Agilent Technologies N5242A, Service Manual

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3-22 Service Guide N5242-90001
Tests and Adjustments PNA Series Microwave Network Analyzers
System Verification N5242A
Performing System Verification
The following verification procedure is automated by the analyzer firmware. The process
for the verification is:
• connect cables to the analyzer test ports
• perform a calibration or recall a recent calibration
• run the system verification program for the verification devices
Each time through the verification process, you are prompted to make necessary
connections and perform or recall a calibration as part of performing the verification. If you
select to perform a calibration, you are guided through the calibration procedure. This part
of the process can be eliminated if you choose to load an existing recent calibration. If
necessary, refer to the analyzer’s on-line embedded help for information on storing and
recalling calibrations.
For each verification device, the analyzer reads a file from the verification disk and
sequentially measures the magnitude and phase for all four S-parameters.
IMPORTANT For system verification to perform correctly, it is NECESSARY that the
verification devices be measured with their female connectors connected to
the analyzer’s test ports.
NOTE Although the performance for all S-parameters are measured, the S
11
and S
22
phase uncertainties for the attenuators and airlines are less important for
verifying system performance. Therefore, the limit lines will not appear on
the printout.
Equipment Used in the System Verification Procedure
Equipment Type
3.5 mm Type-N
Calibration kit
85052B, C, D
N4691A E-cal 85054B/D
N4690A E-cal
Verification kit 85053B 85055A
Cables
Single cable: 85131C/E
Cable pair: 85131D/F Single cable: 85132C/E (3.5 mm NMD to 7 mm)
Cable pair: 85132D/F (3.5 mm NMD to 7 mm)
Adapters None required.
With single cable: an 85130C adapter and a 7mm to Type-N
adapter from the 85054B calibration kit.
With cable pair: Two 7mm to Type-N adapters from the
85054B calibration kit.