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Table
4-3.
707464
Binarv
l/O
Interface
Instructions
BACKPLANE
CARD
ADDRESS
IS
P
ADDRESSED
INSTRUCTIONS
HP-IB
I
Instruction
I
Response
I
**0P
I
Generate backplane
reset
and
clear
error
bit
buffer
r
2 P
p u t p u t
data to
backplane
data
bus
from
I 1 0
buffer
*0?i
1
P
1
*3F
1
Load
addressed
card
with
data
via
back~lane
data
lines
I
-
I
Clear
error
bit
buffer
Generate
simultaneous
sample
command
*2F
3 P
-
254
1
Load
data
from
backplane
data
bus
into
I/O
buffer
Sends
data
and/or
error
bits
to
computer
from
I/O
buffer
4 P
-
252
3
All
Other
l
nstructions
Table
4-4.
70755A
Compensation
Interface
I
BACKPLANE
CARD
ADDRESS
IS
V
1
4
Load
Data
into
10746A
1/O
buffer
I
ADDRESSED
INSTRUCTIONS
I
251
4
-
NONADDRESSED
INSTRUCTIONS
Do
Nothing
-
-
System
Reset
Sample
-
*0P
means
CMD
0
and
any
card
address
except
P .
**For
16-bit
mode,
three
sequential
0 P
commands
are
required;
for
8-bit
mode,
five
sequential
0 P
commands
are
required.
Same
a s
0 P
instruction
Do
Nothing
HP-IB
Instruction
I
I
Output
VOL
compensation
information
to
BP
data
bus
and
start
new
measurement
I
I
I
W
I
-
All
Other
I
Handshake
immediately
and
do
nothing
I
-
I
Response
Decimal
Instruction
Initialize
state
machine
and
take
new
reading
I
Sample
I
Do
Nothing
I
*This
is
the
compensation
number for
the
last
time
a
2 V
or
0V
was
given.
Therefore,
if
a
2 V
command
is
given
every
15
minutes,
the
compensation
value
is
15
minutes
old.
159
%
Instructions
I
I
NONADDRESSED
INSTRUCTIONS
Svstem
Reset
I
Same
as
0V
-
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