Tektronix MDO4000C Benutzerhandbuch Seite 114

Triggereinstellung
Trigger Type
Pulse Width
Timeout
Runt
Logic
90
Trigger Conditions
Trigger on pulses that are less than, greater than, equal to, or
not equal to a specified time. Additionally, you can trigger when
a pulse width is within or outside a range of two different
specified times. You can trigger on positive or negative pulses.
Pulse width triggers are primarily used on digital signals.
Trigger when no pulse is detected within a specified time. The
signal stays above or below (or either above or below) a set
value for a set amount of time.
Trigger on a pulse amplitude that crosses one threshold but
fails to cross a second threshold before recrossing the first.
You can detect positive or negative (or either) runts, or only
those wider than, less than, greater than, equal to, or not equal
to a specified width. Runt triggers are primarily used on digital
signals.
Trigger when all channels transition to the specified state. Use
multipurpose knob a to select a channel. Push the appropriate
button on the side menu to set that channel's state to High (H),
Low (L), or Don't Care (X).
Push Clock on the side menu to enable clocked (state)
triggering. You can have at most a single clock channel. Push
Clock Edge on the lower menu to change the polarity of the
clock edge. Turn off clocked triggering and return to unclocked
(pattern) triggering by selecting the clock channel and setting it
to high, low, or don't care.
For unclocked triggering, by default, triggering occurs when the
selected condition goes true. You can also select triggering
when the condition goes false, or time-qualified triggering.
You can use up to 21 channels for a Logic trigger (4 analog,
16 digital, and 1 RF).
HINWEIS. To use the RF input in a Logic trigger, you must first
install the MDO4TRIG application module.
HINWEIS. Optimum Logic trigger performance is achieved by
using only analog channels or only digital channels.
Benutzerhandbuch für die Oszilloskop-Baureihe MDO4000C