Plug-In Calibration - HP 54710A User's Reference Manual

Calibration Overview

Plug-in Calibration

Plug-in Calibration

Plug-in calibration allows the oscilloscope to establish the calibration factors
for a particular plug-in independent of the mainframe in which it is
calibrated. These calibration factors are stored in the plug-in's EEPROM, so
the factors stay with plug-in, not with the mainframe the plug-in was
calibrated in. Plug-in calibration is initiated from the "Utility/Calibrate/
Calibrate Plug-in" menu.
Plug-in calibrations should be done annually or if the plug-in has been
repaired or reprogrammed. The equipment needed to perform a plug-in
calibration is a BNC cable (1 to 2 ft).
Because the intent is for the oscilloscope to determine the calibration factors
for the plug-in only, you should perform plug-in calibrations right after
calibrating the mainframe. That way, any drifts in the mainframe calibration
(due to time or temperature) will not cause drift in the calibration factors
assigned to the plug-in.
Inside the plug-in, there is a switch that enables or disables the ability to
write into the plug-in's EEPROM memory. You must remove the cover of the
plug-in to gain access to the switch. To prevent access to the switch, place a
sticker on the plug-in cover.
5–4