Keysight Technologies InfiniVision 6000L Series, Service Manual

Page: 25 / 100

Testing Performance
2
6000L Series Oscilloscopes Service Guide 25
To verify digital channel threshold accuracy (MSO models only)
This test verifies the digital channel threshold accuracy specification of the
Keysight 6000L 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.
Verifying Test Results
After each threshold test, record the voltage reading in the Performance Test
Record on page 46 . To verify whether a test passes, verify that the voltage reading
is within the limits in the Performance Test Record.
Table 4 Equipment Required to Test Digital Channel Threshold Accuracy
Equipment Critical Specifications Recommended Model/Part
Digital Multimeter 0.1 mV resolution,
0.005% accuracy
Keysight 34401A
Oscilloscope Calibrator DC offset voltage 6.3 V Fluke 5820A
BNC-Banana Cable Keysight 11001-60001
BNC Tee Keysight 1250-0781
BNC Cable Fluke 50
Ω
cable, P/N 686318
BNC Test Connector, 8-by-2 User-built (See page 22 .)
Probe Cable Keysight 01650-61607