4.8 Output configuration
4.8.5 Disabling message outputs via terminal
To disable a message from being output, the command below should be issued to the unit. This consists
of the command required, the port and the message type:
UNLOG COM1 GPGGA
To stop all output messages on a single port, the command below can be issued stating the port:
UNLOGALL COM1
4.8.6 Setting GGA precision selection via terminal
It is possible to configure the number of decimal places used in the Latitude and Longitude fields output
in the GGA Message. The precision can be set to 5, 6, 7 or 8. When changing the precision value, the
same value should be applied to both the Longitude and Latitude. The command requires to state GGA_
LATITUDE or GGA_LONGITUDE, followed by a precision value detailed in the table below:
Precision Latitude command Longitude command
5 NMEAFORMAT GGA_LATITUDE 10.5 NMEAFORMAT GGA_LONGITUDE 11.5
6 NMEAFORMAT GGA_LATITUDE 11.6 NMEAFORMAT GGA_LONGITUDE 12.6
7 NMEAFORMAT GGA_LATITUDE 12.7 NMEAFORMAT GGA_LONGITUDE 13.7
8 NMEAFORMAT GGA_LATITUDE 13.8 NMEAFORMAT GGA_LONGITUDE 14.8
4.8.7 Setting PPP DQI via terminal
When using either Apex or Ultra PPP services the Differential Quality Indicator is a value reported within
GGA messages to indicate solution status. The LD8 allows for two configurable behaviours for this value.
DQI behavior Command variable
When the calculation is converged to a PPP
service the DQI will report the value 2.
2
When the calculation is converged to a PPP
service the DQI will report the value 5.
5
The below command example shows the behaviour of the DQI when converged for PPP to a value of 2.
The highlighted area below is where the variable of 2 or 5 should be set:
GGAQUALITY 4 OUT_OF_BOUNDS 2 WAAS 2 PPP 2 PSRDIFF 2
4.8.8 Setting baud rates via terminal
The LD8 allows for each Serial Port to be set at different baud rates. The following baud rates are
available to be set: 2400, 4800, 9600, 19200, 38400, 57600,115200, 230400 or 460800
To set the baud rate the SERIALCONFIG command should be used along with the port name for the
desired change. An example of the command is below, with the port and baud rate highlighted:
SERIALCONFIG COM1 9600 N 8 1 N OFF
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LD8 Operations Manual