How to complete a Topo survey using Base & Rover with Leica Captivate CS20

This guide assumes that the RTK Profile, Working Style and GS connections are already configured. This guide is for Leica Captivate v4 and above.

Step 1: Prepare the system

Turn on the CS20 controller, the GNSS Rover and the GNSS Reference antennae
From the Home screen, select Settings, then Connections, then RTK Rover Wizard
Select Load an existing profile, then F6 Next
Select a suitable base/rover Radio profile from the drop-down list
Select F6-Finish
The icon on the status line shows a radio modem

Step 2: Create a job

From the Home screen, press F6 Jobs
Select F2 New, then give the job a name
Select F6 Page, then choose your required coordinate system. The coordinate system definition may include a geoid model.
Select F6 Page, then choose your code list
Select F1 Store, then F1 OK
If you have data to load into the job, insert a USB in the base of the controller with a CSV file in the Data folder
In this QRG we will use a text file (Point,N,E,H,Code with or without a header line)
From the Home Screen, Select the job in the job carousel
Import Data - ASCII/GSI
Data type - ASCII Data
From – USB
From file – Select the required CSV file
To Job – Pick your job
Select F3 Display to review the file content
1. Close “X” to close the viewer
Select Fn – F1 Settings to define the order of the data in the file
F1 OK to save the changes
F1 OK to Import
Tap on the job in the carousel
Select View and Edit data
1. Confirm the points have imported, then F1 OK
Make sure your job is in the center of the job carousel

Step 3: Start the base

From the Home screen, select Switch to Base from the Apps carousel
After the base is connected…
Select Base Setup, then Over Known Point (you may also use “over known point” option if you do not have the base station coordinate)
Slot the height hook into the tribrach and read to the white line on the height hook. Enter the antenna height
Make sure the Antenna type is GS16 Tripod
Select the point ID for the base
Select F6 Next, then Return to Rover mod

Step 4: Start a survey

After a few seconds in Rover mode, the position icon will change to a cross, showing that the rover has initialised
From the Home screen, Select the Measure app
Enter a Point ID
Enter the antenna height (1.8 or 2m on snap lock pole)
Select F6 Page
Select Find and add codes
Select a code for the point you are measuring (if required)
When ready to measure, press F1 Measure
The point will be stored
Repeat step 11 for each surveyed point

If the code is for a stringable feature (e.g. Top of Bank) a default string number will be present. Select + or – to change string number to create a new string

Step 5: Export ASCII Data

Insert a USB into the base of the controller
From the Home Screen, Select the job in the job carousel
Export data – ASCII
To device – USB
To folder – Data
Output filename – enter as required
Select Fn F1 Settings
Select the required delimiter, which fields to export and the order of export
Select F1 OK
Select F1 OK

Step 6: Export DXF Data

Insert a USB into the base of the controller
From the Home screen, Select the job in the job carousel
Export data – DXF
To device – USB
To folder – Data
Output filename – enter as required
Select Fn F1 Settings
Check the 3 pages of settings match your requirements
Select F1 OK
Select F1 OK