Chapter 3: Testing Performance
To verify threshold accuracy
3–26
To verify threshold accuracy
This test verifies the data channel threshold accuracy specifications of the Agilent
54830/31/32/33D Mixed Signal Oscilloscope.
Threshold accuracy test limits =
±(100 mV + 3% of threshold setting).
When to Test You should perform this test every 24 months or after 4000 hours of operation,
whichever comes first.
What to Test Use these instructions to test the threshold settings of digital channels D15-D0.
Verifying Test Results After each threshold test, record the voltage reading in the
Performance Test Record at the end of this chapter. To verify whether a test passes, verify that
the voltage reading is within the limits in the Performance Test Record.
Let the Equipment Warm Up Before Testing For accurate test results, let the test
equipment and the oscilloscope warm up 30 minutes before testing.
Equipment Required
1 Turn on the test equipment and the oscilloscope. Let them warm up for 30 minutes
before starting the test.
2 Set up the power supply.
a Set the power supply to prove a DC offset voltage.
b You may use the multimeter to monitor the power supply DC output voltage.
3 Using the method described in section two of this manual connect the power supply
output to DO digital channel on the oscilloscope.
Test Threshold Accuracy only on the 54830/31/32/33D Mixed-Signal Oscilloscope
You need to perform these instructions only if you will be testing the Agilent 54830/31/32/33D Mixed-Signal
Oscilloscope.
Equipment Critical Specifications Recommended Model/Part
Digital Multimeter 0.1 mV resolution, 0.005% accuracy Agilent 34401A
Power Supply -5 V to 5 V CD Agilent 6114A
BNC Cable Agilent 10503A
BNC Grabbers
Digital Probe Kit
54826-68701
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