LeCroy WaveSurfer 400 Series Service Manual page 72

5.10.4 Channel Trigger at −2.5 Divisions Threshold
5-32 Performance Verification
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.
Recall Trigger - CH1 -2.5 div pos slope.lss or configure the DSO as shown in
5.10.2 and for each channel make the following change :
Set Trigger level : DC −250 mV
Connect the output of the generator to Channel 1 through a 50 Ohm coaxial
cable.
Press Clear Sweeps,
Acquire 10 sweeps and record in Table 13 the level readout displayed below
100 mV in the icon 1, at top left.
Rev. D Sept 2007