To operate on this step, install the photohead on the photometer bench and switch up the reference
source DNK-90.
The basic operation is the same as in step 1.
Measurement in each range should be conducted with the steady-state value of the maximum close to
4,000
units.
Do not allow overfilling (4095)!
If it is impossible to reach the normal level of the spectral sensitivity on the last ranges, the button
Low Level
should be pressed in the current window of the program; the remaining ranges will be
filled with the values of the last one which was successfully measured.
Determining the range lacing ratios
The ratios are calculated following the same scheme as in steps 1 and 2.
Place the photometer head in parallel to the plane of the item which is being measured. See to it that
the shadow of the operator who conducts the measurement does not cast itself onto the photohead
window, as well as the shadow of any irrelevant objects that are temporarily present.
To begin the measurements, place the photohead on the bench so that the maximum signal
3,800 …
4,000
units might be obtained. After the measurement in the selected range, not changing
the position of the photohead, increase with the button on the head the range to the next one and re-
peat the measurement.
Generated by Foxit PDF Creator © Foxit Software
http://www.foxitsoftware.com For evaluation only.
