Axis BTA 2100D Manual do Operador descarregar pdf (Página 268)

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3800 GC Data Acquisition

Item Description

Detector Bunch Rate Powers of 2 from 1 to 128 points.

Sets the detector bunch rate in numbers of points;

shows the resulting frequency in Hz. With increased

bunch rates, less disk space is required for storing the

data. With decreased rates, more data is collected.

Bunch rate should be set appropriately for the

narrowest peak of interest in your chromatogram.

Monitor Length 16 to 128 bunched points.

Sets the number of points collected during the

monitoring period, shows the resulting time in seconds.

Used to set the number of data points used to calculate

the baseline noise. Generally, a larger value entered

here will yield a lower noise calculation.

FID/TSD Detector Full

Scale

(Font, Middle, Rear)

1V, 10V, 100V, 1000V.

Specifies the maximum detector value that will be

processed by the Varian MS Workstation. The dynamic

range of the FID and TSD detectors are equivalent to

1000V full scale, but if your peaks of interest fall

significantly below this value, you may wish to limit the

full scale value here. Since the attenuation setting used

by the Standard Report application to scale the

chromatogram printout is based on the detector's full

scale value, a lower full scale value will allow you to

scale smaller peaks with greater resolution.

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