Anritsu 37 D Series, Руководство по обслуживанию, Страница: 85 / 190

Verification Result
Determination
The software verification process compares the measured S-parameter
data of the standards against the original standard data for those de-
vices that was obtained using the Factory Standard 37XXX Vector Net-
work Analyzer System (at Anritsu). The factory Standard 37XXX
system is traceable to NIST through the Anritsu Calibration Labora-
tory’s Impedance Standards. These standards are traceable to NIST
through precision mechanical measurements, NIST approved micro-
wave theory impedance derivation methods, and electrical impedance
comparison measurements.
The quality of the verification results is very dependent on the degree
of care taken by the user in maintaining, calibrating, and using the
system. The most critical factors are:
q The stability and quality of the devices in the calibration and verifi-
cation kits.
q The condition of the VNA test port connectors and through cables.
q The pin depths of all connectors and the proper torquing of connec-
tions. These same factors also affect the VNA’s measurement qual-
ity.
Consult the Operating Manuals supplied with the Anritsu Calibration
and Verification Kits for proper use, care, and maintenance of the de-
vices contained in these kits.
PERFORMANCE VERIFICATION MEASUREMENT ACCURACY
37XXXD MM 5-5