Harris Atlas DVL400, Technical Manual

Page: 127 / 180

2/25/03 888-2473-001 4-27
WARNING: Disconnect primary power prior to servicing.
Section 4 Theory of Operation
ATLAS Series™
4.4.6.1 RF Detectors
There are 2 types of RF detectors used on the RF Monitor Board:
•
Relative - Used to monitor the reject load power levels. These detectors
are very accurate at a calibrated power level, but are not linear across a
wide dynamic range.
•
Precision - Used for metering of critical (metered) forward and reflected
power levels of the cabinet and the system. These are true RMS detectors
that are linear at all power levels, giving the accurate readings required
for metering and VSWR protection.
Parameters monitored by the RF detectors include:
a. Reject load #1 power
b.
Reject load #2 power
c.
Reject load #3 power
d.
Reject load #4 power
e. Reject load #5 power
f. Reject load #6 power
g. Reject load #7 power
h.
Reject load #8 power
i.
Precision RF power measurement #1 Cabinet Forward Power
j.
Precision RF power measurement #2 Cabinet Reflected Power
k.
Precision RF power measurement #3 System Forward Power
l.
Precision RF power measurement #4 System Reflected Power
m.
Precision RF power measurement #5 Drive Chain A Power
n. Precision RF power measurement #6 Drive Chain B Power