Keithley 617 User Manual

V% =l:CALL IBSRE(BRDO%.V%) (return)
CMD$=“R3X”:CALL IBWRT(M617%,CMD5) (return)
When the return key is pressed the second time, the instru-
ment cancels the autorange mode and switches to the R3
Et”ge.
3.10.4 Zero Correct and Zero Check (2 and C)
The zero correct and zero check commands work together to
cancel any internal offsets that might upset accuracy. If the
instrument is placed in the zero correct mode with zero check
enabled, it will store a new offset value to be used for subse-
quent readings. If the instrument is zero corrected with zero
check disabled, the previously stored zero value will be used
instead, Note that the specifications at the front of this
manual assume that the instrument has been properly zeroed.
Zero correct and zero check commands include:
CO = Zero check off
Cl = Zero check on
ZO=Zero correct off
Zl = zero correct on
The instrument will be ready on reading done (zero correct)
or when the front end is set up (zero check). Upon power up,
or after receiving a DCL or SDC command, the unit will be in
the Cl and ZO modes (zero check on and zero correct off).
Use the following procedure to zero the instrument:
1. With zero correct off, place the instrument in zero check by
sending ClX.
2. Zero correct the instrument by sending ZlX.
3. Disable zero check by sending COX. Readings can then be
taken in the usual manner.
HP-85 Programming Example-Enter the following lines
into the HP-85 computer:
REMOTE 727 (END LINE)
OUTPUT 727;“ClXZlXCOX” (END LINE)
When END LINE is pressed the second time, the instrument is
first placed in zero check, the unit is zero corrected, and the
zero check mode is then disabled.
Model 8573 Programming Example-Enter the following
statements into the IBM computer:
V% =l:CALL IBSRE(BRDO%,V%) (return)
CMD$=“ClXZlXCOX”:CALL IBWRT(M617%,CMD$)
(return)
The zero check and zero correct sequence will be performed
when the return key is pressed the second time.
Table 3-12. Range Command Summary
r
T-
Command
RO
Rl
R2
R3
R4
R5
R6
R7
R8
R9
RlO
Rll
R12
Volts
Auto
200mV
2 v
20 v
200 v
200 v
200 v
200 v
200 v
200 v
200 v
200 v
:ancel Auto
Amps
Auto
2 PA
20 pA
200 pA
2 nA
20 nA
200 nA
2 PA
20 fi
200 pA
2mA
20mA
Cancel Auto
Range
Ohms
Auto
2 kG
20 kC
200 kR
2MC
20MR
200MC
2GR
20GR
200GQ
200GO
200GO
Cancel Auto
-
Coulombs
Auto
2oopc
2nC
20nC
20nC
20nC
20nC
20nC
20nC
20nC
20nC
20nC
Cancel Auto
T
External
Feedback
Auto
200mV
2v
20 v
20 v
20 v
20 v
20 v
20 v
20 v
20 v
20 v
Cancel Auto
V/I’
Ohms
Auto
200Tt-l
20TR
2TC
200GR
20GQ
2GC
200MR
20Mt-l
2Mtl
200 kR
200 kR
Cancel Auto
1
*Full range value based on 100V/10,000 displayed counts of current.
3-21

Keithley 617 Specifications

General

Brand	Keithley
Model	617
Category	Measuring Instruments
Language	English