Service Information
P6021 Instruction Manual
23
6. Turn on the calibrator output.
7. Adjust the digital oscilloscope triggering for a centered waveform of
approximately 500 mV
p-p
.
8. Adjust the fine volts/div for a near full-screen vertical waveform. Nominal
deflection at 500 mV/div will be 5 divisions. A digitizer with adjustable
volts/div can increase resolution to approximately 8 divisions.
9. Choose the peak-to-peak measurement function of the oscilloscope and
fine-adjust the calibrator output for a 500 mV
p-p
digitizer reading by
selecting and varying the % delta output control of the calibrator.
10. Turn on averaging (16 or greater), and readjust the calibrator output if
necessary to obtain a stable 500 mV
p-p
reading. Allow sufficient time for the
measurement to update with averaging turned on.
11. If your digitizer only supports cursor measurements, adjust the cursor
readout for the nominal 500 mV
p-p
and adjust the calibrator output for a
peak-to-peak amplitude waveform that corresponds to the cursor settings.
You may have to adjust the oscilloscope offset to center the waveform
between the cursors.
12. For the remainder of this test, 500 mV
p-p
is the reference reading.
13. Change the calibrator output frequency to 450 Hz.
14. Set the oscilloscope horizontal sensitivity to 500
m
s/div to obtain a centered
waveform. Turn averaging off to provide for a quicker waveform update.
15. Turn averaging on.
16. Allow the oscilloscope averaged reading to stabilize. The peak-to-peak
amplitude reading must be ≥ 354 mV
p-p
(0.707 * 500 mV
p-p
reference
amplitude). If using statistical averaging, allow enough update time for the
mean value to stabilize.
17. If using cursors to take this measurement, adjust the cursors to measure the
peak-to-peak amplitude. Use averaging if possible.
18. Set the calibrator output to off. Do not change any circuit connections.
10 mA/mV Position Test:
1. Set the termination box to the 10 mA/mV position.
2. Set the oscilloscope vertical sensitivity to 50 mV/div and the horizontal
scale to 20
m
s/div.
3. Set the calibrator for a 10 kHz, 1.06066 A (3 A
p-p
) output with the delta %
function is turned off.