Axis BTA 2100D Manual do Operador descarregar pdf (Página 297)

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Data Acquisition Window

The Data Acquisition window contains instructions for collecting a baseline noise

sample (Noise Monitor) and for selecting the full scale for the FID and TSD

detectors. The Varian MS Workstation will sample the baseline noise on the first

derivative of the detector signal before each run. This sample is used to estimate

the baseline noise. The estimate is more accurate as the sample size is

increased, but the sample takes longer to acquire.

The Varian MS Workstation will set the full scale for the detector signal as

specified here. 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.

The 3800’s 40 Hz data rate can be reduced by bunching. Enter the bunch size

here. The resulting bunched data rate is shown to the right.

Enter the size of the noise sample as the number of bunched data points.

Select the full scale signal setting for the FID and TSD detectors.

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