Keithley 2461 Reference Manual

Section
2: General operation Model 2461 Interactive SourceMeter® Instrument
Reference Manual
2-70 2461-901-01 A/November 2015
Communicate with the instrument
For the instrument to communicate with the USB device, you must use NI-VISA
TM
. VISA requires a
resource string in the following format to connect to the correct USB instrument:
USB0::0x05e6::0x2461::[serial number]::INSTR
Where:
• 0x05e6: The Keithley vendor ID
• 0x2461: The instrument model number
• [serial number]: The serial number of the instrument (the serial number is also on the rear
panel)
• INSTR: Use the USBTMC protocol
To determine these parameters, you can run the Keithley Configuration Panel, which automatically
detects all instruments connected to the computer.
If you installed the Keithley I/O Layer, you can access the Keithley Configuration Panel through the
Microsoft
®
Windows
®
Start menu.
To use the Keithley Configuration Panel to determine the VISA resource string:
1. Click Start > All Programs > Keithley Instruments > Keithley Configuration Panel. The
Select Operation dialog box is displayed.
Figure 48: Select Operation dialog box
2. Select Add.

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