Light Path Selection; Coarse Focus Tension Adjustment; Focus Stop Lever - Optika Italy B-1000 Serie Bedienungsanleitung

10.8 Light path selection
• The observation head is equipped with an optical path
selector that allows the light to be distributed to the eyepieces
and to the photo / TV port.
1. Move the selector ① to one of the three possible positions to
distribute the light. (Fig. 27)
POSITION
IN
MIDDLE
OUT
10.9 Coarse focus tension adjustment
The tension of the coarse focusing knob is factory preset.
1. To modify the tension according to personal's needs, rotate
the ring ②. (Fig. 28)
• 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.
10.10 Focus stop lever
The upper limit knob has two functions: prevent the contact
between slide and objective and acts as "focus memory".
1. After focussing the specimen, pull the lever ① toward the
front of the microscope and lock it. (Fig. 29)
• In this way the focus upper limit is set.
2. 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 lever in the opposite direction to
the one used for the locking.
• Two stoppers ② are inserted on the frame. DO NOT
REMOVE THE TWO STOPPERS.
LIGHT
100% EYEPIECES
50% EYEPIECES / 50% TV
100% TV
Page 24
②
①
②
①
F ig. 27 F ig. 27
F ig. 28 F ig. 28
UNLOCK
F ig. 29 F ig. 29
LOCK