Perform The Confidence Check - Agilent Technologies 8719ES User Manual

Perform the Confidence Check

The confidence check is a means of visually checking the quality of the calibration. The
confidence check displays the currently measured data (DATA trace) and the
factory-premeasured data (MEM trace) for the module's confidence state. The confidence
state, an independent reference standard, was not used for the calibration. For a good
calibration measurement, there should be no significant difference between the traces (see
Figure 6-24).
To Perform the Confidence Check
A confidence check is only valid after an ECal has been performed.
NOTE
1. Press
ECal MENU
Cal
2. Press
MODULE A b
3. Select
CONFIDENCE CHECK
Confidence Menu.
4. Press
PARAMETER [ ]
Pressing the
PARAMETER [ ]
for the ET models, TRANS (transmission) and REFL (reflection)) calibration traces.
The confidence check will only display the S-parameter calibration data for which you
calibrated. Uncalibrated S-parameter data traces are invalid. The memory trace still
displays the module's factory-premeasured trace.
For example,
If you performed:
A 1-port calibration
• S11 1-PORT (ES models)
• S22 1-PORT (ES models)
• REFLECTION 1-PORT
An enhanced response calibration
• S11/S21 ENH. RESP.
• S22/S12 ENH. RESP.
• TRANS/REFL ENH. RESP.
A full 2-port calibration
• FULL 2-PORT
CONFIGURE [ ]
until the correct module (A or B) is selected.
to display the confidence check and the ECal
until the S-parameter that you want to view is displayed.
softkey toggles between the S11, S21, S12, and S22 (or
(ET models)
(ES models)
(ES models)
(ET models)
(ES models)
Calibrating for Increased Measurement Accuracy
Calibrating Using Electronic Calibration (ECal)
.
You can view:
Only one calibrated S-parameter
Only two calibrated S-parameters, one
at a time
All four calibrated S-parameters, one
at a time
6- 65