Keithley 237 Service Manual

‚
INITIALIZE
236/237
PRINT 11, “OUTPUT
16;M32,X“
‘
236/237
SRQ
on
error,
PRINT
111 ‚
“OUTPUT
16
;
BO ‚ ‚
X“
‘
Zero
bias output
level
for safety.
PRINT
lfl,
“OUTPUT
16;OOX‘
‘
Local
sensing.
PRINT
#1,
“OUTPtJT
16;KOYOX“
‘
Enable
EOI,
hold—off,terminator,
•****k**
CHECK
CAL
LOCK SWITCH
STATUS
PRINT
#1 ‚
“OUTPUT
16
;
07X‘
‘
Request
cal ibrat i
on
status
word,
PRINT
111,
“ENTER
16“
‘
Address
236/237 to
talk.
LINE
INPUT
#2, ST$
‘
Input
cal
statue word.
IF MID$(ST$,
7,
1
) =
“i“ THEN
‘
Check
cal lock switch status.
BEEP
PRINT
“Model
236/237
Cal
Lock
switch
is
in locked position.“
PRINT
“Calibration
will be
only
temporary.“
PRINT
cl =
1
GOSUB KeyCheck
END
IF
ENABLE
BUS
SRQ
ERROR
TRAPPING
ON
PEN
GOSUB
ErrCheck
‘
Point
to
error
routine.
PEN
ON
1
Enable error
deteotion.
PRINT #1,
“ARM SRQ“ Enable
SRQ.
tk*********
HAIN PROGRAM
LOOP
ON cal
GOSUB
CalVolt,
CalHigh,
CalLow
IF
cal =
4 THEN
GOSUB
CalVolt
GOSUB
CalHigh
GOSUB
CalLow
END IF
PR 1 NT
PRINT
PRINT
PRINT
PRINT
IF
Cl =
1
THEN
PRINT “NOTE:
Calibration
is temporary.“
PR 1 NT
INPUT “Rerun
calibration
program
(y/n)“;
IN$
IN$ =
LEFT$(
IN$ ‚
1)
IF IN$
=
“y“
OR
IN$ =
“Y“ THEN
GOTO
SeiCal
PRINT
#1,
“LOCAL“
CLOSE
1:
CLOSE 2
END
6
‚
*
VOLTAGE
FUNCTION
CALI BRATION
ROUTINES
Cal
Volt:
CLS
: BEEP
#1,
“CLEAR“
Send
DCL.
msg$(cal
); “
cal ibration
procedure
completed.“
E;
“error(s)
detected
during
calibration.“
t
Restore
local
operation.
‚
Ciose
1/0
files.
9
End
of
program.

Keithley 237 Specifications

General

Brand	Keithley
Model	237
Category	Measuring Instruments
Language	English