Operator Maintenance and Calibration
Calibrate the Wideband AC Module (Option 5730A/03 or 5730A/05) 7
7-17
Calibrate the Wideband AC Module (Option 5730A/03 or
5730A/05)
The Wideband AC Module (Option 5730A/03 or 5730A/05) can be installed in the
5730A Calibrator. The module needs to be calibrated for both gain and flatness. The gain
should be calibrated when the 5730A/03 or 5730A/05 main output functions undergo
their routine calibration.
Since frequency flatness is determined by stable parameters (i.e. circuit geometry and
dielectric constants), the flatness of the Wideband AC Module has excellent long-term
stability. Consequently, a two-year calibration cycle is adequate for flatness calibration,
and can be scheduled to coincide with the Calibrator shipment to a standards laboratory
for periodic verification.
The subsequent procedure describes how to do the wideband gain calibration.
Note
To do this procedure, in addition to the standard equipment supplied with
the wideband option, a Type “N” female to double banana plug adapter
(e.g., Pomona 1740) is necessary.
Before this procedure is started, make sure the Calibrator is powered on and has
completed an appropriate warm-up period. Then proceed with this procedure to calibrate
the wideband gain.
1. Touch Setup Menu>Calibration to show the Calibration menu.
2. Connect the wideband output cable between the WIDEBAND connector and the
SENSE binding post.
The center conductor of the 50 Ω feedthrough should go to SENSE HI as shown in
Figure 7-7. The GND tab on the adapter should be on the LO side.
CALIBRATOR
GND TAB
50 Ω Feedthrough
hhp030.eps
Figure 7-7. Wideband Module Calibration Connection
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