Local Dgps Basestation; Enabling The Dgps Modes - Racelogic VBOX 3iV2 User Manual

VBOX 3i User Guide

Local DGPS Basestation

When the VBOX 3i is used in conjunction with a Local DGPS Basestation the positional accuracy can be improved from the standard 3m 95% CEP.
There are two available Basestation options:
40cm Positional accuracy:
If the VBOX 3i is used with a RLVBBS2 then the positional accuracy is increased to 40cm 95% CEP. The height accuracy is improved to 1M 95%CEP
2cm Positional accuracy:
If the VBOX 3i has an RTK upgrade option installed and is used with a RLVBBS4RG then the positional accuracy is increased to 2cm.
- Racelogic proprietary 2cm correction (Not compatible with VB3i-SL RTK)
- CMR 2cm correction (Trimble standard message type)
- RTCMv3 2cm correction (RTCM standard message type) RECOMMENDED
RTCMv3 is recommended as the default RTK 2cm correction type. This message format is a globally recognised type and more resilient to data loss caused by radio
errors.
Note:
RLVBOX 3iR2G2 has a max log rate of 20Hz when in RTK mode.
RLVBOX 3iR10G10 & RLVB3i-SL RTK has a max log rate of 100Hz when in RTK mode.

Enabling the DGPS modes.

The VBOX must have the correct DGPS mode enabled in VBOX Tools or VBOX Manager before it is capable of receiving and using the DGPS correction
information transmitted by a Local Basestation.

Run the latest VBOXTools software

Enter the VBOX setup screen and go to the GPS page

Click on the DGPS button and select the correct DGPS mode from the available option

Close the VBOX setup screen.
28/08/2013
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