Keysight Technologies InfiniiVision 2000, Service Manual

Page: 24 / 86

24 2000/3000 X-Series Oscilloscopes Service Guide
2
Testing Performance
To verify digital channel threshold accuracy (MSO models only)
This test verifies the digital channel threshold accuracy specification of the
Keysight 2000/3000 X-Series oscilloscopes.
Threshold accuracy test limits: ±(100 mV + 3% of threshold setting)
When to Test
You should perform this test every 12 months or after 2000 hours of operation,
whichever comes first.
What to Test
Use these instructions to test the threshold settings of digital channels D7-D0.
Then, use the same instructions to test digital channels D15-D8 (on
3000 X-Series).
Verifying Test Results
After each threshold test, record the voltage reading in the Performance Test
Record on page 53 . To verify whether a test passes, verify that the voltage reading
is within the limits in the Performance Test Record.