Keithley SourceMeter 2611, User Manual

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Series 2600 System SourceMeters User’s Manual Frequently Asked Questions B-3
Return to In this Appendix: 2600S-900-01 Rev. A / May 2006
How do I use the Digital I/O port?
Reference Refer to Section 10 of the Series 2600 Reference Manual for com-
plete details on the Digital I/O port.
Digital I/O port terminals
The Digital I/O port, located on the rear panel ( Figure 1-2 in Section 1 ), provides
14 digital I/O lines ( Figure B-1 ). Each output can be set high (+5V) or low (0V),
read high or low logic levels, and can be set up for triggering. Make connections
using a cable with a Male DB-25 connector (Keithley Instruments part number CA-
126-1).
Figure B-1
Digital I/O
1 = Digital I/O #1
2 = Digital I/O #2
3 = Digital I/O #3
4 = Digital I/O #4
5 = Digital I/O #5
6 = Digital I/O #6
7 = Digital I/O #7
8 = Digital I/O #8
9 = Digital I/O #9
10 = Digital I/O #10
11 = Digital I/O #11
12 = Digital I/O #12
13 = Digital I/O #13
14 = Digital I/O #14
15-21 = Ground
22 = +5V
23 = +5V
24 = Output Enable (OE); 2601/2602
24 = Interlock (INT); 2611/2612
25 = +5V
1
14
13
25
DIGITAL I/O
port terminals
Controlling the Digital I/O port
From the front panel, select MENU > GENERAL > DIGOUT > DIG_IO_OUTPUT,
then enter the decimal value to set I/O lines high or low (16,383 maximum).
Commands for basic I/O are summarized in
Table B-1 . For example, to set all 14
lines high, send:
digiowriteport(16383)
.