Teledyne LeCroy WaveRunner XI SERIES Operator’s Manual - Manual (Page 71)

O
PERATOR
’
S
M
ANUAL
Runt Trigger
The Runt trigger is programmed to occur when a pulse crosses a first threshold line and fails to cross a second
threshold line before recrossing the first. You can select both voltage thresholds within a time range of 100 ps to
20 s. Other defining conditions for this trigger are the edge (triggers on the slope opposite to that selected) and
runt width.
R UNT T RIGGER S ETUP
1. Touch the Trigger descriptor label.
2. If applicable, touch the Smart trigger button, then touch the Runt trigger button.
3. Touch inside the trigger Source field and select a source on which to trigger. If
4. you select an external trigger source, you will also need to set a coupling mode.
5. Touch inside the Level data entry field and enter a value, using the pop-up keypad.
6. Select Positive or Negative polarity.
7. Touch the Less Than button and enter a pulse-width value in the Upper Limit field.
o Or touch the Greater Than button and enter a pulse-width value in the Lower Limit field.
o Or touch the In Range button. Then touch the Delta button to set up a nominal range, plus or minus a
delta value in seconds. Touch inside the Nominal Width and Delta fields and enter values, using the
pop-up numeric keypads. Alternatively, touch the Limits button to set up a precise pulse-width range
by setting Lower Limit and Upper Limit values, using the pop-up keypads.
o Or touch the Out Of Range button and perform the same range setups as for In Range triggering.
Slew Rate Trigger
1. Touch the Trigger descriptor label.
2. If applicable, touch the Smart trigger button, then touch the Slew Rate trigger button.
3. Touch inside the trigger Source field and select a source on which to trigger. If
4. you select an external trigger source, you will also need to set a coupling mode.
5. Touch inside the Level data entry field and enter a value, using the pop-up keypad.
6. Select Positive or Negative polarity.
7. Touch the Less Than button and enter a pulse-width value in the Upper Limit field.
o Or touch the Greater Than button and enter a pulse-width value in the Lower Limit field.
o Or touch the In Range button. Then touch the Delta button to set up a nominal range, plus or minus a
delta value in seconds. Touch inside the Nominal Width and Delta fields and enter values, using the
pop-up numeric keypads. Alternatively, touch the Limits button to set up a precise pulse-width range
by setting Lower Limit and Upper Limit values, using the pop-up keypads.
o Or touch the Out Of Range button and perform the same range setups as for In Range triggering.
DISPLAY FORMATS
1. In the menu bar, touch Display; then touch Display Setup in the drop-down menu.
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2. Touch one of the Grid combination buttons. Autogrid automatically adds or deletes grids as you select more
or fewer waveforms to display.