Meiji Techno MT9000 Series Specifications download pdf (Page 12)

2.6

Achieving

Koehler

illumination

r

Turn

on the

microscope

power

switch

and

set the

illumination

to a

comfortable

level.

'

Establish

one tield

of view

by adjusting

the

inter-pupillary

distance

of the

Siedentopf

viewing

head.

o

Make

sure

that

the Bertrand

Lens,

analyzer

and

any

other

sliders

are clear

of the

optical

path

and

that

the

iris

diaphragm

on

the

condenser

is

all

the

way

open.

o

Rack

up

the

condenser

to its

highest position

or until

the

top

erement

of the

condenser

rs

approximately

1mm

below

the

bottom

of

the

slide.

'

Place

a

familiar

specimen

on the

stage.

Using

the 1oX

objective,

bring

the

specimen

into

focus.

'

while

viewing

the

specimen

close

down

the lield

diaphragm

jusr

enough

so that

the

inner

edge

of the

iris leaves

are visible

as

shown in

{igure

,,A',

'

use

the

condenser

focusing

knob

to

slightly

lower

the condenser

ro

bring

the

edge

of the

iris leaves

into

sharp

focus

as

shown in

figure

,,B,,

'

By

using

the

two

condenser

centering

screws,

adjust

the

iris

opening

so it

is

centered

in

the middle

ot

the

field

of

view

as

shown in

figure

,,C,,

r

open

up

the field

diaphragm

so that

it

just

clears

the

edge

ot

the

field

of view

as shown

in

figure

,,D,,.

D

lt

Coarse

focus

knob

Brightness

control

ilArl

il8il

ilcil

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