PDF GNS1001 Data sheet ( Hoja de datos )

Número de pieza	GNS1001
Descripción	GPS Module
Fabricantes	GNS
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No Preview Available ! GPS Module GNS 1001 Datasheet V1.2 confidential information preliminary specification 1 INTRODUCTION The GNS1001 module utilizes the new generation MediaTek MT3339 GPS chip.The navigation performance and accuracy is further improved by using correction data from SBAS (WAAS, EGNOS, GAGAN, MSAS),QZSS or connectivity to DGPS(RTCM format). First Fixes after just a few seconds are achieved with the help of A-GPS using EPOTM ( Extended Prediction Orbit) and the EASYTM “self generated orbit prediction” algorithm. EASYTM (Embedded Assist System) does not require any resources or assist data from the host. The excellent low power design makes it easy to implement this module in power sensitive, battery supplied applications. The new AlwaysLocateTM power management feature will improve this behaviour additionally. It adaptively adjusts power consumption depending on the environment and motion conditions, in order to achive a balance between fix rate, power consumption and position accuracy. Very low power requirements (typ 49mW@ 3.3V) and internal voltage regulator makes it easy to run the module with various power supplies and allows direct connection to LiIon batteries. GNS1001 offers the industry’s highest level of navigation sensitivity up to -165dBm. It has superior dynamic performance at high velocity and provides effective protection against interference signals using MTAICTM ( Multi-tone active interference canceller). Up to 12 independent channel interference continious wave jammers <-80dBm can be eliminated or reduced. The embedded logger function LOCUS with a 16-hrs on chip memory makes this GPS module a complete track logger for many applications. With AlwaysLocateTM data logging can be achieved up to 32-hrs under standard conditions. In professional timing applications the outstanding high accuracy PPS (pulse per second) hardware pin is used for synchronization to GPS second. Typical accuracy is 10ns. © GNS-GmbH 2012 V 1.2, Mar 13th 2013 1 1 page GPS Module Datasheet V1.2 GNS 1001 confidential information preliminary specification 3.3 Power management features Power management schemes implemented for any GPS system requires an optimally tuned performance for both accuracy of the position fixes and the average power consumed for best user experience. GNS1001 architecture achieves both these aspects by providing flexibility and design choices for the system integration based on wide range of use cases and by leveraging on the proven silicon methodologies. Also GNS1001 provides position, velocity and time measurements without any host loading. This, coupled with the optional built-in power management options, reduces the overall system power budget. Power management features: In Standby mode RF frontend and internal MPU are switched to deep sleep state. Power consumption is reduced to 0.63 mW (190µA).This state can be entered by sending the NMEA command: $PMTK161,028<CR><LF>. Leaving standby mode and resuming to normal operation will be managed by sending any byte to the module. Backup mode can be entered by sending NMEA command: $PMTK225,42F<CR><LF>. The GPS core will shut down autonomously to backup state, Vcc supply can now be switched off by an external power supply switch. Periodic mode describes a power mode, which will autonomously power on/off the module in programmable time slots with reduced fix rate. Periodic mode is useful during stationary operation or if position fixes are just needed from time to time. Since power consumption in GPS off times is nearly zero, the power consumption in periodic mode can be estimated by Ptracking * (ton/(ton+toff)). Periodic mode is controlled with NMEA command $PTMK225. See document NMEAcommandInterface manual for programming details. © GNS-GmbH 2012 V 1.2, Mar 13th 2013 5 5 Page GPS Module GNS 1001 Datasheet V1.2 confidential information preliminary specification 3.19 Module default settings The 1001 module comes with default settings, which are persistently programmed. Whenever power is removed from the module (both Vcc and VBACKUP), the settings will be reset to the values shown in the following table. Setting UART setting Fix frequency (update rate) NMEA sentences NMEA rate Self survey prediction mode EASYTM Active interference cancellation MTAICTM DGPS option Datum PPS pulse output length Logging parameters Single sentence output Last position retention Magnetic variation Geofencing function Distance calculation High altitude unlimiter NMEA output sentences Default value 9600,8,N,1 1/sec $GPRMC,$GPGSA,$GPGSV,$GPVTG,$GPGGA Once a second: RMC,GSA,VTG,GGA every 5 sec :GSV enabled enabled SBAS enabled WGS 84 100ms Full&Stop / Content Basic / Interval 15 sec Customized firmware needed Customized firmware needed Customized firmware needed Customized firmware needed Customized firmware needed Customized firmware needed On request, other options can be selected as preprogrammed (persistent default) options. Please contact the GNS support for your project requirements. Note : Customized options are solely available for fixed order lots. 4 TYPICAL APPLICATION BLOCK DIAGRAM 4.1 Typical System overview Mobile device 3.3V Power Management GNS 1001 UART RX UART TX Host Processor MMI (keys, display) 11 © GNS-GmbH 2012 V 1.2, Mar 13th 2013 11 Page

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