Technical data

Installation and Service Guide N5250-90001 6-5
PNA Series Microwave Network Analyzer System Performance Tests and Checks
N5250A System Performance Verification
System Performance Verification
NOTE Since the N5250C has typical (non-warranted) specifications only, the SYSTEM
PERFORMANCE VERIFICATION is not a PASS/FAIL test. The SYSTEM PERFORMANCE
VERIFICATION is a test to establish BASELINE PERFORMANCE after the installation.
The system verification procedure is automated by the analyzer firmware. 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.
System verification is performed at the N5250C system 1.0 mm port connectors over a frequency range of 45
MHz to 110 GHz with an Agilent 85059A 1.0 mm calibration and verification kit.
For system verification to perform correctly, it is NECESSARY that the verification devices be measured with
their female connectors connected to Port 1 and their male connectors connected to Port 2.
The following procedure, and the connection prompts given, use the 11500-60001 (11500I) 1.0 mm
female-to-female cable connected to Port 2. This cable is included in the 85059A 1.0 mm calibration and
verification kit.
When to Verify
After installation of the system is complete, a performance verification is necessary to assure proper system
operation. This initial verification is included with the installation.
After the initial verification, the verification should be repeated once a year. This recommended interval
assumes that Agilent cables are used with the system.
If non-Agilent cables, adaptors, or other fixtures are used, the verification schedule must be determined by
the user, as the characteristics of these devices are unknown. In establishing a verification schedule, the
following factors should be considered:
• Frequency of use
• Amount of cable movement
• Amount of drift occurring between prior verifications
NOTE Performance verification of a system performed at long intervals is not to be confused with
measurement calibration. Measurement calibration typically is performed on a daily basis, or
when the measurement setup or conditions have changed.