Tektronix MSO3000 Series - Page 97

Trigger Setup
Trigger Type Trigger Condit
ions
Logic
Trigger when a
ll channels transition to the specified
state. Use multipurpose knob a to select a channel.
Push the appropriate side menu button to set that
channel's sta
te to High (H), Low (L),orDon't Care (X).
Use Clock on the side menu to enable clocked (state)
triggering. You can have at m ost a single clock channel.
Push Clock Ed
ge 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 chann
el 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 tri
ggering when the condition goes false, or
time-qualified triggering.
You can use up to 20 channels for a logic trigger
(4 analog a
nd 16 digital) with MSO3000 Series
oscilloscopes.
NOTE. Optimum Logic trigger performance is achieved
by using o
nly analog channels or only digital channels.
Setup an
dHold
Trigger
when a logic data input changes state inside of
the setup or hold time relative to a clock edge.
Setup is the amount of time that data should be stable
and not c
hange before a clock edge occurs. Hold is the
time that data should be stable and not change after
a clock edge occurs.
MSO300
0 Series oscilloscopes are capable of multiple
channel Setup and Hold triggering, and can monitor
the state of an entire bus for setup and hold violations.
You can
use up to 20 channels for a Setup and Hold
trigger (4 analog and 16 digital) with MSO 3000 Series
oscilloscopes.
Use Cl
ock on the side menu to select the clock channel.
Use Select control, Data, and Not u sed to select one
or more channels you want to monitor for setup and
hold
violations.
NOTE. Optimum Setup and Hold trigger performance is
achieved by using only analog channels or only digital
chan
nels.
Ris
e/Fall Time
Tri
gger on rise and fall times. Trigger on pulse edges
that traverse between two thresholds at faster or slower
rates than the specified time. Specify pulse edges as
pos
itive, negative, or either.
MSO3000 and DPO 3000 Series Oscilloscopes User Manual 75