22
8. Filter
selection
Filter holder can hold two filters
Filter type
Procedure
ND (Neutral Density) filter
For intensity adjustment in photomicrography
GIF (Green Interference) filter 546nm
For phase contrast and contrast adjustment with
black and white film
Blue filter
For general microscopy and colour
photomicrography
9. Auto/Off/On switch function
(Fig.30)
y
The power control knob is located above the left focusing knob
y
When “auto” is selected, the blue pilot lamp indicates that an IR-sensor is activated (Fig.30). If no
user is detected in front of the microscope, the microscope illumination will automatically switch off
after 15 minutes.
When the user returns, the illumination will start again.
*
Never attempt to switch directly between "on" and "auto".
The buffer "off" is necessary between auto power off mode and normal mode.