HP HP 54600B, User'S And Service Manual

Page: 120 / 183

To perform the self-calibration
In this procedure you load the default calibration factors to give a known
starting point for the firmware calibration.
However, once the default
calibration factors are loaded, you must perform the remainder of the
firmware calibration to maintain the accuracy of the oscilloscope.
Table 4-14 Equipment Required
Equipment Critical specifications Recommended
Model/Part
Pulse generator 100 kHz, 1 V p-p, rise time <5 ns HP 8112A
Cable BNC, 3 feet HP 10503A
Cable BNC, 9 inches, Qty 2 HP 10502A
Adapter BNC tee (m) (f) (f) HP 1250-0781
Adapter BNC (f-f) HP 1250-0080
Feedthrough 50
Ω
, BNC (m) and (f) HP 10100C
1
Check the rear panel
DC CALIBRATOR
output level.
If you are not sure how to check the
DC CALIBRATOR
, see "To check the
output of the
DC CALIBRATOR
," on page 4–6.
2
Load the default calibration factors.
a
Set the rear-panel
CALIBRATION
switch to
UNPROTECTED
(up position).
b
Press
Print/Utility
, then press the
Self Cal Menu
softkey.
c
Press the Load Defaults softkey.
Self-calibration hint
Thie instrument is self-calibrated at the factory. However, it should be
self-calibrated again in its working environment after a 30-minute warmup to
obtain the best accuracy.
Service
Adjusting the Oscilloscope
4–31