Anritsu 373XXA User Manual
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.
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.
Troubleshooting.
6-8
A21A2 ADJUSTMENT
(37397A)
(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:
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.
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:
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.
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.
minutes prior to performing calibration.
A21A2 ADJUSTMENT (37397A)
ADJUSTMENTS
6-14
373XXA MM