Kodak 800 SERIES service manual Quadrature Signal Generation

NovaJet 800 Series Service Manual

DETECTOR 2

DETECTOR 1

ENCODER STRIP

OUTPUT OF DETECTOR 1

OUTPUT OF DETECTOR 2

COMPOSITE TRANSITION-TRIGGERED OUTPUT OF BOTH DETECTORS

4 OUTPUT PULSES PER OPTICAL LINE

Figure 2-9. Quadrature Signal Generation.

The direction that the Carriage Assembly is moving is calculated based upon the state of one detector’s output and the direction of the transition of the other detector’s output.

Theory of Operation 2-14