Leica Geosystems Leica mojoXact Plus User Manual

Page 111

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Leica mojoXact Plus, NMEA Output

111

7. Change the Baud Rate (if necessary) to the value appropriate for your applica-

tion by selecting the value from the list.

8. For each NMEA sentence either select Off so it is not output, or the output rate

required in the Rate list.

9. To proceed to the second NMEA 0183 Settings screen, select

.

If an output rate is selected that is not compatible with the baud rate selected,
an error appears and you cannot proceed until compatible values are selected for
the baud rate and the sentence output rates, and the error is cleared.
To cancel the changes to the values and return to the NMEA Settings screen,

select .

10. For each NMEA Sentence on the second NMEA 0183 Settings screen, either select

Off so it is not output, or the output rate required in the Rate list.

11. To proceed to the Advanced NMEA Settings screen, select

.

If an output rate is selected that is not compatible with the selected baud rate,
an error appears and you cannot proceed until compatible values are selected for
the baud rate and sentence output rates, and the error is cleared.

To cancel any changes to the values and return to the NMEA 0183 Settings

screen, select

.

The Advanced NMEA Settings screen has the following fields:

Compatibility Mode: allows the quality status value in the NMEA messages to
be set to the given status regardless of the current GPS input status.
Velocity Filter: this should be left as Kinematic and provides the RTK speed from
the positioning system.
Position Correction: when used with RTK, allows the user to select the NMEA
position output location relative to the antenna and selects if terrain compensa-
tion is to be applied.
Geoidal Distance: if geoidal distance is enabled then the geoid distance is used
in the correction calculations.

12. Select appropriate values for the Compatibility Mode and Position Correction

fields.

13. If the geoid distance is to be used in the correction calculations, ensure the

Geoidal Distance checkbox is selected.

14. To complete the NMEA 0183 setup for exporting to a USB memory key and return

to the main navigation screen, select

.

To cancel any changes to the values and return to the NMEA 0183 Settings

screen, select

.

Once NMEA logging has been turned on, the NMEA sentences are logged to the USB
memory key as they are generated. The NMEA data is logged to a file named
nmea_log.txt in the root directory of the USB memory key.

Remove the USB memory key only when the mojoXact Plus is powered down.

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