To Verify Voltage Measurement Accuracy - Agilent Technologies InfiniiVision 7000 Series Service Manual

To verify voltage measurement accuracy

7000 Series Oscilloscopes Service Guide
Before proceeding to the next step, make sure that you
have recorded the oscilloscope calibrator voltage levels for
each of the threshold settings shown in
9 Use the 8- by- 2 test connector to connect digital channels
D15- D8 to the output of the oscilloscope calibrator. Then
connect the D15- D8 ground lead to the ground side of the
8- by- 2 connector.
10 Repeat this procedure (steps 6 through 8) for digital
channels D15- D8 to verify threshold accuracy and record
the threshold levels in the Performance Test Record (see
57). Be sure to set the thresholds with the User
page
softkey for the appropriate set of channels.
This test verifies the accuracy of the analog channel voltage
measurement for each channel. In this test, you will measure
the dc voltage output of an oscilloscope calibrator using dual
cursors on the oscilloscope, and compare the results with
the multimeter reading.
Test limits: ±2.0% of full scale ±1 LSB*
• Full scale is defined as 32 mV on the 2 mV/div range.
• Full scale on all other ranges is defined as 8 divisions
times the V/div setting.
*1 LSB = 0.4% of full scale
Testing Performance
Table 5.
2
33