Based System.
If a problem occurred during set up, contact Axcera field service at 1-[phone].