Olympus CHA Buku Petunjuk - Halaman 10

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C. Interpupillary Distance and Diopter Adjustments (Binocular tube)

(

1) Hold the knurled dovetail slides Q) of the right and

left eyepiece tubes with both hands and push the

tubes together, or pull them apart laterally, which-

ever is required, while looking through the eyepieces

with both eyes, until perfect binocular vision is

obtained (Fig. 21.

21 Rotate the tube length adjustment ring

on the

right eyepiece tube to match your interpupillary

distance setting which you obtained from the scale

3) Look at the image through the right eyepiece with

your right eye and focus on the specimen with the

coarse and fine adjustment knobs.

Fig.2

4) Next, looking at the image through the left eyepiece with your left eye rotate the tube

length adjustment ring

to focus on the specimen without using the coarse and fine

adjustment knobs.

D. Tension Adjustment of Coarse Adjustment Knobs

A tension adjustment ring

is provided next to the

right hand coarse adjustment knob. With this device the

tension of the coarse adjustment is freely adjustable for

either heavy or light movement depending on operator

preference. However, do not loosen the tension adjust-

ment ring too much, because this may cause

thE~

stage to

drop or the fine adjustment knobs to slip.

The arrow mark indicates increase of the tension.

Be careful not to rotate the right and left coarse adjust-

ment knobs in the opposite directions simultaneously.

Automatic Pre·focusing Lever

This lever

is provided to prevent possible contact

between specimen and objective as well as to simplify

coarse focusing. The lever is locked after coarse focus

has been accomplished. This prevents further upward

travel of the stage by means of the coarse adjustment

knobs, and automatically provides a limiting stop

if the stage is lowered and then raised again. The

automatic pre-focusing lever does not restrict fine focus-

ing. (Fig. 4)

Fig. 3

Fig.4