M 2 M C o n t r o l
by Infranet Technologies GmbH
Ph: +49.40.69647-260
Tempowerkring 2
Fax: +49.40.69647-259
21079 Hamburg
Email:
Germany
Web: www.m2mcontrol.de
Technical Manual 1.05, C600 Professional
Page 22 of 24
Specifications for the 16-channel GPS receiver
u-blox LEA-4A
General:
16
Channels
simultaneous operation
DGPS
capable
L1 frequency (1575.42MHz)
C/A code (Standard Positioning Service)
Continuous tracking receiver
Update Rate:
NMEA @ 1 Hz
Accuracy: Position
2.5m
CEP
DGPS/SBAS 2.5m CEP
1
Acquisition: Autonomous
Operation
in Standard Sensitivity Mode
Reacquisition <1 sec.
Hot Start
< 3.5 sec.
Warm start
33 sec.
Cold start
34 sec.
Interface protocol:
NMEA 0183 v3.0 with GGA, VTG, GLL, GSA, GSV and RMC
Defintions:
Cold Start:
The GPS has no valid navigation data.
Warm Start:
The GPS has been powered down for more than one hour, but has stored information about its current position and time
Hot Start:
The GPS has been powered down for less than 2 hours and the stored position and time are valid
Reacquisition:
Time to get a fix if the signal has been blocked for a short period of time.
1
Depends on accuracy of correction data provided by the DGPS or SBAS service
This feature is currently not supported in the firmware.
