Keithley 237

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SECTION3
IEEE-488
Reference
a.s.21
W - Default Delay
Purpose
Format
Parameters
Default
Description
Programming
Notes
Programming
Example
To
enable/
disable the default delay of the source-delay-measure cycle.
Wn
wo
W1
Disable default delay
Enable default delay
Upon
power-up,
or
afterreceiving a DCL
or
SOC
command, the instrument defaults
to the last programmed selection. A
JOX
command sets the instrument to
W1
(default
delay enabled).
TheW
command controls the
enabling/
disabling
of
a fixed delay used to compen-
sate for the instrument settling time
when
measuring resistive loads.
See
Figure 3-26.
Do
not confuse
this
delay with
the
de delay
that
is programmed with the B com-
mand,
or
the sweep delay
that
is programmed with the A
and
Q
commands.
When
W1
is sent over the bus, the default delay, which is !-range dependent, is effec-
tively
added
to the specified
de
or
sweep delay.
1.
Default delay values are listed
in
the discussion of timing considerations (para-
graph3.7).
2.
When measure autoranging is used, the default delays are
used
whether they are
enabled
or
not with
theW
command.
3.
The warning condition for
theW
command is discussed
in
the
U9
warning status
word
(see paragraph 3.6.19).
10
20
OUTPUT
716;
"W1X"
OUTPUT
716;
"WOX"
+
!
Enable default delay.
!
Disable default delay.
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