Keithley 2461 Reference Manual

Model 2461
Interactive SourceMeter® Instrument Reference Manual Section 3:
Functions and features
2461-901-01 A/November 2015 3-87
Digital I/O port configuration
The following figure shows the basic configuration of the digital I/O port.
To set a line high (nominally +5 V), write a 1 to it; to set a line low (nominally 0 V), write a 0 to it. To
allow an external device to control the state of the line, the line must be set to input mode or
open-drain mode. An attached device must be able to sink at least 50 µA from each I/O line.
Figure 131: Digital I/O port configuration
For additional details about the digital output, see the Model 2461 specifications (available at the
Keithley Instruments support website (http://www.keithley.com/support)).

Keithley 2461 Specifications

General

Maximum Current	7 A
Power	100 W
Resolution	6.5 digits
Source Measure Unit (SMU)	Yes
DC Voltage	100 V
Maximum Voltage	100 V
Display	5-inch capacitive touchscreen
Connectivity	USB, GPIB
Software	TSP
DC Current	7 A
Current Source Range	0 to 7 A
Voltage Measurement Range	100 mV to 100 V
Current Measurement Range	10 nA to 7 A
Voltage Measurement Resolution	100 nV