Nikon S-kt - Page 9

Dase.
Turn the
brightness ad
justing
wheel
at the
side
of the
base, and the
green
area
in
the
voltmeter
window will indicate
the volt-
age,
increasing
as the wheel
is turned in
the direction of the
arrow below it.
(5)
Preparation
and Adjustment for
Observation
O
Attaching the Lamp
Cord
As shown in Fig.
9,
insert
the cord
connector, facing
the
notch
upward,
and
fasten
it
by a clockwise
turn of
the outside
lock ring.
@
Attaching
the Lamp
Socket
The lamp
socket
is
attached
as
fol-
lows:
Insert
the
socket,
fitting
the
key
groove
according to
the markinS
(FiS.
10). Turn it clockwise
and
push
it
in
Since
the
socket will
automatically
be
positioned
by
f riction,
there is
no
need
for further
ad
justment.
Do not insert
the
socket
fullv,
but
leave
a clearance
of
about 2mm to
attain the
brightest illumination.
O
Centering
the
Radiant Field
Diaphragm
Using the
40X objective,
bring the
specimen
into
sharp
focus.
Fully
close
the radiant field
diaphragm. Move
the
condenser
lens
vertically,
until
a
sharply
focused
image
of the
dia-
phragm
is
obtained
on the
specimen
surface. Then, move
the
diaphragm
image to the
center
by manipulating
the two centering
screws
(Fig.
1 1).
When
switching to other
objectives,
the
diaphragm image
may
slightly
deviate
from
the
centered
position.
producing,
however,
no
objectionable
results for
routine
observation.
Fis.
9
Fig. 10
Fig.
11
10