Use Of The Microscope; Switching On The Microscope; Light Intensity Adjustment; Coarse Focus Tension Adjustment - Optika Italy B-290 Serie Manual De Instrucciones

8.

Use of the microscope

8.1

Switching on the microscope

1. Operate on the main switch ① placed in the rear
side of the microscope, moving the selector on "I"
(Fig. 19)
• For "LD" models only: there is a three-position
switch on the rear of the stand: position "I" turns
on the transmitted light, position "II" turns on
the fluorescence and position "O" turns off the
microscope.
8.2

Light intensity adjustment

1. Operate on the light intensity dial to increase or
decrease the illumination intensity. (Fig. 20)
8.3

Coarse focus tension adjustment

• Adjust the tension using the provided tool.
The coarse knob tension is pre-setted in the factory.
1. To modify the tension according to personal's
needs, rotate the ring using the provided tool
(Fig. 21).
• Clockwise rotation increases the tension.
• If the tension is too loose, the stage could go
lower by itself or the focus easily lost after fine
adjustment. In this case, rotate the knob in order
to increase the tension.
8.4

Stage

Stage accepts standard slides 26 x 76 mm, thickness
1,2 mm with coverslide 0,17mm. (Fig. 22)
1. Open the spring arm of the slide holder ② and
place the slide from the front on the stage.
2. Gently release the spring arm of the slide holder.
• A sudden release of the spring arm could
cause the falling of the slide.
Page 15
①
②
F ig. 19 F ig. 19
F ig. 20 F ig. 20
F ig. 21 F ig. 21
F ig. 7 F ig. 7
F ig. 22 F ig. 22