Keithley 2601 Reference Manual page 229

Series 2600 System SourceMeter® Instruments Reference Manual
Digital I/O bit weighting
Bit weighting for the digital I/O lines is shown in
Table 10-1
Digital I/O bit weighting
Line #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Setting digital I/O values
To set digital I/O values:
1. Press the MENU > DIGOUT, and then press ENTER or push in the navigation wheel.
2. Select DIG-IO-OUTPUT, and then press ENTER of the navigation wheel.
3. Set the decimal value as required to set digital I/O line(s) within the range of 0 to 16,383
(see
4. Press EXIT as needed to return to the normal display.
Write protecting digital I/O lines
You can also write protect specific digital I/O lines to prevent their values from being changed:
1. Press MENU > DIGOUT and then press ENTER or the navigation wheel.
2. Select WRITE-PROTECT, then press ENTER or the navigation wheel.
3. Set the decimal value as required to write protect digital I/O line(s) within the range of 0 to
16,383 (see
4. Press EXIT as needed to return to the normal display.
5. To remove write protection, simply repeat the above procedure, entering the same value.
Remote digital I/O commands
Commands that control and access the digital I/O port are summarized in
Section 12
values used to control and access the digital I/O port and individual lines.
2600S-901-01 Rev. C / January 2008
Decimal
Bit weighting
B1 1
B2 2
B3 4
B4 8
B5 16
B6 32
B7 64
B8 128
B9 256
B10 512
B11 1024
B12 2048
B13 4096
B14 8192
Table 10-1), then press ENTER or the navigation wheel.
Table 10-1), then press ENTER or the navigation wheel.
for complete details on these commands. See
Return to Section Topics
Table 10-1.
Hexadecimal
weighting
0x0001
0x0002
0x0004
0x0008
0x0010
0x0020
0x0040
0x0080
0x0100
0x0200
0x0400
0x0800
0x1000
0x2000
Table 10-1
Section 10: Digital I/O and Triggering
Table 10-2. See
for decimal and hexadecimal
10-5