Pulse Width - LeCroy Waverunner2 Series Service Manual

5.11 Smart Trigger
5.11.1 Trigger on Pulse Width 10 nsec
a. Pulse Width < 10 nsec
! Recall xxxP046.PNL or configure the DSO
Panel Setups
Channels trace ON
Input coupling
Input gain
Input offset
Trigger setup
Setup Smart Trigger
Trigger on
At the end of
Width < 10 nsec
Width > 10 nsec
Trigger mode
Time base
! Connect the RF output of the HP8648B generator through a 5ns 50 Ohm BNC
coaxial cable into Channel 1.
! Set the generator frequency to 100 MHz. Adjust the generator output amplitude
to get 5 divisions peak to peak .
! Check that the scope Triggers. Record the test result in Table 12.
! Set Width < 10 nsec
! Check that the scope doesn't trigger : slow trigger and no flashes in box next
to normal. Record the test result in Table 12.
b. Pulse Width > 10 nsec
! Set the generator frequency to 40 MHz.
! Set Width < 10 nsec
! Check that the scope Triggers. Record the test result in Table 12.
! Set Width < 10 nsec
! Check that the scope doesn't trigger : slow trigger and no flashes in box.
Record the test result in Table 12.
Rev. D
: Recall FROM DEFAULT SETUP
Channel 1
DC 50Ω Ω Ω Ω
:
: .5 V/div.
: 0 mV
: Smart
Glitch
: 1
: Neg.
: On
: Off
: Norm
: 5 nsec/div.
Off and Width > 10 nsec ON
Off and Width > 10 nsec ON
On and Width > 10 nsec Off
Performance Verification 5-43