Use Of The Microscope; Light Intensity Adjustment; Coarse Focus Tension Adjustment; Coarse Upper Limit Knob - Optika B-380 Serie Manual De Instrucciones

10. Use of the microscope

10.1

Light intensity adjustment

Operate on the light intensity adjustment knob to turn
ON / OFF the microscope and to increase / decrease
the illumination voltage ①. (Fig. 10)
10.2

Coarse focus tension adjustment

• Adjust the tension using the provided tool.
The coarse knob tension is pre-setted in the factory.
To modify the tension according to personal's needs,
rotate the ring ② using the provided tool (Fig. 11).
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.
10.3

Coarse upper limit knob

The upper limit knob has two functions: prevent the
contact between slide and objective and acts as
"focus memory".
After focussing the specimen, rotate the knob ③
and lock it (Fig. 12). In this way the focus upper limit
is set. Now one can lower the stage with coarse
focus knob, replace the specimen and raise again
the stage up to the upper limit: specimen will be in
approximate focus and will need a fine adjustment
to get the proper focus.
Fine focus movement is not affected by the coarse
focus lock.
• To unlock, move the knob in the opposite
direction to the one used for the lock.
10.4

Stage

Stage accepts standard slides 26 x 76 mm, thickness
1.2 mm with coverlside 0.17mm.
It is possible to place two slides side by side on the
stage. (Fig. 13)
• Open the spring arm of the slide holder ④
and place frontally the slides on the stage.
• Gently release the spring arm of the slide
holder.
• A sudden release of the the spring arm could
cause the falling of the slide.
④
Page 12
①
③
Fig. 10
②
Fig. 11
Fig. 12
Fig. 13