Keithley 2601B Reference Manual page 846

Series 2600B System SourceMeter® Instrument Reference Manual
Digital I/O mapping
The Models 2604B, 2614B, and 2634B do not have digital input/output lines.
When in Model 2400 emulation mode, digital I/O lines 1 through 9 are used to emulate different
Model 2400 lines through the digital I/O port (see
shows the mapping.
Model 2400 line
TLink1
TLink2
TLink3
TLink4
Digital output 1
Digital output 2
Digital output 3
Digital output 4 (or EOT, /EOT, BUSY, /BUSY)
SOT
Ground
+5 V
+5 V
Output enable (OE) or Interlock (INT)**
+5 V
* Same as Series 2600B.
** See Port configuration
2600BS-901-01 Rev. B / May 2013
DB-25 connector pin
1
2
3
4
5
6
7
8
9
15-21*
22*
23*
24*
25*
(on page 3-83) for information on pin 24.
Appendix G: Model 2400 emulation
Digital I/O port (on page 3-83)). The following table
G-5