Fs.chdir() - Keithley 2651A Reference Manual

High power system sourcemeter instrument
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Section 7: Command reference
Usage
value = format.data
format.data = value
value
Details
The precision of numeric values can be controlled with the format.asciiprecision attribute. The byte order
of format.SREAL, format.REAL, format.REAL32, and format.REAL64 can be selected with the
format.byteorder attribute.
REAL32 and SREAL select the same single precision format. REAL and REAL64 select the same double
precision format. They are alternative identifiers. Selecting which to use is a matter of preference.
The IEEE Std 754 binary formats use four bytes each for single-precision values and eight bytes each 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.
Binary formats are not intended to be interpreted by humans.
Example
format.asciiprecision = 10
x = 3.14159265
format.data = format.ASCII
printnumber(x)
format.data = format.REAL64
printnumber(x)
Also see
format.asciiprecision
format.byteorder
printbuffer()
(on page 7-145)
printnumber()

fs.chdir()

This function sets the current working directory.
Type
TSP-Link accessible
Function
Yes
7-88
Model 2651A High Power System SourceMeter® Instrument Reference Manual
The format to use for data, set to one of the following values:
ASCII format: 1 or format.ASCII
Single-precision IEEE Std 754 binary format: 2, format.SREAL, or format.REAL32
Double-precision IEEE Std 754 binary format: 3, format.REAL, format.REAL64, or
format.DREAL
(on page 7-86)
(on page 7-87)
(on page 7-146)
Affected by
NOTE
Output:
3.141592650e+00
#0ñÔÈSû!
Where saved
Default value
@
2651A-901-01 Rev. A / March 2011

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