7
6 Data
6.1 Technical specifications of the rotary viewer
Slides:
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Slide frame format; 41x101 mm.
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Maximum picture size; 23x33 mm.
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Compatible with RBT frames, mounted between glass maximum 3 mm. Thickness.
•
The drum can hold 10 slides and accompanying text cards (cut to size 42x74 mm.)
Optics:
•
One lens barrel holds 2 achromatic lenses of
∅
37 mm. f= 120 mm. each.
•
Total focal distance is 60 mm.; magnification: 4.2 x
•
Lenses are coated on all sides
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Lens separation is fixed to 62 mm.
Illumination:
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The slide is illuminated by a single CCFL (Cold Cathode Fluorescent Lamp) passing
its light through a light guide.
•
The colour temperature is 5500 Kelvin.
•
The lamp runs on 12 Volts dc at ± 300mA using an inverter.
Mechanics;
•
The Housing of the viewer is made of plain anodised aluminium. The wall bracket and
lens barrels are made of stainless steel.
•
The slide drum revolves on ball bearings and don’t need any lubrication.
•
A 12 Volts motor using a cock wheel mechanism revolves the drum.
•
When removing the steel plate at the left side of the viewer (4 bolts), you get access to
four M4 bolts. These bolts make it possible to adjust the focus of the slide drum with
regards to the fixed lenses. Do NOT un-fasten these bolts, the focus has been
adjusted in the factory very carefully!
Electronics;
•
The whole viewer runs on 12 Volts dc. The viewer comes with a 220 Volts AC adapter
giving 12 Volts dc. at 500mA. Or 12 Volts ac at 500mA (models produced after
February 2009). Check your viewer!
•
The internal circuitry is fused with an 1 Amp. fuse.
Summary of Contents for 2007
Page 12: ...12 6 6 Electronic schematics ...
Page 13: ...13 6 7 PCB layout ...