Keithley 2461 Reference Manual

Section
3: Functions and features Model 2461 Interactive SourceMeter® Instrument
Reference Manual
3-18 2461-901-01 A/November 2015
Heading Description
Index
Provides an identifier for each reading
Reading
Measured value for each reading
Unit Indicates the unit of measure for the reading; values may be any of the
following:
Volt
,
Amp
,
Ohm
, or
Watt
Range Digits Positive full-scale value of the measurement range that the instrument is
presently using; values may be any of the following:
".000000001", ".00000001", ".0000001", ".000001",
".00001", ".0001", ".001", ".01", ".1", "1",
"10", "100", "1000", "10000", "100000", "1000000",
"10000000", "100000000", "1000000000",
"10000000000", "100000000000"
Disp Digits
The number of digits that are displayed for measurements on the front
panel. Values may be 3.5, 4.5, 5.5, or 6.5
Math
T when Math is ON; F when Math is off
Limit1 High
Specifies that the upper limit for limit 1 has been exceeded
Limit1 Low
Specifies that the lower limit for limit 1 has been exceeded
Limit2 High
Specifies that the upper limit for limit 2 has been exceeded
Limit2 Low
Specifies that the lower limit for limit 2 has been exceeded
Terminal Specifies which set of input and output terminals the instrument was
using when the measurements were made; values may be any of the
following:
Front
or
Rear
Questionable
T or F
Origin
The A/D converter from which the reading originated; for the Model
2461, this will be Main for measure functions or Digitizer for digitize
functions.
Value
Value is the source value when the reading was taken; if readback is
ON, it is the measured source value; otherwise, it is the programmed
value
Digits
Source digits
Unit
Units of measure of the source; values may be any of the following:
Volt
,
Amp
,
Ohm
, or
Watt
Output
On
or
Off
Sense
2W
or
4W
Source Limit
T indicates that the source limit was exceeded; F indicates that the
source limit was not exceeded
Overtemp
T indicates that the instrument is in an overtemperature state; F indicates
that the instrument is not in an overtemperature state
Date
Date the readings were made
Time
Time the readings were made
Fractional Seconds
Fractional portion of the timestamp (in seconds) when each reading was
made; fractional seconds are the fractional part of an absolute
timestamp, for example, the fractional part of the 11:11:23.45678
timestamp is .45678

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