Agilent Technologies 1100 Series Manual de Serviço descarregar pdf (Página 252)

252 1100 Series DAD and MWD Reference Manual

6 Introduction to the Detector

slope of this signal (upslope, apex, downslope and baseline) and stores spectra

according to the operator’s instructions. During the run the PD-peakwidth

parameter can be changed by time-programming.

Spectra Acquisition Modes (DAD only)

The spectra acquisition mode allows automatic storage of spectra during a

run. The mode can be changed during the run by time-programming.

The modes in detail are:

Table 3 2 Spectra Acquisition Modes

Mode Description

none no spectra is stored

apex top of peak spectra is stored

apex + baselines last baseline spectrum before peak, top of peak spectrum and first

baseline spectrum after peak is stored.

apex + slopes spectrum in peak upslope, at top of peak and in peak downslope is

stored.

apex + slopes + baselines combined apex + slopes and apex + baselines.

all in peak compared to storing all spectra periodically, only stores spectra

within a peak at doubled period. Starts with last baseline spectrum

before peak and ends with first baseline spectrum after peak. If

baseline spectra are not detected, the spectrum before the first

spectrum in peak or the spectrum after the last spectrum within the

peak is stored instead.

all 2nd in peak only the 2nd spectra of a peak is stored.

all periodically all spectra are stored. The period depends on the

peakwidth setting. For peakwidth setting=0 (narrowest peak), the

spectrum data rate would be 20 Hz.

all second periodically every 2nd spectra is stored (50 % of mode all).

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Agilent Technologies 1100 Series Manual de Serviço Página 252