Keithley 237

~toN~
~tOFF~
j,
=Output Trigger
x = Measure point
«
,
+
~toN~
'-tOFF~
«
,,
~tOFF7j
•••
SECTION2
Operation
Figure 2-54.
Pulse End
Output
Trigger
Table
2-14.
Output
Triggers
Trigger Selection
Description
NONE
OUT
No
output
triggers
SRC,DLYMSR
OUT
Output
trigger pulse after every source phase.
SRCDLY,..MSR
OUT
Output
trigger pulse after every delay phase.
SRC,..DLY,..MSR
OUT
Output
trigger pulse after every source
phase
and
delay phase.
SRCDLYMSR" OUT
Output
trigger pulse after every measure phase.
SRC,..DLY
MSR"
OUT
Output
trigger pulse after every source phase
and
measure phase.
SRC
DLY,..MSR"
OUT
Output
trigger pulse after every delay phase
and
measure phase.
SRC,..DLY,..MSR"
OUT
Output
trigger pulse after every source phase, delay phase,
and
measure phase.
PULSE
END" OUT
For pulse sweeps.
Output
trigger pulse after
end
of each off time
(toFF)
measurement
(see Figure 2-54).
Unit cannot
be
triggered to start a source, delay, measure
sequence (de
or
sweep operation). Subsequently,
output
triggers cannot occur.
units could
be
put
on
"hold" (triggers disabled)
so
that
the second
unit
could
be
temporarily
used
for a different
application.
In
another example, triggers can
be
disabled
so
that
stored
data
can be manipulated
without
the possi-
bility of a trigger starting
an
unwanted
sweep. Remem-
ber, each sweep writes over stored
data
in
the sweep
buffer.
Being able to disable triggers provides a convenient
means of putting a Source Measure
Unit
on
"hold" with-
out
having
to
change the other trigger setups. For exam-
ple, in a two Source Measure
Unit
test system, one of
the
+
2-89