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IEEE-488 Programming
5.9.23
V
—
Make/break
Purpose
Format
Parameters
Description
Programming
notes
Example
5.9.24
W —
Break/make
Purpose
Format
Parameters
Description
Programming
notes
To
select
rows
for
make/break
operation.
Vabcdefgh
abcdefgh=
00000000
All
rows
de-selected
for
make/break
to
1
mill
1
All
rows
selected
for
make/break
The
V
command
selects
individual
rows
for
make/break (make-before-break)
operation.
A
"1"
in
the respective
row
field
selects
make/break;
a
"0"
de-selects
make/break
operation.
1.
Specifying fewer than
eight
numbers
in
the
parameter
field
(e.g.,
Villi)
is
invalid.
The
Model
707A
takes
no
action
on
the
rows and
flags
an
IDDCO
error.
2.
The
rows can
be
programmed
for
one
of
three
switching
options:
make/break, break/make,
or
don't care.
A
row
cannot
be selected
for
both
make/break and break/make
at
the
same
time.
Selecting
it
for
one
de-selects
it
for the
other.
3.
When
switching current
sources,
use
make/break
operation
to
keep
current
flowing
and
elim-
inate
switching
transients.
When
switching
voltage sources,
use
break/make
operation
to
avoid
momentary
shorting
of
two
paths
together.
4.
Given
the present
states
and
actions
performed,
the
next
states
of
the
rows
are
listed
below:
Present
state
Action
Next
state
Don't Care
Select
Make/Break
De-select
Make/Break
Make/Break
Select
Make/Break
De-select
Make/Break
Break/Make
Select
Make/Break
De-select
Make/Break
Make/Break
Don't
Care
Make/Break
Don't
Care
Make/Break
Break/Make
PRINT
#1,
"OUTPOT 18;V11110000X
PRIlSiT
#1,
"OUTPOT 18;V00000000X
'
Select
rows
ABCD
for
make/break
'
Restore
default
condition
To
select
rows
for
make/break
operation.
Wabcdefgh
abcdefgh=
00000000
All
rows
de-se!ected
for
break/make
to
1
1
1
1
1 1
1
1
All
rows
selected
for
break/make
The
W
command
selects
individual
rows
for
break/make
(break-before-make)
operation.
A
^'1"
in
the respective
row
field
selects
break/make;
a
"0"
de-seiects
break/make
operation.
1.
Specifying fewer than
eight
numbers
in
the
parameter
field
(e.g.,
Wllll)
is
invalid.
The
Model
707
A
takes
no
action
on
the
rows and
flags
an
IDDCO
error.
5-39
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