MAGNET Field: How to configure an RTK survey for a UHF HiPer VR

This quick guide walks you through the configuration steps in MAGNET Field to set up a HiPer VR to use in an RTK survey.

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MAGNET Field: How to configure an RTK survey for a UHF HiPer VR

Click Configure > Survey.

Under GNSS Configuration, click Select from Library.

Select the My RTK configuration, and click Add.

MAGNET Field contains pre-defined templates that you can use as a base for your RTK configuration.

Give a set name to your configuration, and click Next.

Set the Base and Rover manufacturer as Topcon.

Click Next.

Set the Receiver Model to HiPer VR.

If you set the RTK Format to RTCM3.x, the base will only broadcast GPS and GLONASS.

Set the RTK Format as RTCM3.x MSM3 to use Beidou, Galileo, and QZSS in addition to GPS and GLONASS.

Click on Ant Height > Edit to set the antenna height.

The vertical antenna height is measured from the antenna reference point (ARP).

The slant height is measured from the slant height measure mark (SHMM).

If you are unsure of the ARP and SHMM, please refer to the manual.

For a UHF radio, click the drop-down menu.

If using a 915+ radio, select R2 Lite FH.

What is my antenna type?

  • If the whip antenna twists and locks, the receiver has a UHF modem.
  • If the whip antenna is threaded with no lock, it is a 915+ modem.

Can I mix and match receivers with UHF and 915+ modems?

  • No. They are different modem types and not compatible.

For newer radios such as the HiPer VRs, use 4FSK modulation.

Set Scrambling to On.

  • This activates a more robust data communication in high interference areas.

Set FEC (forward error correction) to On.

  • This activates a technique to control errors in data transmission over unreliable or noisy communication channels.

Set the Receiver Model as a HiPer VR.

Leave the Rover RTK Format as RTCM3.x.

Set the rover antenna height. It is good practice to always measure the GPS rod before you start surveying.

Select the rover radio type to R2 Lite UHF.

Click Next.

Set the tilt correction limit to the desired value. Five degrees is easier to measure than three degrees.

Once you get to the Tracking screen, make sure to enable BDS (Beidou) and Galileo.

If you are located near Australia, Asia, or the western side of North America, add QZSS.

  • QZSS, the Japanese satellites, are not visible from all parts of the globe.
  • NavIC, the Indian satellite constellation is only visible from Asia.

Leave Use all signals unchecked.

On the Advanced screen, click on the M icon. Select RTK Settings.

Set the PDOP Mask to 3.5.

Click the green check mark to save.

Click the green check mark to save.

Click on the green check mark until you reach the home screen.