Keithley 2461 Reference Manual

Model 2461
Interactive SourceMeter® Instrument Reference Manual Section 2:
General operation
2461-901-01 A/November 2015 2-103
Source current and make measurements
When the Model 2461 is sourcing current, you can make current, voltage, resistance, or power
measurements.
Using the front panel:
1. Connect the device under test (DUT) as described in Test connections (on page 2-83).
2. Set the function for your measurement. Press FUNCTION. Under Source Current and Measure,
select the type of measurement you want to make.
3. Select the source current range. Under SOURCE I on the Home screen, select the button next to
Range. Select the appropriate setting.
4. Set the source current level. Under SOURCE I on the Home screen, select the number next to
Source. Use the displayed number pad to set the value. Select OK.
5. Set voltage limits for the source. Under SOURCE I on the Home screen, select the number next
to Limit. Set an appropriate value.
6. Select the measurement range. In the MEASURE area of the Home screen, select the button
next to Range and choose an appropriate range.
7. Turn on the output by pressing the OUTPUT ON/OFF switch. The OUTPUT indicator light turns
on.
8. Hold the TRIGGER key for three seconds to change the measurement method. Select one of the
following options:
 Continuous Measurement: The instrument makes continuous measurements.
 Manual Trigger Mode: The instrument makes measurements when you press the TRIGGER
key.
9. Observe the readings.
10. When you are finished, turn the output off by pressing the OUTPUT ON/OFF switch. The
OUTPUT indicator light turns off.
Source values
When you edit the source value, the source is updated immediately. This allows you to adjust the
source value while the output is on.
In certain situations, you cannot change the source value immediately. These situations include:
• While the instrument is performing a sweep
• If offset compensation is enabled (ohms measurements only)
• If the Quick Setup Ohmmeter option is enabled

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