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NOTE
Also save the calibration data to floppy disk
for archival purposes as a backup in case of
a hard disk failure. Label the disk with cali
-
bration type, date, and system model and se
-
rial numbers. Set the copy protect tab on the
disk. Properly safeguard the disk so that it
will be available for later use, as needed.
If calibration fails:
q
Repeat the calibration. If it still fails, then proceed to Chapter 5,
Troubleshooting.
6-8 A21A2 ADJUSTMENT
(37397A)
This adjustment ensures the correct RF power level will be available
to drive the source quadrupler modules (SQMs). Perform these adjust
-
ments as follows:
q
D454244 is replaced.
q
A21A2 PCB is replaced.
q
C21620 YIG Oscillator is replaced.
NOTE
Failure to perform this adjustment may result in intermit-
tent operation.
Calibration
Procedure
Perform the following steps:
Refer to Table 1-1, located on page 1-9, for further information about
the following equipment:
HP 437B Power Meter with HP 8487A Power Sensor
or:
ANRITSU ML24XXA with Version 2.02 or later, with ANRITSU
Power Sensors MA2474A and SC6230 for 50 and 65 GHz units.
or:
Gigatronics 8541/8542 with 80304A Power Sensor
GPIB cable, WILTRON 2100-2, or equivalent
NOTE
Allow the 373XXA and power meter to warm-up at least 30
minutes prior to performing calibration.
A21A2 ADJUSTMENT (37397A) ADJUSTMENTS
6-14 373XXA MM