Keithley SourceMeter 2600 Series Reference Manual page 253

Series 2600 System SourceMeters Reference Manual
Figure 10-2
Digital I/O port configuration
(on DIGITAL I/O connector)
DIGITAL I/O pin
(on DIGITAL I/O connector)
GND pin
(on DIGITAL I/O connector)
Controlling digital I/O lines
Although the digital I/O lines are primarily intended for use with a device handler
for limit testing, they can also be used for other purposes such as controlling
external logic circuits. You can control lines either from the front panel or via
remote as follows.
DIGITAL I/O INTERFACE (All Series 2600 Models):
Connector: 25-pin female D
Input/Output pins: 14 open-drain I/O bits
Absolute maximum input voltage: 5.25V
Absolute minimum input voltage: -0.25V
Maximum logic low input voltage: 0.7V @ +850mA
Minimum logic high input voltage: 2.1V @ +570mA
Maximum source current (flowing out of digital I/O bit): +960mA
Absolute Maximum sink current (flowing into digital I/O bit): -11.0A
Maximum Sink Current @ Maximum Logic Low Voltage (0.7V): -5.0mA.
600mA solid state
+5V pin
fuse
100W
Rear panel
Return to
5.1kW
Section 10 topics 2600S-901-01 Rev. A / May 2006
Digital I/O Port 10-5
+5VD
Read by firmware
Written by firmware