To Adjust The Option 005 Offset (R15) - HP 54616B User And Service Manual

To adjust the Option 005 offset (R15)

The oscilloscope must be calibrated before performing this adjustment. Refer to
"To perform the self-calibration" on page 4–25.
Table 4-13 Equipment Required
Equipment Required
Digital Multimeter
Adapter
Set up the oscilloscope for the voltage adjustment.
1
a
b
c
d
e
f
g
h
Adjust R15 (below
2
so that the measured voltage on the digital multimeter is 0 volts ± 1
mV.
If adjusting R15 does not bring the voltage within tolerance, see "To
troubleshoot Option 005" at the end of the troubleshooting section.
Critical Specification
0.1 mV resolution, accuracy ±0.05%
BNC (m) to dual banana post
Turn off the oscilloscope.
Remove the cabinet from the oscilloscope.
Connect the negative lead of the digital multimeter to a ground point
on the oscilloscope.
Connect the oscilloscope rear-panel VERT OUT connector to the
voltage inputs of the digital multimeter (DMM) using the DMM's test
leads and the BNC to dual banana post adapter.
Turn on the oscilloscope
Setup the digital multimeter for a DC voltage measurement.
Press the front panel key on the oscilloscope.
Setup
Press the Default Setup softkey on the oscilloscope.
VERT OUT
Adjusting the Oscilloscope
Recommended
Model/Part
HP 34401A
HP 10110B
connector) on the Option 005 PC board
Service
4–31