LeCroy Waverunner2 LT374L - Pulse Width

Rev. D Performance Verification 5-43
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 :
Recall FROM DEFAULT SETUP
Channels trace ON
Channel 1
Input coupling :
DC 50
Ω
ΩΩ
Ω
Input gain :
.5 V/div.
Input offset :
0 mV
Trigger setup :
Smart
Setup Smart Trigger
Glitch
Trigger on :
1
At the end of :
Neg.
Width < 10 nsec :
On
Width > 10 nsec :
Off
Trigger mode :
Norm
Time base :
5 nsec/div.
!
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
Off
and Width > 10 nsec
ON
!
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
Off
and Width > 10 nsec
ON
!
Check that the scope Triggers. Record the test result in Table 12.
!
Set Width < 10 nsec
On
and Width > 10 nsec
Off
!
Check that the scope
doesn’t trigger :
slow trigger and no flashes in box.
Record the test result in Table 12.