Keithley 2450 User Manual

Section
8: TSP command reference Model 2450 Interactive SourceMeter® Instrument
Reference Manual
8-64 2450-901-01 Rev. B/September 2013
format.data
This attribute sets the data format for data that is printed using the printnumber() and printbuffer()
functions.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW)
No
Restore configuration
Instrument reset
Power cycle
Configuration script
format.ASCII
Usage
value = format.data
format.data = value
value
The format to use for data, set to one of the following values:
• ASCII format: format.ASCII
• Single-precision IEEE Std 754 binary format: format.REAL32
• Double-precision IEEE Std 754 binary format:
format.REAL64
Details
You can control the precision of numeric values with the format.asciiprecision attribute. If
format.REAL32 or format.REAL64 is selected, you can select the byte order with the format.byteorder
attribute.
The IEEE Std 754 binary formats use four bytes for single-precision values and eight bytes for double-precision
values.
When data is written with any of the binary formats, the response message starts with “#0” and ends with a new
line. When data is written with the ASCII format, elements are separated with a comma and space.
Example
format.asciiprecision = 10
x = 3.14159265
format.data = format.ASCII
printnumber(x)
format.data = format.REAL64
printnumber(x)
Output a number represented by x in ASCII
using a precision of 10, then output the
same number in binary using double
precision format.
Output:
3.141592650e+00
#0ñÔÈSû! @
Also see
format.asciiprecision (on page 8-62)
format.byteorder (on page 8-63)
printbuffer() (on page 8-78)
printnumber() (on page 8-81)

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