DN117D-LED
I-SCOPE OPTICS JAPAN
11
3.2 Operation
Spanner
Fig.19
Fig.17
③
④
①
②
Fig.16
Fig.18
①
③
②
3.2.1 Adjusting the brightness
（
Fig.16
）
1.
Connect the power, turn on the main
switch
①
(shown in the figure)which on the
bottom side of the base to “
－
”(on).
2.
Turning the brightness adjustment knob
②
clockwise, the voltage decline, and the
brightness weaken; Whereas turning at the
opposite direction, the voltage raise, and the
brightness strengthen.
Using the microscope at a lower voltage
can prolong the service life of the bulb.
3.2.2
Placing the specimen
（
Fig.17
）
1.
Place the specimen
③
on the center of the stage,
and then hold it with the specimen holder
④
.
2.
Turn the transversal and longitudinal adjustment
knobs which on the mechanical ruler to move the
specimen onto the required position.
★
Be careful when changing the objective. If
you finish the observation with the short
working distance objective, and want to
change another one, be careful of not letting
the objective touch the specimen.
3.3.3 Focusing the specimen(Fig.18
、
19
）
1. Focus the specimen with 10X objective. To avoid
the objective touching the specimen during
focusing, you should raise the mechanical stage to
let the specimen close to the objective at first, then
slowly dispart them to bring the specimen to focus.
2. Turn the coarse focus knob
①
conversely to lower
the specimen and search images in the 10×ocular
simultaneously, and then use the fine knob
②
to
make focus. After that, you can replace with other
magnification objectives safely, and focus without
the risk of damaging the specimen.
●
The tight tension of the coarse focus knob has
already been adjusted before leaving factory.
If loosen (e.g. the stage slip down by its
weight), please screw the intention adjustment
collar
③
to the right position by the supplied
spanner.
