7
USING THE CONTROLS OF BX-RLAA
1
Selecting the Observation Path
(Fig. 1)
Select the mirror for the desired observation method by pressing the BF
button @ or DF button ² on the hand switch.
BF: Reflected light brightfield observation
DF: Reflected light darkfield observation
2
Centering the Field Iris Diaphragm (FS)
(Figs. 1 & 2)
1. Press the BF button @ on the hand switch to select the reflected light
brightfield path.
2. Engage the 10X objective, place the specimen on the stage and adjust
approximate focusing.
3. Pull out the FS knob ³ on the reflected light illuminator to reduce the
aperture iris diaphragm a little.
4. Rotate the two FS centering screws | using the Allen screwdriver to ad-
just so that the field iris image becomes concentric with the field of view.
5. While pushing in the FS knob ³, open the field iris diaphragm until the
field iris image inscribes the field of view. If the image is found to be eccen-
tric, adjust the field diaphragm centering again.
Fig. 1
Fig. 2
@
²
³
|
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