Msg: Differential Base Station Data - ashtech DG16 Reference Manual

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MSG: Differential Base Station Data

$PASHS,NME,MSG,x,s,[f]
Enable or disable message containing RTCM reference (base) station message
types 01, 03, 09, 16, 18, and 19 on port x, where x is the output port, and s is ON
or OFF, and f is the optional message output rate ranging from 0.05 to 999 seconds
depending on the measurement update rate option installed.
If the command is set without a period, the DG16 uses the period set by the
$PASHS,NME,PER command If the $PASHS,NME,PER command is issued after
this message period has been set, the period resets to the PER setting.
The DG16 ignores this command unless the it is sending or receiving differential corrections.
Example
Enter the following command to enable the MSG message on port A
$PASHS,NME,MSG,A,ON
$PASHQ,MSG,[c1]
This command queries the MSG message, where c1 is the optional port designator
for the output of the response. If a port is not specified, the receiver sends the
response to the current port. This command is ignored if the DG16 is not sending
or receiving differential corrections.
$GPMSG
The MSG messages contain base station status data for incoming or outgoing
RTCM messages. Fields containing base station ID number, current Z count,
current GPS time, and base station health status are common to all MSG messages.
In addition to the foregoing data items, the MSG message generated for RTCM
message type 1 also contains pseudo-range correction values (PRC), range rate
correction values (RRC), ephemeris data (IODE), and user differential range error
values (UDRE) referenced to the PRN number for each locked satellite. This
message can be set for output in one second increments.
The MSG message generated for RTCM message type 2 includes UDRE and IODE
data, but also contains delta pseudo-range corrections (delta PRC) and delta range
rate corrections (delta RRC) for each locked satellite. This message can be set for
output in one minute increments.
The MSG message generated for RTCM message type 3 contains the common
data fields (station ID number, Z count, etc.), but also contains the X, Y, and Z
components (earth-centered/earth-fixed; ECEF) of the base station's GPS
coordinates. This message can set for output in one minute increments.
NMEA Commands
253

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