LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi District, New Taipei City 221, Taiwan
℡ 886-2-8698-3698
886-2-8698-3699
www.locosystech.com
Page
13/20
© 2006 LOCOSYS Technology Inc.
After the GPS module is changed to higher baud rate or reduced NMEA sentence, the user
can configure it to high update rate of position fix by the following commands.
Interval of position fix Software command
Every 100ms (10Hz)
(1)
$PMTK220,100*2F<CR><LF>
Every 200ms (5Hz) $PMTK220,200*2C<CR><LF>
Every 500ms (2Hz) $PMTK220,500*2B<CR><LF>
Every 1000ms (1Hz) $PMTK220,1000*1F<CR><LF>
Every 2000ms (0.5Hz)
(2)
$PMTK220,2000*1C<CR><LF>
If the command is correct and executed, GPS module will
output message $PMTK001,220,3*30<CR><LF>
Note 1: The minimum interval of position fix is 100ms, i.e. the maximum update rate is 10Hz.
Note 2: The current consumption is the same with the update rate of 1Hz.
6 LED indicator
The red LED is an indicator of GPS positioning status.
In continuous power mode, it flashes once
per second when position is fixed. Otherwise it is off. The timing in detail is as below.
Fig 6.1 LED indicator of GPS positioning status
