The HP Model 8503A Type-N calibration kit used with
"S" parameter The test sets such as HP Model 8503A, when using an
automatic network analyser such as HO modules 8507B end 8409 A/B, the kit can
be used with accuracy enhancement programs (AIM) to remove the effects of RF
errors due to directly, port match and frequency tracking. Option 001 should be
used in applications with HP model 8409 network analyser systems.