Testing Performance 2
5000 Series Oscilloscopes Service Guide 35
To verify horizontal ∆t accuracy
The following test is optional because horizontal ∆t accuracy is
a characteristic, not a specification.
This test verifies the horizontal ∆t accuracy. In this test, you
will use the oscilloscope to measure the output of a time mark
generator.
Test limits: ±0.0025% of reading ±0.1% of screen width ±20 ps
(same channel)
1 Connect the equipment:
a Connect the calibrator output to the oscilloscope channel
1 input.
2 Set up the signal source.
a Select Marker on the oscilloscope calibrator.
b Set the calibrator for 100 µs markers (period = 100 µs).
Tab le 7 Equipment Required to Verify Horizontal ∆t Accuracy
Equipment Critical Specifications
Recommended
Model/Part Qty
Oscilloscope Calibrator 14 mV to 35 Vdc, 0.1 V resolution, 25 MHz - 500 MHz
sine wave, stability 5 ppm after 1/2 hour
Fluke 5820A 1
Cable BNC, 3 feet Agilent 10503A 1
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