Diopter Adjustment; Aperture Diaphragm; Use With Rechargeable Batteries - Optika Italy B-150P Serie Manual De Instrucciones

8.5

Diopter adjustment

Only B-150P-BRPL
1. Look into the right eyepiece with your right eye
only, and focus on the specimen.
2. Look into the left eyepiece with your left eye
only. If the image is not sharp, use the dioptric
adjustment ring ① to compensate. (Fig. 8)
• The adjustment range is ±5 diopter. The num-
ber indicated on the adjustment ring gradua-
tion should correspond to the operator's dio-
ptric correction.
8.6

Aperture diaphragm

• The Numerical Aperture (N.A.) value of the aper-
ture diaphragm affects the image contrast. Incre-
asing or reducing this value one can vary reso-
lution, contrast and depth of focus of the image.
Move the diaphragm lever ② (Fig. 9) toward left
or right to decrease or increase the N.A. value.
• With low contrast specimens set the numerical
aperture to about 70%-80% of the objective's
N.A. If necessary, remove on eyepiece and, lo-
oking into empty sleeve, adjust the condenser's
diaphragm in order to obtain an image like the
one in Fig. 10
8.7

Use with rechargeable batteries

When the microscope is plugged with the power sup-
ply, the LED indicator for the battery recharge ③ is
lit. (Fig. 14)
• LED red: battery under charge
• LED green: battery fully charged.
When the microscope is unplugged, the LED is off.
During the normal use with batteries, LED is always
OFF.
①
APERTURE
DIAPHRAGM
FIELD OF VIEW
③
Page 10
Fig. 8
②
Fig. 9
70-80%
30-20%
Fig. 10
Fig. 11