Datron 1061 - Autocalover

11
1.8
'AUTOCAL'
OVER
THE
BUS
All
the
cal¡bration
procedures
covered
in
this
manual
can
be
carried
out
remotely
using Option
50,
the
IEEE
Bus.
Effectively,
the
five
calibration
keys
are
replaced
by five
Bus
instructions
and
these
are
used
instead
of
the
'CALIBRATE'
keys
listed
in the
Calibratíon
tables
on
previous
pages.
An
example
of
calibration
with
the
Bus
is
given in
the table
below.
A complete
program listing
for
the
same
calibration
operation
assuming
an
HP9825
controller
is as
follows:-
Ø:
dirn
DSt15l
1
:
clr 728
2:
wrl 728,"F3R3OlWl="
3:
Ø+S
4:
wrt 728,"GØ="
define
1 5
character
stríng
variable
send
'device
ciear'to
DVM
(interface
7,
address
28)
program
to
DC lV,
SRO
Mode
1,
Enable
Cal.
5: oni
7,"srq"
6:
eir 7,128
7: if bir
("ø1xxxxxx".s)
=@;jmp
-1
8: dsp
"Apply
1V
&
CONTINUE"
g:
0->S;stp
10:
wrt 728,"G1="
1 1: oni
7,"srq"
12: eir 7
,128
13: if bit
("ø1XXXXXX",S)
=@;jmp
-1
14: wrt 728,"føWø="
15:
lcl72B
i 6: stp
17:
"srq":rds(728)+S
jump
to
SRO
service
routine
on interrupt
enable
SRQ
interrupts
from
interface
7
check
status
byte S
obtained by
service
routíne
prompt
operator
to
aPPIY
calibration source
on
com-
pleting
zero cal
program
gain
cal. trigger
program
to lnternal
Trigger,
Disable Cal. on
completion
of
gain
cal.
program
DVM
to local
state
SRO service
routíne to read
status byte
program
zero
cal.
trigger
18:
red 728,D$
19:
iret
*7717
CAL¡BRATION.
EXAMPLE USING
THE
BUS
Remarks
Program DVM to
predetermined
state
AøCøDXEøF3MøNø
oøPøoøR65øT5
Program DVM to
Function:DC V(F3l
Range:lV
(R3)
SRO
Mode 1
(O1)
Enable Cal.
(W1)
Program
'Zero'
cal.,
SRO
indicates when
calibration operation
completed
Program
'Gain'cal.,
SRO
indícates when
calibration
operatíon
completed
Program DVM to
lnternal Trigger
(T0),
Disable Cal.
(WØ)
DVM
in
normal
mode,
free-running
DVM Reading
After
Calibration
È.00000v
+1.00000v
Bus
Controller
I nstruction
'Device
Clear'
'F3R301W1=',
,GøJ
'G1=',
'TØWØ='
'Local'
DVM
Setting
ln
Remote
State
Calibration
key to'CAL'
ln
Remote
State
ln
Remote
State
ln
Remote
State
ln
Local
State,
Calibration
key
tO,RUN'
Calibration
Source
+0.00000v
+0.00000v
+1.00000v
Calibration
Operation
Set
DVM
to
known
state
Set
DVM
to
DCV,
1V
Range,
and
prepare
for
calibration
1V
Range
Zero
1V
Positive
Full
Range
Set
DVM
to
I
nte
rnal
Trigger,
Disable
Cal.
Step
1
2
3
4
5
6
:i
;,
1-;':.