
8712ET/ES and 8714ET/ES Performance Checks
RF Network Analyzers Performing the Operator's Check
Service Guide 1-9
This concludes the operator's check. However, further confidence can be obtained by
performing the following:
•Measure a known filter to verify that its measured response is the same as is expected.
(A 175 MHz filter is supplied with the analyzer.) Verify both the frequency accuracy and
noise floor.
•Check broadband response with the filter using conversion-loss mode (same as B*/R*).
•If the analyzer's frequency accuracy is critical for your application, verify a CW
frequency using a frequency counter. Verify to±.005% accuracy (for example,± 2500 Hz
at 500 MHz). Ensure that the analyzer is placed in trigger-hold mode (press
) to measure frequencies.
If the Analyzer Fails the Operator’s Check
First, repeat the operator's check using a different cable and load to eliminate these as a
possible cause of failure. Second, if the floppy disk from the factory labeled “Correction
Constants” is available, reload the “Correction Constants” (CCs) perChapter 8,
“Correction Constants and Firmware.” (The floppy disk was shipped with the instrument
from the factory.) Then repeat the Operator’s Check.
If your analyzer does not meet the criteria in the operator's check, your analyzer may need
adjustment or servicing. Contact any Agilent Technologies sales or service office for
assistance. Refer toTable 9-1on page9-7 for the nearest office. Before shipping your
analyzer, fill out and attach the blue repair tag, located at the back of this manual.
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