Chapter 3
Theory of Operation
Trimble S, VX, SPS & RTS Service Manual3 - 62 P/N 57150002, Revision 5.0
F
Telescope
The telescope makes it possible to aim at a target visually. It consist of eyepiece, front lens, erecting
prism and focusing lens.
Furthermore to the normal function of a telescope, it transmits the laser beam from the distance unit
and the tracker transmitter. It also receives the target signal and directs them to the distance meter and
the tracker receiver.
Fig. 3-57 Optical layout of the telescope (optical parts are blue coloured)
Technical Specification
• Magnification: 30 x
• Clear aperture: 40 mm (1.57 in)
• Field of view: 1,5 degrees, 2,6 m at 100 m (8.5 ft at 328 ft)
• Focusing range: 1,5 to ...
• Reticle illumination: wavelength: green 590 nm, variable in 10 steps
• 90 degrees eyepiece - Option
Front lens
Eyepiece
Porro prism
with Reticle
Motorized
Focusing drive
Focusing lens
Selective
Transmitter
prism
Mirrors
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