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Functional Test Procedure
Perform this procedure to confirm the basic operation of an HVD3000 series probe or to
aid in determining the source of a problem, rather than to verify the accuracy of the probe.
You can perform the Functional Test without removing the probe covers.
Other than a Teledyne LeCroy oscilloscope, no special test equipment is required for the
functional test.
1. Connect the probe to any oscilloscope vertical channel and open the Cn dialog.
2. Touch AUTO ZERO on the probe dialog (behind the Cn dialog).
3. If necessary, adjust the OFFSET to 0.000 V.
4. Using accessory clips, attach the red clip to the + CAL out and the black clip to the
ground post of the CAL out signal. For oscilloscopes with the CAL signal on a BNC
connector, a BNC-to-Banana adapter (e.g., Pomona model 1296) may be used.
5. Press AUTOSETUP.
6. Set the sensitivity of the probe to 1 V/Div.
7. Set the CAL output to 1 Vp-p square wave.
8. Verify that the displayed square wave is 1 Vp-p centered at +0.5 V.
9. Reverse the accessory leads on CAL out and verify that the displayed square wave
is still 1 V, but is now centered at –0.5 V.
10. Change the COUPLING on the channel setup dialog to Grounded to verify that the
signal disappears and that the trace is still centered on the screen.
11. Verify that the probe attenuation shows the following:
• x100 for HVD3102A
• x50 for HVD3106A and HVD3206A
• x50 for HVD3220
• x200 for HVD3605A
12. Set the VOLTS/DIV to 100 V.
13. Verify that the probe attenuation now shows:
• x1000 for HVD3102A
• x500 for HVD3106A and HVD3206A
• x500 for HVD3220
• x2000 for HVD3605A
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Operator's Manual
27
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