5-6 Performance Verification Rev. D Sept 2007
c. AC 1MΩ
Recall Input Impedance - 1 Mohm AC x1.lss or configure the DSO :
Panel Setups : Recall FROM DEFAULT SETUP
Channels Trace ON Channel 1, Channel 2, Channel 3 & Channel 4
Input Coupling : AC 1MΩ on all 4 Channels
Input gain : 20 mV/div. on all 4 Channels
Time base : 50 ηsec/div.
Trigger mode : Auto
Set the DMM with Ohms and Ohms sense to provide a 4 wire measurement.
Connect it to Channel 1.
Measure the input impedance.
Record the measurements in Table 2, and compare the test results to the
limits in the test record.
Repeat the above test for all input channels.
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