Frequently Asked Questions
GPS FAQ's3D Machine Control FAQ'sLaser FAQ'sGPS FAQ's
- How can I optimize vertical accuracy for leveling and drainage?
Answer: For optimal vertical accuracy, we recommend operating within a 2 mile range from a single RTK base station. For optimal horizontal and vertical accuracy, it is also critical that the base station antenna have a good clear veiw of the sky, with no multipath signal sources (signals reflecting off trees, buildings, vehicles and so on), no trees or other obstructions, and no sources of radio interference nearby.
- Within 2 miles of a single base station, the absolute vertical RTK accuracy should be within +/- 1 inch, 95% of the time.
- At 10 miles from a single base station, the maximum vertical RTK errors are typically two times worse then they are within 2 miles.
- For leveling and drainage applications we recommend being within 5 miles of the RTK base station for maximum vertical accuracy
- What are the benefits of GLONASS?
Answer: GLONASS is a satellite constellation operated by Russia and currently offers an additional 21 satellites. The additional satellites can often enable you to keep operating with RTK positions around trees, hills, and other obstacles when less than 5 GPS satellites are visible. GLONASS can improve vertical accuracy for short periods during the day when there are no GPS satellites at high elevations. Accuracy is improved due to the increased satellite availability.
- Can I use Network RTK corrections?
Answer: Many of the products we sell (such as the FmX display) will work using Network RTK corrections, such as Trimble VRS or a DOT RTK Network. We do not recommend using a cell modem to connect to a DOT network for leveling or drainage work or customers who need near constant up-time. The availability of the network, poor cellular coverage, and peak usage disconnects can lead to down time and loss of productivity.
3D Machine Control FAQ's
- Do I need my own Base Station?
Answer: Yes, it is the preferred correction method in most instances.
- How often do I need to have my laser serviced?
Answer: We recommend having your laser serviced and calibrated yearly.