Instruction manual

Page 116 Z-12 Real-Time Sensor Operation and Reference Manual
NMEA SAT (Satellite Status) Message
$PASHS,NME,SAT
This command enables/disables the satellite status message. The srructure is
$PASHS,NME,SAT,x,y
where x is the output port A, B, or C, and y is ON or OFF.
Example: Enable SAT message on port B
$PASHS,NME,SAT,B,ON followed by output command
$PASHS,OUT,x,NMEA where x is the output port.
$PASHQ,SAT
The associated query command is $PASHQ,SAT.
$PASHR,SAT
The response is a satellite status response message in the form:
$PASHR,SAT,qq,pp,aaa,ee,ss,h*cc
The SV-locked item is followed by as many groups of the follow ing items as there are SVs currently
being tracked: PRN number, azimuth, elevation, signal strength, and whether SV is used in position
fix solution; qq indicates the total number of SVs in the message. Table 4.65 defines each field of the
message.
Example 1:
0001.3 Vertical position error in meters
76 Message checksum in hexadecimal
Table 4.65: SAT Structure
Field Description
qq Number of SVS locked, number of SVs in message, range 0-12
pp SV PRN number, range 1 to 32
aaa SV azimuth angle, 000 to 359 degrees
ee SV elevation angle, 00 to 90 degrees
ss SV signal strength/signal-to-noise ratio, 00 to 99
h SV used/not used if position computation U = SV used in position computation
- = SV not used in position computation
Table 4.64: Typical RRE Response (continued)
Item Description