Anritsu 373XXA - Manual (Page 84)

If calibration passes:
Save the calibration data to (hard) disk, as follows:
Step 1. Press the Option Menu key (Enhancement key group) to dis-
play the OPTIONS menu.
Step 2. Select DIAGNOSTICS from menu.Then select in se-
quence: H/W CALIBRATIONS |DISK OPERATIONS
|SAVE TO HARD DISK|HW_CAL.LO1.
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:
Step 1. Repeat the calibration. If it still fails, then proceed to
Chapter 5, Troubleshooting.
6-3
LO 2 CALIBRATION This procedure uses the 373XXA internal diagnostics and calibration
menus to adjust the A2 2nd LO PCB assembly. Perform this calibation
procedure if:
q The A2 PCB is replaced.
q BBRAM chip on A9 Processor PCB is replaced and the LO2 Cali-
bration data was not previously saved on disk (that is, data is not
available for recall from a floppy disk).
Calibration
Procedure
Perform the following steps:
Equipment Required
None
NOTE
Allow the 373XXA to warm-up at least 30 minutes prior to
performing calibration.
Procedure
Step 1. Press the Option Menu key (Enhancement key group) to dis-
play the OPTIONS menu.
LO 2 CALIBRATION ADJUSTMENTS
6-4 373XXA MM