Operator’s Manual
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25
Performance Verification Test Setup
Check Gain Accuracy
1.
Connect the probe system and test equipment as shown in the diagram above. Use the
C1 input for the probe.
2.
Set the DMM to measure V
AC
.
3.
Set the function generator to output a square wave of 100 Hz amplitude of 1.0 V
PK-PK
.
4.
Set the oscilloscope Timebase to 10 mS/div and C1 Vertical Scale to 200 mV/div.
5.
Turn on measurements. Set oscilloscope P1 to measure the amplitude (ampl) of C1.
6.
Adjust the generator output voltage so that the voltage measured on the DMM is as
close to 500 mV
RMS
as possible (this should be 500
±
1 mV
RMS
).
7.
Record the ampl(C1) measurement on the test record.
8.
Calculate the gain accuracy (%) using the equation:
(
𝑆𝑆𝑡𝑡𝑒𝑒𝑒𝑒
7
𝑣𝑣𝑣𝑣𝑣𝑣𝑣𝑣𝑒𝑒
– 1.0)
∗
100
9.
Record the gain accuracy on the test record.
