HP 85108, System Manual

Page: 72 / 136

In all of these situations the b est c hoice will b e to use a separate error mo del for eac h
parameter. F or example, use the Resp onse or the Resp onse & Isolation calibration for the
S
21
and S
12
parameters, and 1-P ort calibrations for the S
11
and S
22
parameters. Combining
error mo dels like this allo ws setup, calibration, and measuremen t for eac h parameter
to b e accomplished indep enden tly . After separate calibration for eac h parameter, the
forward/rev erse switch in the test set will resp ond to fron t panel parameter selections, and
the cal set for the selected parameter will b e recalled.
Combining error mo dels is describ ed in the HP 8510 Op erating and Programming man ual,
Basic Net w ork Measuremen ts p ortion, with the Cal men u in the S-P arameter T est Set
Calibration Error Mo dels section.
General Calibration and Measurement Sequence
Sp ecify device input/output requiremen ts.
Congure test set for these lev els, plus guardband.
Connect op erating device and v erify lev els.
Adjust lev els for b est dynamic range.
P erform measuremen t calibration.
Measure op erating device S-parameters.
General Calibration and Measurement Sequence Using Display Math
Sp ecify device input/output requiremen ts.
Congure test set for these lev els, plus guardband.
Connect op erating device and v erify lev els.
Congure setup for b est dynamic range.
Connect standards and v erify lev els.
Change setup for b est dynamic range during calibration.
P erform measuremen t calibration. j(Before sa ving cal set, congure setup for op erating
device.)
Connect appropriate standards and store reference traces.
Connect op erating device.
Use normalization to view device parameters.
3-36 Operation