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101
200 mV
0.160 Vrms
a) Set the amplitude of <SINE OUT>.
b) Set <Sensitivity>.
c) Wait 10 seconds, then record <R>, then test next group of Sensitivity-Sine Output.
4. Repeat from 3)-a) to 3)-c) until all the Sensitivity-Sine Output are tested over. Frequency response is checked at
frequencies above 1 kHz. Set <Ref. Frequency> in the following sequence:
Test Frequencies
24 kHz
48 kHz
72 kHz
96 kHz
a) Set <Sensitivity> to <1 V>.
b) Set the amplitude of the SINE OUT to <1Vrms>.
c) Set <Ref. Frequency> in the upper sequence.
d) Wait 10 seconds, then record <R>, then test next frequency.
e) Repeat from 4)-c) to 4)-d) until all the frequencies are tested over.
5. End the test and fill results in the performance test form.
6.8 Outputs of Dual Channels and 4 AUX Inputs
This test measures the DC accuracy of the DC outputs and inputs of the lock-in.
Device
Use a linear DC regulator to generate a DC input.
Use a DVM to measure the DC output of the lock-in.
Connect a 50
Ω
BNC termination to the A/I input of the lock-in.
Steps
1. Turn the lock-in off and on to restart it.
2. Set <Ref.Source> to <Internal>.
3. Follow the steps below:
a) Use a cable to connect CH1 or CH2 of the lock-in to the DVM. Set the DVM to 19.999 V range.
