Technical data

3-22 Service Guide N5230-90025

Tests and Adjustments PNA Series Microwave Network Analyzers

System Verification N5230C

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

To verify all four ports, it is necessary to perform the verification process outlined above twice—once for

ports 1 and 2 and once for ports 3 and 4.

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

, S

, and S

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 Typ e- 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.