Keithley 2450 User Manual

Model 24
50 Interactive SourceMeter® Instrument Reference Manual Section 8:
TSP command reference
2450-901-01 Rev. B/September 2013 8-249
upgrade.unit()
This function upgrades the Model 2450 firmware.
Type TSP-Link accessible
Affected by Where saved Default value
Function
No
Usage
upgrade.unit()
Details
When upgrade.unit() is used, the firmware is only loaded if the version of the firmware component is newer
than the existing version. If the version is older or at the same revision level, it is not upgraded.
When you send this function, the instrument searches the flash drive that is inserted in the front-panel USB port
for an upgrade file. If the file is found, the instrument verifies that the file is a newer version. If the version is
older or at the same revision level, it is not upgraded. If it is a newer version, the instrument performs the
upgrade. An error is returned if no upgrade file is found.
Also see
Upgrading the firmware (on page A-3)
upgrade.previous() (on page 8-248)
userstring.add()
This function adds a user-defined string to nonvolatile memory.
Type TSP-Link accessible
Affected by Where saved Default value
Function
No
Usage
userstring.add(name, value)
name
The name of the string; the key of the key-value pair
value
The string to associate with
name
; the value of the key-value pair
Details
This function associates the string value with the string name and stores this key-value pair in nonvolatile
memory.
Use the userstring.get() function to retrieve the value associated with the specified name.
You can use the userstring functions to store custom, instrument-specific information in the instrument, such
as department number, asset number, or manufacturing plant location.

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