Agilent Technologies XX3625 Service Manual page 48

Chapter 3: Testing Performance
To test voltage measurement accuracy
Figure 3-7
Set the scale from the
table
Set the offset from the
table
Vertical Scaling and Offset for Voltage Accuracy Measurement
To Set Vertical Scale and Position
You can also use the knobs to set the vertical scale and position, but it is usually easier to use the dialog
box, particularly for the fine position setting.
If the test fails
Voltage measurement errors can be caused by the need for self-calibration. Before troubleshooting the
instrument, perform self-calibration. See "To run the self-calibration" in chapter 4, "Calibrating and
Adjusting." If self-calibration fails to correct the problem, the cause may be the attenuator or main
assembly.
Ω