CSD (Circuit Switched Data) Connection Guide

This guide lists the steps involved in setting up a CSD (Circuit Switched Data) connection to transmit
correction data between GNSS base and rover via voice only.

This document is a general guide, meant to apply to several instrument makes and models.

Please note: This type of connection is only possible through certain cellular providers who permits this functionality.

Download a PDF version here.

Start Field Genius

Create a new project

Go to Select Instrument

First we set up the base station. Choose GNSS Reference. Add an in instrument profile and select Edit

Choose model and communication

Select your instrument make and model. Change the Port to Bluetooth, then select Bluetooth device list

Run a search if your device is not listed

Bluetooth device search

Choose connect

Choose a coordinate system if you have not set one previously for this job

Choose continue

The map screen with open, choose Known Position

Choose Average Geodetic Position

Choose Start Reference

We can see live updates of the base receiver’s current position. Choose Set position

Input a Point ID and Description. Then choose Store Point. Our Base point now been established

The Link configure screen will open. We need to set up the data link settings. Choose Setup

Set the Source Type to Direct Dial (CSD). Choose OK and then Connect

Connecting

You will be brought back to the Map screen. Go to Instrument Settings

Choose Instrument Disconnect

Power on your GNSS rover and choose Select Instrument

Under Instrument Type choose GNSS Rover. Then add or select an existing Profile. Choose Edit

Under Model and Communication choose the make and model of your GNSS rover
Change the Port to Bluetooth and select the device. Or set up a new device using the same steps as the GNSS reference earlier in this tutorial
Choose Connect