SIIG 1-Port ECP Spécifications télécharger pdf (Page 30)

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Photo Diode Array - Application Note

StellarNet spectrometers (EPP2000, EPP2000C, and ISA2000 models) equipped with a Toshiba

PDA (Photo Diode Array) operate differently in the XTiming resolution modes, which can be selected

from the Setup menu.

Low resolution (fastest) - provides two spectral traces in a single display. The software will not

display the correct wavelength axis, even if you have entered the correct coefficients (identified on

the bottom of each unit) into the Setup menu -> Unit calibration selection.

If you would like to use the low resolution mode, a work around is to enter the first coefficient divided

by 2 and the second by 4. The wavelength axis will then be correct for the first spectral trace, and

you can zoom only the first trace. The main advatages for doing this is to prevent the reference

from saturating without using neutral density filters, and perhaps the speed for data acquisition

where only the first half need be read. This technique is used in process applications where 5 units

are read simultaneously and time is of the essence.

Medium and High resolution settings otherwise operate normally.

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SIIG 1-Port ECP Spécifications Page 30