Spectra Precision Survey Pro v5.1 User Manual

Page 41

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35

Tap

Connect.

When creating a job, if you decided not to choose a coordinate system, you
will be asked to reconsider this choice when starting the base. The

Start

Survey Prompt Projection screen will appear at this time with two possible
options:

1.

Ground Calibration: Choose this option if there is no known projection or
datum to relate your local grid coordinates to geodetic coordinates
(through this choice, you confirm your decision to use local control to
set up a coordinate system). The selection of a geoid is possible after
making that choice.

2.

Mapping Plane: Tap on this button if you now wish to use a coordinate
system (i.e. known origin and type of projection + known datum) that
can either be keyed in or picked from Survey Pro’s coordinate system
database. For more information on the projection mode, refer to
Introduction to Calibration on page 44.

NOTE: If you always start your GNSS surveys with the same type of projection
mode, then you can tap

Don't ask me again at this prompt, and Survey Pro will

start the GNSS survey with the settings you used to create the job.

Survey Pro will poll for the base position. While Survey Pro does this, enter
the antenna height you measured previously (

Measured field) and how you

measured it (

To field).

You may ask the base to log raw data (for post-processing) by just specifying
a recording interval in the

Post Processing Recording Interval field. When you

start a rover, by default it will automatically use the same recording interval
as the base you set. Set the recording interval to “Off” if you do not want
to record raw data.

Tap

Next. Survey Pro searches the point database for a location that

matches the current base position (the one that was checked on the
previous screen). If a matching point is found in the job, then Survey Pro
offers this as the default base point. Tap

Change to choose a different point

or to create a new point for the base setup.

Tap

Next. The base is now started. Survey Pro prompts you to start the rover

(as if you had tapped

Start Survey on the Home screen). Underneath the

GNSS receiver profiles list now displayed, the screen provides the status of
the data link (a green dot means it’s properly set up to receive corrections).

NOTE: if you only want to set the base at this time, tap

. Survey Pro will then exit

the Start Survey wizard and open the GNSS status page connected to the base.

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