13
GB
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DE
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B
C e g
h
1!
i
j
1)
D F
4x
2x
4. Mechanical Stage Controls (Fig. 6)
The mechanical stage control consists of three parts:
B
For quick adjustment, push the lever (1) for moving
towards a position.
C
Cross moving knob for transversal adjustment (2).
D
Lengthwise moving knob for longitudinal adjustment (3).
5. Vertical Illumination Alignment (Fig. 7)
Fig. 7
B
Phototube
C
Field diaphragm adjustment rod
D
Field diaphragm centering screw
E
Filter seat
F
Aperture diaphragm adjustment rod
G
Focusing lens adjustment lever
h
Halogen lamp
i
Cover
j
Screws for cover
1)
Lamp socket
1!
Lamp centering screws
1) The aperture diaphragm near the lamp house may be
adjusted slightly (with 5) to change the contrast.
2) To center the incident or vertical lamp:
a) Put a piece of paper and place it on the stage. Take out one
objective from the nosepiece and rotate the nosepiece until
the objective opening hole is in position over the paper.
b) Turn the power on and adjust the brightness to establish
sufficient light.
c) This paper will allow for focusing the lamp filament on it.
If the filament image (Fig. 8, No. 1) is not centered in the
overpass hole (Fig. 8, No. 2), reduce the aperture diaphragm
(with 5), loosen the screws (9), remove the cover (8) and
adjust the lamp centering screws (11) to obtain an uniform
image. Adjust the focusing lens lever (6) until a sharp image
of the lamp filament is attained. Refer to Fig. 8 for this
step.
B
Filament image
C
Overpass hole
3) Reinstall the objective
again.
4) Adjust the focusing control
until the image is clear. If
the brightness of the field
not equal, you may adjust
the lamp centering screws
(11) and the focusing lens
lever (6) slightly to make
the brightness of the field
equal. Then reinstall the
cover.
5) Reduce the field diaphragm (with 2). If it is not centered,
move it to the center using the field diaphragm centering
screws (3). (These screws are located on both sides be-
hind small protecting caps, which have to be removed
beforehand.) Adjustment can be done by opening the field
diaphragm.
6) The filter seat contains a green, a yellow, a blue filter and
a matted glass. You may drive anyone to the light path in
order to obtain an image of special quality.
7) The polarization analyzer is used in conjunction with the
polarization filter cube, selected by pushing in the analyzer
filter rod (Fig. 9, No. 4). Push the polarizer (Fig. 1, No. 3) to
the working position, rotate it while watching the bright-
ness in the field and let the polarizer and analyzer stand
orthogonally (minimum brightness). In order to remove the
analyzer from light path, push the rod for normal upper light
(Fig. 9, No. 3) in.
8) The rod (Fig. 9, No. 2) to the upper left of the trinocular
head is to direct 100% of the image light to the binocular
tube (with eyepieces) or to the phototube (Fig. 9, No. 1). It
satisfies high-grape photography.
B
Phototube with camera port
C
Rod to direct the image to binocular tube (with eyepieces)
or to camera port
D
Rod for normal upper light
E
Rod for analyzer filter
D
B
C
C
B
Fig. 8
B
C
D
E
Fig. 9
Fig. 6
