ashtech DG14, Reference Manual

Page: 145 / 390

Receiver Commands 125
Receiver Commands
Example
Enter the following command to set Port A with a baud rate of 4800, Port B with a
baud rate of 19200, and to reset internal memory:
$PASHS,INI,4,6,6,1
The INI command is not fully functional with the DG16. Since the DG16 does not contain a memory
area for data storage, the reset memory code for external memory (2) has no effect on the receiver.
Resetting internal memory (1), or resetting internal and external memory (3) have the same effect.
The parameter settings for this command were maintained for the DG16 in order to preserve
consistency with other Thales Navigation receivers.
ION: Ionospheric and Tropospheric Modelling
$PASHS,ION,c1
This command enables or disables the use of ionospheric modelling, which is used
to compensate for delays that occur as the GPS signals travel through the
ionosphere, where c1 is either N (disable) or Y (enable). You can see whether
ionospheric modelling is enabled or disabled by entering the
$PASHQ,PPR
command.
Example
Enter the following command to enable ionospheric modelling:
$PASHS,ION,Y
Ionospheric modelling should be enabled when the receiver is functioning in stand-alone mode
(autonomous mode). Ionospheric modelling is ignored when the receiver is set as an RTCA rover,
regardless of the current ION setting, since differential corrections already compensate for
ionospheric delays.
2 Reset external memory (battery-backed RAM including
ephemeris, almanac, time, date, last position, etc.)
3 Reset internal and external memory
DEFAULT SETTING
ION Y
Table 6.26. Memory Reset Codes (Continued)
Reset
Memory
Code
Action