HP 54645A User's And Service Manual page 223

Testing, Adjusting, and Troubleshooting
To perform the self-calibration
Check the rear panel
1
If you are not sure how to check the
of the
Load the default calibration factors.
2
a
b
c
Vertical After the message "Default scope calibration factors have been
3
loaded" is displayed on the lower side of the display, press
self cal
Follow the instructions on the display, then press
4
After the message "Press Continue to return to calibration menu"
5
appears on the display, press the
Connect a pulse generator set to 100 kHz and 1 V
Delay self cal 6
for HP 54645A of less than 10 ns, to channels 1 and 2. Place the feedthrough at the
Only BNC tee. Make sure you use the HP 10502A cables to ensure equal
cable lengths.
Press the
7
Set the rear-panel
8
Delay self cal Connect channels A1 and A2 to the front-panel probe adjust signal
9
for HP 54645D (5 V
ground leads on the 10:1 probes to the front-panel ground lug using
Only
the banana ground plug (HP 1252-7310).
Connect digital channel D0 to the front-panel probe adjust signal
10
(5 V
Connect the ground lead of this cable to the front-panel ground lug.
Press the Delay softkey, then follow the instructions on the display.
11
Set the rear-panel
12
7-34
CALIBRATOR
CALIBRATOR."
Set the rear-panel CALIBRATION switch to the UNPROTECTED
position.
Press
Print/Utility
Self Cal Menu.
Press the Load Defaults softkey.
Delay softkey, then follow the instructions on the display.
CALIBRATION
, 1.2 kHz) using two 10:1 probes (HP 10074A). Connect the
p-p
, 1.2 kHz) using the 16-channel cable (HP 54620-61801).
p-p
CALIBRATION
output level.
, see "To check the output
CALIBRATOR
. Then press Service Menu and
Continue softkey
switch to
PROTECTED
switch to
PROTECTED
Vertical.
Continue.
, with a rise time
p-p
.
.