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Operation
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Diode Array/Multiple-Wavelength Detectors (VC-D11, VC-D12, VF-D11)
Operating Manual
Reference Bandwidth
If the reference wavelength is used, the reference bandwidth
determines how many photodiode signals are averaged for the
reference measurement. You can set the reference bandwidth
separately for each signal channel and the 3D field (only available for the
VC‑D11 and VF‑D11 detectors).
Select a reference bandwidth that is as broad as possible, such as 30 –
100 nm. It should also be narrow enough to ensure that no analyte
absorbs in the reference range.
Figure 26: Example for a spectrum with reference bandwidth
No.
Description
A
Relative absorption
B
Wavelength range in nm
C
Suitable reference range
In this example, the reference wavelength is set to 350 nm and the
reference bandwidth is set to 100 nm.