Harris CZ1000F, Commissioning Manual

Page: 68 / 162

3-12 888-2685-001 12/24/07
WARNING: Disconnect primary power prior to servicing.
Ranger Commissioning Manual
Section 3 Operation and Adjustments
d.
DAC Counts - These are 10 bit (0-1023) ADC samples of the detected RF input
and Forward and Reflected power output.
•
IN - Is a sample of the detected RF drive input to the module. Nominal input
for 400W output is 15mW. This number is usually in the 800 range for full
rated output. The input overdrive fault is detected from this reading and is
triggered when the DAC reading is approximately 1.9dB above nominal or
•
Out - This is a sample of the detected forward power sample from the
directional coupler on the module output. This is used for metering and as
the sample for the module AGC. This number is forced by the AGC to track
the IN reading, thereby keeping the module gain at 46dB.
•
Reflected - This is the detected sample from the reflected coupler on the
module output. It is used for metering of reflected power or VSWR. Can be
used as a relative reading to detected changes in the module output.
e.
Module Settings - These are status readings from the module to the transmitter
controller. The FREQUENCY and the BAND are set via the Channel number
entered into the System Setup screen shown in Figure 3-22. These are simply
read backs to verify that the module is setup properly. If not set properly, module
calibration could be affected. All Ranger modules should read HD (High power
Diamond) under TYPE.
The Bands are:
•
Band A/B - Channels 14 - 41
•
Band C/D - Channels 42 - 69