Metrohm Vision – Diagnostics - Manual (Page 63)

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16.5 Photometric Linearity Setup
In order to run the USP Photometric Linearity Test the USP Photometric Linearity Setup must be done
to create the initial readings for a set of photometric standards on a given analyzer (module and
monochromator combination). The setup provides a method to record the initial instrument response
to calibrated photometric reflectance standards. It is usually performed upon initial instrument
installation.
When the standards are scanned during Photometric Linearity Setup, a file is generated and stored in
the Vision\DiagDB directory. This file has the format RUSPxxxx.DA. This indicates that it is a file used
for the USP tests, and is related to a set of standards containing the digits given in the filename. If the
user has multiple modules a separate setup must be done for each module. It is recommended that
the user create the first file, and then go to the Windows Explorer and modify the filename to include
a designator for the module. For example for the RCA module the file may be renamed to
RUSP10350RCA.DA. The setup can then be done for the next module, and a file RUSPxxxx.DA will
again be generated, and can be renamed to include information on the module for which it is to be
used.
During the Photometric Linearity Setup Vision requests a “Standard File”. This file is provided on the
floppy diskette or CD-ROM packed with the standards set. Insert the diskette into the drive and select
the RSSxxxxx.da file in the dialog box. The user will then be prompted to introduce the standards
sequentially.
16.6 Show USP Test Results
The USP Test Results are stored in the Diagnostic
Database and can be recalled by choosing the
menu option Show USP Test Results.
This box will appear, with each test result stored
with filename giving the data and time of the
test, along with the test type. The file name
format is “YYYYMMDDHHHHtest.vts”.