6.5.1 Embedded Curve Handler™
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6.5.1 Embedded
Curve Handler™
The Embedded Curve Handler™ utility is provided for uploading temperature curve
files to the Model 372. The utility is also capable of reading curves from the
Model 372 and writing them to a file for storage, or manipulation in a third party pro-
gram. The Embedded Curve Handler™ supports standard Lake Shore temperature
curve files in the “.340” file format, and the Microsoft Excel® ".xls" (Excel® 97 through
2003) file format. Curve files are provided with calibrated sensors purchased from
Lake Shore in the “.340” file format. The “.CURVE” file format, which is the format of
cubic spline curves, is not supported.
To read a temperature curve from a file:
click
Read from File
. Select a properly formatted
temperature curve (*.340 or *.xls) file using the Open Browser dialog box. The curve
will be loaded into the program and the curve points and graph will be displayed.
To read a temperature curve from the Model 372:
click
Read from Instrument
. The Read
Curve from Instrument dialog box appears. Select a curve from the drop-down box
and click
OK
. The curve will be loaded into the program and the curve points and
graph will be displayed.
Once a curve is loaded into the Embedded Curve Handler™ using either the Read
from File or Read from Instrument buttons, the loaded curve can be stored either to a
user curve location (21 to 59) in the Model 372, or to a file.
To store the curve to a user curve location in the Model 372:
click
Write to Instrument.
The
Write Curve to Instrument dialog box appears. Select a user curve location to write
the loaded temperature curve to, and click
OK
.
To write the currently loaded curve to a file:
click
Write to File
. A Save Browser dialog box
appears. First use the Files of Type drop-down box to select the file format in which to
save the curve. Then choose a directory and a file name, and click
Save
.
The .340 file format is an ASCII text file which can be read and altered using a stan-
dard ASCII text editor. Care must be taken when altering the .340 text files to ensure
that all of the values are stored in the same position in the file as the original values,
using the same number of digits. To alter curve files, it is recommended to use the .xls
file format, which can be altered using Microsoft Excel®. If using formulas to alter
curves, you must copy the results of the formulas and paste them back into the origi-
nal cells of the breakpoint values. The Embedded Curve Handler™ cannot interpret
formulas in cells. In most versions of Excel®, this can be done by copying the formula
results, then pasting them in the appropriate cells using the
Paste Special
command,
and selecting
Paste Values
. Refer to the appropriate Microsoft Excel® documentation
for details on the Paste Special operation.
The Embedded Curve Handler™ cannot read files in the Microsoft Excel® ".xls" (Excel®
2007 or newer) format. When saving files from Excel®, be sure to save them in the ".xls"
(Excel® 97 through 2003) format so that the file can be read using the
Embedded Curve Handler™ utility.