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 The OS3 offers
more sophistication and provides many more functions than its forerunners,
Quinto and Orbit. The number of electronics components is almost
double than what one finds on the Quinto. I was successful to place
these on boards of even smaller size. The density factor was increased
by over 100%. I think this best illustrates the state of the art
circuit design which we master with our latest CAD tools.
To meet the
ever increasing requirements of EMI (electromagnetic interference)
protection we use four layer boards. One of the layers is solid
ground to shield the leadless surface mount devices (SMD), a combination
yielding superb EMI hardening.
Of course, EMI
protection concepts begin already with the power supply. It accepts
any voltage from 90 to 240 V, transients are suppressed, instabilities
of the mains are fully controlled and no ventilator enforced cooling
is required (except for the light on Vitrex).
The only circuit board which did not undergo conceptual changes
is that which powers the instruments. In fact we are using the same
proprietary output transformers as 15 years ago! So our customers
can continue to use their existing Oertli instruments. This is part
of our company policy: Oertli customers shall never enter a dead
end road.
OS3 processor
and controller board
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