Testing Performance
To verify horizontal Dt and 1/Dt accuracy
To verify horizontal ∆t and 1/∆t accuracy
This test verifies the horizontal ∆t and 1/∆t accuracy. In this test, you will use the oscilloscope to measure the output of a time mark generator.
| Test limits: ±0.01% of reading ±0.1% of full scale ±40 ps (same channel) | ||
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Equipment Required to Verify Horizontal ∆t and 1/∆t Accuracy | |||
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| Equipment | Critical Specifications | Recommended Model/Part |
| Oscilloscope Calibrator | Stability 5 ppm after 1/2 hour | Fluke 5820A |
| Cable | BNC, 3 feet | Agilent 10503A |
| Feedthrough | 50Ω, BNC connectors (m) and (f) | Agilent 11048C |
1Connect the oscilloscope calibrator to channel 1 using the 50 Ω
feedthrough at the oscilloscope input. Then, select Marker and set the calibrator for 100 ∝s markers.
2Set up the oscilloscope.
a Press the Display key, then set the Vectors softkey to off.
b Press the Autoscale key.
c Set the time base to 20 ∝s/div.
d Press the Main/Delayed key, then set the Time Ref softkey to Left. e Adjust the Trigger Level knob to obtain a stable display.
3Press the Quick Meas softkey, set the Source softkey to 1, then select and measure Frequency and Period. Measure the following:
Frequency 10 kHz — The test limits are 9.98 kHz to 10.02 kHz. Period 100 ∝s — The test limits are 99.79 ∝s to 100.2 ∝s.
If the measurements are not within the test limits, see the “Troubleshooting” chapter. Then return here.