56
IX81
Fig. 79
Fig. 80
Fig. 81
Fig. 82
7
Attaching the Observation Tube
(Figs. 79 to 82)
Binocular Tube (U-BI90CT, U-BI90, U-TBI90)
(Figs. 79 & 80)
1. Using the Allen screwdriver, loosen the observation tube clamping screw
1
on the observation tube mount. (Fig. 79)
2. Attach the circular dovetail mount of the observation tube into the obser-
vation tube mount, placing the observation tube so that the interpupillary
distance scale numbers
2
are seen right side up. Then tighten the clamp-
ing screw to clamp the observation tube.
}Normally, the distance from the surface of the desk to the eye point is
approximately 430 mm. If it is desirable to lower the eye point position, the
observation tube (provided it is other than the U-TBI90) may be detached,
turned 180° and then attached on the observation tube mount again. This
lowers the eye point height by approximately 30 mm. (Fig. 80)
Trinocular Tube (U-TR30H-2)
(Figs. 81 & 82)
}First mount the IX-ATU intermediate tube.
1. Using the Allen screwdriver, loosen the observation tube clamping screw
1
on the observation tube mount. (Fig. 81)
2. Insert the circular dovetail mount of the intermediate tube into the obser-
vation mount so that its upper surface is flush with the microscope frame.
Tighten the observation tube clamping screw
1
to clamp the intermediate
tube.
3. Using the Allen screwdriver, loosen the observation tube clamping screw
2
on the intermediate tube’s observation tube mount. (Fig. 82)
4. Insert the circular dovetail mount of the observation tube into the inter-
mediate tube’s observation tube mount so that the binocular eyepiece
sleeves face toward the front. Then tighten the observation tube clamping
screw
2
firmly. (Fig. 82)
1
2
1
2
