Polytec OFV-511 - Page 31

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To display the output signals, proceed as follows:
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1. Connect an oscilloscope to the BNC jack VELOCITY OUTPUT on the
front of the controller.
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2. Select the next highest measurement range if the L ED OVER is continu-
ously lit up at the front of the controller (refer to section 4.2.2).
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3. Increase the intensity of the light scattered back by various surface mate-
rials.
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4. Connect an oscilloscope to the BNC jack DISPLACEMENT OUTPUT on
the front of the controller.
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5. Press the CLEAR key several times.
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The following sign convention for direction applies to the output signals:
A movement WRZDUGV the sensor head is considered as being SRVLWLYH . In
this case the velocity output voltage is positive and the displacement output
voltage is increasing.