Teledyne LeCroy WaveRunner XI SERIES Operator’s Manual - Manual (Page 66)

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4. If applicable, touch the Pattern tab. For each input you want to include in the logic pattern, touch inside the
State field and select a logic state: Low or High. Select Don't Care for all other inputs.
5. Touch inside the Level data entry field for each input included in the pattern, and enter a voltage level
threshold, using the pop-up keypad.
TV Trigger
TV triggers provide stable triggering on standard or custom composite video signals. Use them on PAL, SECAM,
or NTSC systems.
TV T RIGGER S ETUP
1. Touch the Trigger descriptor label.
2. In the Trigger dialog, touch the TV trigger button
3. Touch one of these buttons (NTSC or PAL/SECAM) to select a television
standard.
4. Touch inside TV Trigger Source and select the Ext (location of Trigger Out
cable) from the pop-up menu.
Note: The channel that you have the VT75 Module connected to is
automatically designated TV Signal in the menu.
5. Touch inside Polarity and select positive or negative polarity. This selection is
independent of the polarity selected for Edge trigger (positive) in the "Trigger"
setup dialog.
6. Check the Trigger on Any Line checkbox if you do not want to specify one. In
this case the oscilloscope will trigger on any sync pulse.
7. Touch inside # of Fields and make a selection (1 to 8) from the pop-up menu.
8. Touch inside Line and enter a line number, using the pop-up keypad. The
maximum line number that you can enter depends on the television standard
(NTSC/PAL/SECAM) and the interlace factor selected. For NTSC, line 526 is
the same as line 1; for PAL, line 626 is the same as line 1.
9. Touch inside Field and make a selection from the pop-up menu. The maximum
field number that you can select is limited by your selection in # of Fields. If # of
Fields above is set to 1, this selection is disabled.
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