Agilent Technologies 11644A Series, User'S And Service Manual

Page: 40 / 83

5-6 X, P, and K 11644A
Performance Verification
System Operation Checks
System Operation Checks
Use the following procedures and the standard section in this kit to verify the operation of
your calibrated system.
NOTE If you are using a different analyzer, refer to its documentation for specific
measurement instructions.
8510 System Operation Check
1. Short the standard section and perform an S
11
and an S
22
measurement to verify that
the ripple on the reflection of the shorted waveguide section does not exceed the limits
listed in the tables on
page 5-11 . If the ripple is less than the acceptable value, then the
combination of directivity and source match errors of the calibrated system is within
the factory specified values.
2. Check the S
11
and S
22
of a thru measurement. As in the previous step, the results of
this check contain the directivity error, but, because of the thru connection to port 2,
this measurement also contains errors contributed by other terms, including load
match, the S
11
and S
22
of the standard sections, and transmission tracking. The actual
or absolute return loss of the standard section should not exceed the acceptable values
listed on
page 5-11 .
3. Make an S
21
and an S
12
measurement. Ideally, the standard section is low loss. These
measurements verify that the combination of source match error and load match error
do not cause excess ripple on the trace. The trace ripple should not exceed the
acceptable values listed in the tables on
page 5-11 .
4. Record the results of each test in Tables 5-1 through 5-3 .
The S
11
and S
22
of a Shorted Standard Section
1. Set the averaging factor to 512.
2. Perform a TRL calibration.
3. Turn on the calibration.
4. Connect the standard section to port 1.
5. Connect the short to terminate the standard section.
6. Connect the load to port 2.