Olympus VMT-4F-W Buku Petunjuk - Halaman 6

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Halaman Cetak

Fig. 3

. Specimen on the Stage Plate

OPERATION

The stage plates fit into the circular opening

in the base.

The clear plate can be used for

both

reflected

and

transmitted

illumination.

Colored

background

can

be achieved

placing

suitable

material

beneath

the

plate,

for contrast, etc.

The

frosted

plate

is used

with

reflected

illumination,

The

plate is frosted white on

one side, and

black

on the

other.

If the specimen

is white

brightly

colored, use the black

side of the plate to

increase image contrast by darkening the background.

For dark or black specimens, reverse

the plate with the white frosted side facing the objective.

Tension Adjustment of Focusing Knobs

This

focusing

mechanism

makes

its motion

freely

adjustable

for

either

heavy

light

movement

depending

the

observer's

preference.

To adjust

the tension hold the two focusing knobs with both

hands

and

slightly

rotate

them

the

opposite

directions, at the same time.

(Fig. 1)

Place a specimen

in the center of the stage plate and

clamp it with the stage clips, if necessary.

(Fig. 2)

Interpupillary

Distance Adjustment

Hold

the

right

and

left eyepiece

tubes

with

both

hands

and

push

pull

the

tubes

the

arrow

directions until perfect binocular vision is obtained.

(Fig. 3)

Fig. 2

. Diopter Adjustment

Looking

through

the right eyepiece

with your

right eye,

focus on

the specimen

with

the focusing

knobs.

NOTE:

In case of the Model VMT-W or Model VMZ-W, ascertain that the high magnifica-

tion objectives are used for this adjustment:

b) Look

at the

image

through

the left eyepiece with your left eye, and rotate the diopter

adjustment ring @ to focus on the specimen, without using the focusing knobs.

(Fig. 4)

NOTE:

If accurate

interpupillary

distance

and

diopter adjustments are not accom-

plished,

prolonged

observation

would

put considerable strain on the observer's

eyes.