Agilent Technologies 8510C, Operating And Programming Manual

Page: 234 / 391

Measurement Calibration
1-P ort Calibration
This calibration error mo del pro vides the b est accuracy for measuremen t of a one-p ort device,
pro viding full v ector error correction for directivit y , source match, and reection signal path
frequency resp onse. The pro cedure uses three standards, usually a shielded op en circuit, a
short circuit, and a load.
During the S
11
1-P ort calibration, all standards are connected at P ort 1 (the p oint at whic h
the test device input p ort will b e connected).
During the S
22
1-P ort calibration, all standards are connected at P ort 2.
Figure 8-9. S-P arameter T est Set 1-P ort Calibrations
One-P ort Device: S
11
1-P ort Correction
1.
Press 4
S11
5 4
CAL
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
CAL 1, CALIBRATE: S
11
1-PORT .
2. A t P ort 1, connect a shielded op en circuit.
3.
When the trace is correct, press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
(S
11
): OPEN . Op en circuit data is measured.
4. A t P ort 1, connect a short circuit.
5.
When the trace is correct, press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
(S
11
): SHORT . Short circuit data is measured.
6.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
(S
11
): LOADS to presen t the Loads men u. If the frequency sw eep crosses 2 GHz,
then b oth the
NNNNNNNNNNNNNNNNNNNNNNN
LOWBAND and
NNNNNNNNNNNNNNNNNNNNNNN
SLIDING loads, or the
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
BROADBAND load m ust b e used.
Calibrating for System Measurements 8-19