BUCHI NIRWare - Manual (Page 174)

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
NIRWare Suite NIRWare 1.5 Software Manual
Determination
Definition of the gain determination procedure:

Manual: The gain specified in 'Gain of ADC Detector for samples' is
used for all sample measurements.

Optimized: The optimum gain is determined when the application is
run for the first time by analysing one or more samples.

Auto: The optimum gain is determined automatically for each sample
before the measurement.
Determine best gain
before the next
measurement
(Optimized) Setting for NIRFlex Solids Transmittance.
This function is combined with the gain determination setting "Optimized".
When it is activated, the amount of samples defined in the line "Number of
samples used for optimized gain determination" is scanned prior to each
measuring cycle and the resulting average gain is used for the samples
measured in the cycle.
Sample intensity
scatter limit Setting for NIRFlex Solids Transmittance.
The scatter limit is defined between 0.1 and 1 (default is 0.8) and ensures
that the detector is not oversaturated.
Number of samples
used for optimized gain
determination Setting for NIRFlex Solids Transmittance.
The number defned in this field is used for the Gain Determination
eOptimized (see above).
Default: 1
* non bold parameters are advanced parameters.
Apodisation function
Function
ID
Function
1 Hamming (Hape-Genzel)
2 Hanning (cosine)
3 Blackman-Harris
4 Blackman-Harris 4Term
5 Bartlet (triangle)
6 Blackman
7 Blackman exact
8 Forman
6.2.10. Measurement cell specific settings
Solids Transmittance
External Reference is measured through air. The Gain settings for the reference measurements are set to
the value 0 per default. This field can be edited with expert rights.
The light that reaches the detector during measurement strongly depends on the physical nature of the
sample (the tablet). Thickness, density, colour and coatings will have an influence on the signal. There are
different options to control the sample gain.