32
Fig.23. Exposure setting window
A detailed procedure of exposure value selecting is described in the second part of the
operation manual named
Software guidance
.
4.2.3. Checking the Cleanness of Thermal Plate Wells
While checking the optical unit geometrical settings, one has to increase the value of
exposure in 2 times in comparison with the operational values. There must be no bright spots
on the image of empty thermal plate wells.
It is recommended to check the purity of the wells before placing tubes, strips or plates with
PCR mixes, if there was a risk of contamination before.
Note!
Routine check of well cleanness must be carried out by the operator in compliance with
the instrument maintenance procedure (see item 5).
4.2.4. Tubes Height Measurement
Attention!
The height of the test tubes must be measured every time new type or brand of
plastic consumables is used, to ensure proper pressure of the hot lid.
To perform the tubes height measurement procedure:
Click
and then place tubes or stripes uniformly along the
thermal plate;
Select Preference/Device diagnostics/Measure height of the tubes in the menu bar and
wait for the message:
