LeCroy WaveSurfer 400 Series

5.4.2 External Trigger Input Impedance
a. DC 50Ω
 Recall Input Impedance - 50 ohm ext x1.lss or configure the DSO :
Select Setup trigger
Trigger on : EXT
Impedance : DC 50Ω
 Connect the DMM to External, and measure the input impedance, reverse the
meter leads and measure the input impedance.
 Average these two numbers and record the input impedance in Table 2, and
compare the result to the limit in the test record.
 Recall Input Impedance - 50 ohm ext x10.lss or Set Trigger Source to Ext/10.
 Repeat the test.
 Record the measurements in Table 2, and compare the test results to the
limits in the test record.
Rev. D Sept 2007 Performance Verification 5-7