ashtech DG14, Reference Manual

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Raw Data Commands 197
Raw Dat
a Commands
This message is output in binary format on every recording interval (RCI) for those locked satellites
with elevation equal to or greater than the elevation mask (ELM), and only if the number of locked
satellites is equal to or greater than minimum satellite mask (MSV).
MCA: Raw Measurements (Ashtech Type 3 Data Structure)
$PASHS,RAW,MCA,c1,s2,[f1]
This command enables or disables the measurement data (MCAA) messages with
Ashtech Type 3 data structure, where c1 is port A, B or C (optional port), s2 is ON
or OFF, and f1 is the optional numeric output interval setting supporting a range of
0.05 to 999 seconds, depending on the measurement update rate option installed.
The DG16 outputs this message in binary format on every recording interval (RCI) for locked
satellites with an elevation equal to or greater than the elevation mask (ELM), and only if the number
of locked satellites is equal to or greater than the minimum satellite mask (MSV).
$PASHQ,MCA,[c1]
This command queries for raw satellite measurement data contained in the Ashtech
Type 3 data structure.
c1 is the optional port designator for the response. If a port is not specified, the
receiver sends the response to the current port.
double [codetxmt] 8 The fractional part of the satellite transmit time in seconds.
The integer part of this number is ignored.
long [doppler] 4
Satellite doppler measurement (10
-4
Hz)
double [intdoppler] 8 Total phase in cycles - available only if carrier phase option
installed
short carphase1 2 Reserved
short carphase2 2 Reserved
short elevation 2 Satellite elevation in units of 0.01 degrees
short azimuth 2 Satellite azimuth in degrees
checksum 2 The checksum is computed by breaking the structure into 20
unsigned shorts, adding them together, and taking the least
significant 16 bits of the result
Total bytes: 42
Table 7.7. $PASHR,MBN Data String (Continued)
Field Bytes Content