-Resetting the DTP20 "Pulse" SpectrophotometerThe following procedure resets your instrument to the factory default settings.
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Disconnect the instrument from the computer and power adapter (if applicable).
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With the instrument in the power down mode, press and hold the Operation button.
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Slide the power switch at the back of the instrument to the on (right) and then release.
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Release the Operation button. The indicator light flashes green and then returns to a solid green. The factory defaults are reset and the instrument is ready to read.
After completing the reset procedure the instrument should be calibrated.
Note: The procedure described above does not erase measurements that may already be stored in the instrument's memory. Click here to review the process for clearing stored data.