Keysight Technologies InfiniiVision 2000, Service Manual

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28 2000/3000 X-Series Oscilloscopes Service Guide
2
Testing Performance
9 When testing 3000 X-Series MSOs, use the 8-by-2 test connector to connect
digital channels D15-D8 to the output of the precision source. 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 page 53 ). Be sure to set the thresholds with the User softkey for the
appropriate set of channels.
To verify DC vertical gain accuracy
This test verifies the accuracy of the analog channel DC vertical gain for each
channel.
In this test, you will measure the dc voltage output of a precision source using the
oscilloscope’s Average - Full Screen voltage measurement and compare the results
with the multimeter reading.
Table 6 DC Vertical Gain Accuracy Test Limits
Models Test Limits Notes
2000 X-Series ±3% of full scale (>= 10 mV/div);
±4% of full scale (< 10 mV/div)
• Full scale is defined as 32 mV on the 2 mV/div range
and the 1 mV/div range.
• Full scale on all other ranges is defined as 8 divisions
times the V/div setting.
3000 X-Series ±2.0% of full scale