Users manual
Appendix A
Revision #:
A
Date:
07-14-15
Page
19
of
58
GNSS
–
Satellite System Configuration
△
4
△
8
Format:
$PERDAPI , GNSS , talkerID , gps , glonass , galileo , qzss , sbas *hh <CR> <LF>
1
2
3
4
5
6
7
Num
Contents
Range
Default
Remark
1
GNSS
-
-
Command Name
2
talkerID
AUTO,
LEGACYGP
or GN
△
8
AUTO
AUTO: GLGSV is omitted in case of no glonass.
GPGSV is omitted in case of no GPS, SBAS and
QZSS.
LEGACYGP: GL and GN sentence is omitted.
GN: GLGSV is output even if no glonass. GPGSV is
output even if no GPS, SBAS and QZSS.
3
gps
0 or 2
2
GPS mode
△
3
4
glonass
0 or 2
2
Glonass mode
△
3
5
galileo
0
0
Galileo mode (
unimplemented)
6
qzss
0 or 2
2
Qzss mode
△
3
7
sbas
0, 1 or 2
1
Sbas mode
△
2
Example:
$PERDAPI,GNSS,AUTO,2,2,0,2,2*41
Use: GPS, GLONASS, QZSS, SBAS
Mask: Galileo
Notes:
△
4
-
This command controls which Global Navigation Satellite Systems are used by the receiver.
The mode can be set to 0 or 2 for each satellite system. User can also set SBAS mode to 1.
Mode 0 means to disable the system.
Mode 1 means to enable tracking only (do not use in position fix etc).
Mode 2 means to enable tracking and use the in position fix calculation.
-
In GT-87, default setting of SBAS mode is 1, because to use calculation data of SBAS tends to
reduce the accuracy of 1PPS. Therefore although GT-87 becomes to differential fix, SBAS is not
appeared in GSA sentence in default setting.
-
The response which is inserted current value to each field is obtained by receiving an effective
command for setting or inputting a command which is omitted the fields after Command Name, that
is, $PERDAPI,GNSS,QUERY*18.
-
“Sbas only configuration” and “No tracking configuration” are not accepted.
$PERDAPI,GNSS,AUTO,0,0,0,0,2*43
$PERDAPI,GNSS,AUTO,0,0,0,0,1*40
$PERDAPI,GNSS,AUTO,0,0,0,0,0*41
- Cold restart (time also be cleared) is run when satellite system configuration is changed from/to
glonass only fix configuration. In the others configuration, hot restart is run.
