Harris Ranger Series, Commissioning Manual

Page: 50 / 162

2-24 888-2685-001 12/24/07
WARNING: Disconnect primary power prior to servicing.
Section 2 Installation Verification &
Ranger Commissioning Manual
Check the power on the HOME screen (shown in Figure 2-4) to check for excessive
reflected power after the mask filter.
All PAs should show a green (OK) status on the GUI (Power Amp screen).
Monitor the PA Meters screen shown in Figure 2-13. This screen can be accessed by
pressing the PA Meters button on the Power Amp screen in Figure 2-12.
Figure 2-13 PA Meters Screen
Press POWER SUPPLY and verify that all PA power supplies show OK status
(green).
Press OUPUT then OUTPUT METERS. This page shows the forward and reflected
powers for the Cabinet and Total System power (after filters). The VSWR is indicated
as well. Calibration should not be required since all couplers are inside the cabinet and
calibrated as part of the factory testing. If the calibration is not correct as determined by
a digital power meter, refer to "3.7.3 Forward and Reflected Power Calibrations" on
page 3-20.
Slowly bring up the transmitter power to the nominal value, as indicated by the
bar graph. Monitor the cabinet forward and reflected powers, as well as the VSWR
reading. A large VSWR (above 1.1) is indicative of a bad RF connection to the test
load.
Check the PA Module “Gain Balance” on the PA Setup screen (press Power Amp,
PA Service, PA Setup to get to Figure 2-14). This is adjusted at the factory and does not
require re-adjustment as long as the current readings in Figure 2-14 are within 1 amp of
each other. If the readings are more than 1 amp apart then perform the following:
NOTE:
Data for nominal
readings.
See Factory Test
(This button not
used on CZ500F)
Use this button
to check PA
Module #2 on
the CZ1000F