LeCroy WaveSurfer 400 Series Service Manual page 73

Compare the test results to the corresponding limit in the test record.
Set Trigger Slope 1 : Neg
Acquire 10 sweeps and record in Table 13 the level readout displayed below 100
mV in the icon 1, at top left.
Set trigger to channels 2, 3 and 4 and for both POS and NEG slope move input
signal to appropriate channel and compare the test results to the corresponding
limit in the test record.
Rev. D Sept 2007 Performance Verification 5-33