Release Date: May 2015

Spectra Precision GeoInstruments

Spectra Precision / Nikon Mechanical Total Stations: Over Speed Error


  • Spectra Precision® FOCUS® 6 total station
  • Nikon Nivo M series total stations
  • Nikon DTM series total stations
  • Nikon NPL series total stations


An Over Speed error message frequently appears on the display of my instrument. What causes this, and how can I fix the problem?


If this message appears, it means that there is a problem with the code disk or angle sensor - the instrument cannot read out the correct angle value.

This message usually appears if there is dust on the code disc. Send the instrument for evaluation and /or repair as soon as possible.

This document is for informational purposes only and is not a legally binding agreement or offer. Spectra Precision makes no warranties and assumes no obligations or liabilities hereunder.