able
dwell
time
be inserted to
allow
the
recorder to
return
to
its
starting
point. The pro-
gram
may
then
look as
follows
:
0:
dsp
"set
front
panel controls on
1617";
wait
2000
1:
dev
"
1617",703
2:
dim
AS[5]
3:
ent
"Input
codes",
AS
4: lei
"1617"
5:
rem
"
1617"
6:
wait
2000
7:
wtb"1617",AS
8:
jmp-5
9:
end
Provided
that
the
front
panel FILTER CONTROL MODE
switch
is in its
"Manual"
posi-
tion,
any
currently
occurring recording
will
be reset before a
new
data
string
is
entered
.
The
dwell
time
of 2 seconds (line
5)
is
sufficient
for
an X-V recorder to
return
to
the
ori-
gin
. For a B & K Level Recorder,
the
dwell
time
necessary
will
depend on
the
selected
paper speed. If
the
front
panel
switch
on
the
Type
1617
is in its
"Recorder
" position,
the
currently
occurring recording
will
not
be
interrupted,
so
the
data
string
will
be
trans-
mitted
to
the
Type
1617,
when
the
recording is
finished.
To
conduct
a Parallel Poll , set
the
following
:
0 :
dsp "Response on overload";
wait
1000
1: pol (7) - A
2:
if
bit
(7
, A); beep; dsp ,,
**
*
**
Overload has
occurred";
wait
1000
3:
jmp-3
4: end
When
an overload has occurred since
the
last execution
of
line
2,
the
HP-9825A
will
give a beep, and
then
display
that
Overload has occurred.
Bit
7 refers to PPR8 selected on
the
rear panel
of
the
Type
1617
.
If
PPR5 had been
chosen
for
example,
it
would
mean
Bit
4,
and so on.
3.6.3.
Programming
for
operation
with
the
Tektronix
4051
36
The
following
section gives some simple examples
for,
when
the
Type
1617
is operated
together
with
a Tektronix
4051
Desk-Top Calculator. Connection to
the
4051
is made
via
its
GP-IB (General Purpose Interface Bus), using a cable
AO
0157.
Provided
that
the
listen
address
mentioned
in section
3.5.2
is used,
the
Type
1617
can be
programmed
using
the
instruction
PRINT @ 3.
To set
all
front
panel controls, proceed as
follows
:
100
PRINT "INPUT CODES (5 DIGITS):
";
110
INPUT A
120
PRINT @ 3: USING
130
: A
130
IMAGE 5D, S
140
GO
TO
100
150
END
The
digits
are entered to the Tektronix
4051
via its keyboard (see codes
in
section
3 .5 .3),
which
transfers
them
to
the
Type
1617,
and
then
returns
to
await
the
next
input
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