Product Manual

312
Query Command Library
$PASHS,NME,GRS,A,ON,0.5
GSA: GNSS DOP and Active Satellites
Function This command is used to output a GSA message containing
data related to DOP values and satellites used in the position
solution.
Command Format Syntax
$PASHQ,GSA[*cc]
Response Format Syntax
$--GSA,c1,d2,d3,d4,d5,d6,d7,d8,d9,d10,d11,d12,d13,d14,f15,f16,f17*cc
Parameters
Example $PASHQ,GSA
$GNGSA,A,3,20,11,13,23,17,04,31,,,,,,1.6,0.9,1.3*21
$GNGSA,A,3,81,83,68,,,,,,,,,,1.6,0.9,1.3*2C
Automatic Output
of GSA Messages
This is a reminder on how to output GSA messages at regular
intervals of time: Use the $PASHS,NME command with the
syntax below:
$PASHS,NME,GSA,<port_ID>,ON,<Rate>
Parameter Description Range
“$--GSA”
Header
$GPGSA: Only GPS satellites are used.
$GLGSA: Only GLONASS sats are used.
$GNGSA: Several constellations (GPS,
SBAS, GLONASS) are used.
$GPGSA,
$GLGSA,
$GNGSA
c1
Output mode:
• M: Manual
• A: Automatic
M, A
d2
Position indicator:
• 1: No position available
• 2: 2D position
• 3: 3D position
1-3
d3-d14
Satellites used in the position solution (blank
fields for unused channels)
GPS: 1-32
GLONASS: 65-96
SBAS: 33-64
f15 PDOP 0-9.9
f16 HDOP 0-9.9
f17 VDOP 0-9.9
*cc Checksum *00-*FF