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178 Z-Family Technical Reference Manual

SAT: Satellite Status

$PASHS,NME,SAT,c,s

This command enables/disables the satellite status message to port c, where c is A, B,

C, or D, and s is ON or OFF.

Example: Enable SAT message on port B

$PASHS,NME,SAT,B,ON <enter>

$PASHQ,SAT,c

Query satellite status where c is the optional output serial port.

Example: Send SAT message to port D

$PASHQ,SAT,D <enter>

$PASHR,SAT

The response message is in the form:

$PASHR,SAT,d1,n(d2,d3,d4,f5,c)*cc <enter>

where n = the number of SVs tracked.

The elevation/azimuth prior to the first computed position may be erroneous if the last position

stored in battery back memory is very far from the current point.

Example:

Query: $PASHQ,SAT <enter>

Response:

$PASHR,SAT,04,03,103,56,50.5,U,23,225,61,52.4,U,16,045,02,51.4,U,

04,160,46,53.6,U*6E <enter>

Table 6.114: SAT Message Structure

Parameters Description Range

d1 Number of SVs locked 1 - 12

d2 SV PRN number, 1 - 32

d3 SV azimuth angle in degrees 0 - 359

d4 SV elevation angle in degrees 0 - 90

f5 SV signal/noise ratio in dB Hz 30.0-60.0

c SV used in position computation ’U’: used, ‘ -’ : not used ‘U’ / ‘-’

*cc checksum

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Ashtech Z-sensor Especificaciones Pagina 198