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Step 3. Follow the directions displayed on the screen to set-up and
connect the frequency counter to the 373XXA. Refer also to
Figure 6-1 Select START SOURCE FREQ CALIBRA
-
TION from menu (above).
Step 4. Follow the directions displayed on the 373XXA CRT screen,
until calibration is completed.
Post Calibration
Actions
After the calibration process is completed, perform the following ac-
tions, as appropriate:
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.FRE.
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 (FRE), date, and system model
and serial numbers. Set the copy protect tab
on the disk. Properly safeguard the disk so
that it will be available for later use, as
needed.
Perform the Source FM/Lock Linearity test in Chapter 3, Operational
Tests. If the test fails, proceed to Chapter 5, Troubleshooting.
ADJUSTMENTS FREQUENCY CALIBRATION
373XXA MM 6-7
Band 1
Band 2
Band 3
789
456
12
3
0
.
-
373XXA VNA
EIP 578B Frequency Counter
Dedicated GPIB
Microwave Cable
Figure 6-1. Test Setup for Frequency Calibration
EIP