Test Procedure - Teledyne Lecroy AP033 Operator's Manual

AP033 Active Differential Probe

Test Procedure

NOTE: This procedure must be performed with the probe set to Manual gain control. See
Operating with Teledyne LeCroy Oscilloscopes on page 13 for more information about
controlling probe settings in different software versions.
A. Check Gain Accuracy
1. From the oscilloscope front panel, select Channel 1. Set the AP033 gain control to
2. If necessary, set the probe Offset to 0.000 V.
3. Using a BNC female-to-female adapter, connect one end of a BNC cable to the probe
4. Connect one end of a second BNC cable to the output of the Function Generator.
5. Set the DMM to measure AC Volts.
6. Set the mode of the Function Generator to Sine Wave; the frequency to
7. Record the measured amplitude to 100 μV resolution in the Test Record.
8. Unplug the output cable from the DMM. Remove the BNC-to banana plug adapter
9. AutoZero the AP033.
10. Carefully align the four pins that correspond to the Differential Drive No Termination
11. Connect the banana plugs of the precision terminator to the digital multimeter
12. Connect the free end of the output cable from the Function Generator to the
13. After the DMM reading has stabilized, record the measured output amplitude to 100
14. Divide the measured output voltage, recorded in step A-13, by the sine wave
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1.800.561.8187
Manual, the Probe gain to X1, and the Probe Attenuation to /1. (/1 is the same as
÷1)
end of the ProBus Extension Cable. Connect the Precision 50 Ω Terminator to the
other end of the BNC cable.
Attach the BNC-to-dual-male banana plug adapter to the free end of the second BNC
cable. Connect the banana plugs to the Digital Multimeter (DMM).
approximately 1 kHz; and the output amplitude to approximately 200 mV rms, as
measured by the DMM.
from the end of the cable.
portion of the AP03x- CF01 Calibration Fixture with the input receptacles in the
AP033 probe head. Press the probe into the fixture to fully engage the pins.
(DMM)
Differential Drive No Termination connector of the AP033 Calibration Fixture.
μV resolution in the Test Record.
generator output voltage (probe input voltage) from step A-7. Subtract 1.0 from the
ratio and multiply the result by 100 to get the error in percent.
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