ZD Series High Impedance Differential Probes
16
12.
Calculate the gain error by taking 100 * [(Measured Output Voltage) –
(Expected Output Voltage)] / (Expected Output Voltage). Record this value
as the % Gain Error. Verify that this is within the limits given on the data
sheet.
13.
Connect the signal generator to the DMM input and set the output
amplitude of the signal generator to 500 mVrms ±
1 mV as measured on the
DMM.
14.
Record the output voltage to 1 mV resolution as "Generator Output Voltage,
low range" in the Test Record. Be careful not to alter the output amplitude
after the reading is recorded.
15.
Set the vertical scale of C1 to 200 mV/. Select the probe dialog tab and
record the value listed for ‘Effective Gain, low range’ on the test record.
16.
Take the recorded generator output voltage and divide by the effective gain.
Record this value as ‘Expected Output Voltage, low range’ on the test
record.
17.
Connect the banana plugs of the precision 50Ω adapter to the input of the
DMM. Measure the output voltage and record this as ‘Measured Output
Voltage, low range’ on the test record.
18.
Calculate the gain error by taking 100 * [(Measured Output Voltage) –
(Expected Output Voltage)] / (Expected Output Voltage). Record this value
as the % Gain Error. Verify that this is within the limits given on the data
sheet.