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Laurel Electronics LAUREATE SERIES 2 COUNTER-TIMER-SERIAL INPUT METER User Manual

Page 46

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46

A Channel

B Channel

Zero Index

Bourns: EN Series.

A Channel

B Channel

Zero Index

Computer Optical Products
Models CP-350, CP-360, CP-370, CP-850, CP870,CCW rotation.

A Channel

B Channel

Zero Index

Encoder Prod: Models H25, L25, E25, MOD5500, MOD5600,CCW rotation

.

A Channel

B Channel

Grayhill & Oak-Grigsby:

CW rotation. No Zero Index.

90-270 deg

QUADRATURE RATE

Rate and direction may also be displayed using an extended version of the counter. Using
quadrature to determine rate not only has the advantage of displaying direction but also
eliminates errors due to vibration and jitter that cause erroneous readings in standard rate
meters. The meter uses A-B to display quadrature rate. Scale 1 is used to set A to the
proper value and scale 2 is set to identical values. Rate (I1) is the difference between
Channel A and Channel B.