Keithley 6482 - Page 320

6482-901-01 Rev. A / August 2012 Return to Section Topics C-11
Model 6482 Dual-Channel Picoammeter / Voltage Source Reference Manual Appendix C: IEEE-488 Bus Overview
Table C-4 gives a typical common command sequence. In this instance, ATN is true while the
instrument is being addressed, but it is set high while sending the common command string.
Table C-3
Typical addressed multiline command sequence
Step Command ATN state
Data bus
ASCII Hex Decimal
1
2
3
4
UNL
LAG*
SDC
Set low
Stays low
Stays low
Returns high
?
9
EOT
3F
39
04
63
57
4
*Assumes primary address = 25.
Table C-4
Typical addressed common command sequence
Step Command ATN state
Data bus
ASCII Hex Decimal
1
2
3
4
5
6
UNL
LAG*
Data
Data
Data
Data
Set low
Stays low
Set high
Stays high
Stays high
Stays high
?
9
*
R
S
T
3F
39
2A
52
53
54
63
57
42
82
83
84
*Assumes primary address = 25.