Keithley 2461 Reference Manual

Section
2: General operation Model 2461 Interactive SourceMeter® Instrument
Reference Manual
2-12 2461-901-01 A/November 2015
To adjust the backlight using TSP commands:
Send the following command:
display.lightstate = brightness
Where brightness is one of the following options:
• Full brightness: display.STATE_LCD_100
• 75 % brightness: display.STATE_LCD_75
• 50 % brightness: display.STATE_LCD_50
• 25 % brightness: display.STATE_LCD_25
• Display off: display.STATE_LCD_OFF
• Display, key lights, and all indicators off: display.STATE_BLACKOUT
Event messages
During operation and programming, front-panel messages may be briefly displayed. Messages are
information, warning, or error notifications. For information on event messages, refer to Using the
event log (on page 2-142).
Figure 6: Example front-panel error message

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