HDO9000 High Definition Oscilloscopes Operator's Manual
MultiStage Triggers
MultiStage types arm on the A event, then trigger on a subsequent event. The options for the
triggering event depend on the type of arming event.
See
,
and
.
Measurement Trigger
Measurement is not technically a trigger, per se, but permits the instrument to stop and display
acquisition based on a post-processing measurement result, similar to a trigger. The available
measurements depend on your model instrument and the options installed, and each will offer a
different method for specifying the "trigger" conditions, based on the type of measurement. Generally,
you will be able to specify a triggering value or range of values, and for @level parameters, the voltage
level at which the measurement is taken.
A measurement can be defined as a standalone trigger condition or as the final condition in a
multistage Cascaded trigger.
TV Trigger
TV triggers on a specified line and field in standard (PAL, SECAM, NTSC, HDTV) or custom composite
video signals.
1. Choose the
Source
signal input.
2. Choose the signal
TV Standard
. To use a custom signal, also enter the:
l
Frame Rate
l
# of Fields
per line
l
# of Lines
l
Interlace
ratio
3. Choose the
Line
and
Field
upon which to trigger.
64