Keithley 2450 User Manual

Section
3: Functions and features Model 2450 Interactive SourceMeter® Instrument
Reference Manual
3-20 2450-901-01 Rev. B/September 2013
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: V (Volts), A (Amps), O (Ohms)
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
2450, this will always be Main.
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
Unit
Units of measure of the source; values may be any of the following: V
(Volts), A (Amps), O (Ohms), W (Watts).
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 over temperature; F indicates that
the instrument is not in over temperature
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
Using the front panel to view the contents of a reading buffer:
1. Press the MENU key.
2. Under Views, select Sheet.
3. Next to Buffer, select the buffer you want to view. The data is displayed.
4. If you want to view the DATA SHEET window for a different buffer, select the Buffer button to
display the Select Buffer to View menu.
5. To view a specific data point, select Jump To and enter the number of the data point.
6. Press the HOME key to return to the HOME screen.

Keithley 2450 Specifications

General

Model	2450
Category	SourceMeter
Voltage Source Range	±200 V
Current Source Range	±1 A
DC Voltage	200 V
DC Current	1 A
Power Output	20 W
Resolution	6.5 digits
Display	5-inch capacitive touchscreen
Operating Temperature	0°C to 50°C
Connectivity	USB, LAN, GPIB
Dimensions	213 mm × 88 mm × 370 mm