Teledyne LeCroy WavePro 7 Zi_Zi-A - Manual (Page 70)

WavePro 7 Zi/Zi-A Oscilloscopes
62 922137-00 Rev A
TV
Not available on all instruments, TV triggers provide stable triggering on
standard or custom composite video signals. Use them on PAL, SECAM,
NTSC, or HDTV systems.
MulitStage
Touching this MultiStage trigger type shows the additional MultiStage
types on the dialog. Select from Cascaded, QualFirst, and Qualified as
follows:
C
ASCADED
The Cascaded trigger allows you to define successive trigger Stages
(referred to as Stage A, B, C, and D) as arm, trigger/arm, trigger/arm,
trigger criteria, respectively.
Q
UAL
F
IRST
In single trigger mode, QualFirst arms the oscilloscope on the A event, and
then triggers on all subsequent B events.
Note: This button is enabled when using the sequence sampling mode. It is
commonly used in sequence mode for disk drive applications with the
index pulse defined as the A qualifier signal and the servo gate signal as the
B triggering events.