Changing The Measuring Aperture - Barbieri Spectro LFP S3 Operating Manual

Spectro LFP RT - Operating Manual

4.4 Changing the measuring aperture

The instrument is equipped with a selectable measuring aperture. The
switching occurs either automatically by the software or manually by
pressing the button placed on the right side of the measuring head.
The aperture size is valid for reflective and transmissive measurements.
The small aperture corresponds to 2mm aperture, the wide aperture
to 8mm.
Pressing the button will select the following apertures:
- LED=off: the 2mm aperture is selected
- LED=on intermittent: the 6mm aperture is selected
- LED=on always: 8mm aperture is selected
The small aperture is the default aperture.
The wide aperture should be used with structured materials or if the
print resolution is smaller than 120 dpi.
When using the wide aperture, make sure that your target to be mea-
sured has patches equal or larger than 10mm.
The recommended patch size is as follows:
2 mm aperture: 5 mm or larger
6 and 8 mm aperture: 10 mm or larger
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