Teledyne LeCroy AP033 User Manual
Page 34
AP033 Active Differential Probe
28
922260-00 Rev A
3. Using a BNC female-to-female adapter, connect one end of a BNC cable to the probe end of the
ProBus Extension Cable. Connect the Precision 50Ω Terminator to the other end of the BNC
cable.
4. Connect one end of a second BNC cable to the output of the Function Generator. 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).
5. Set the DMM to measure AC Volts.
6. Set the mode of the Function Generator to Sine Wave; the frequency to approximately 1 kHz;
and the output amplitude to approximately 200 mV rms, as measured by the DMM.
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 from the
end of the cable.
9. Autobalance the AP033 by pressing the AUTOBALANCE menu button.
10. Carefully align the four pins that correspond to the Differential Drive No Termination 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.
11. Connect the banana plugs of the precision terminator to the digital multimeter (DMM)
12. Connect the free end of the output cable from the Function Generator to the Differential Drive
No Termination connector of the AP033/AP034 Calibration Fixture.
13. After the DMM reading has stabilized, record the measured output amplitude to 100 μV
resolution in the Test Record.
14. Divide the measured output voltage (recorded in step A-13) by the sine wave 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.
15. Record the answer to two significant places (±x.xx%) on line A-15 in the Test Record.
16. Verify that the X1 gain error is less than ±2%.
17. Change the Probe Atten to /10 and the Probe Gain to X10.