Technical data

Understanding Your Agilent ChemStation 265
System Verification
12
DAD Test Function
DAD Test Function
Detector tests can be used as a step in the routine system validation of an
analytical instrument in a regulated laboratory.
The DAD test assesses the performance of your diode array detector. When
you select the DAD test from the Instrument menu (for LC3D and CE only) it
checks the instrument for intensity and wavelength calibration. When you
press Save the test results are automatically saved to the DADTest database, a
register file called DADTest.Reg located in the default instrument directory.
Review DAD Test Function
The Review DAD Test function in the data analysis View menu enables you to
review the DADTest.Reg file at any time. The file is protected by a checksum,
and is encoded into binary to ensure that it is not changed.
You can select any of the following parts of the DAD test for review:
Show Holmium
Spectra
Plots all Holmium spectra listed in the DAD Test review table. The active
spectrum is tagged.
Show Intensity
Spectra
Plots all intensity spectra listed in the DAD Test review table. The active
spectrum is tagged.
Save as New
Database
If you change the lamp in your DAD you can reset the DADTest by deleting any
unwanted test results from the table and then using the Save as New Database
function.
Show Selected
Spectra
Displays only spectra you selected in the table.
Show Intensity
Graph
You can plot an intensity graph to give an indication of the life of the lamp in
your diode array detector. The graph provides a function of maximum lamp
intensity against time.