General |
Chipset |
MTK MT3339 |
Frequency |
L1, 1575.42MHz |
C/A Code |
1.023 MHz |
Channels |
66 channels |
SBAS |
WAAS, EGNOS, GAGAN,MSAS Supported |
Datum |
WGS84(Default), Tokyo-M, Tokyo-A, User Define |
CPU |
ARM7EJ-S |
MTTF (mean time to failure) |
>10 years |
Dimensions |
Length/Width/Height |
15*14*2.55 mm |
Weight |
2 g |
Performance Characteristics |
Position Accuracy |
Without aid:3.0m 2D-RMS |
< 3m CEP (50%) without SA (horizontal) |
DGPS (RTCM, SBAS (WAAS, EGNOS, MSAS)):2.5m |
Velocity Accuracy |
Without aid:0.1 m/s |
DGPS (RTCM, SBAS (WAAS, EGNOS, MSAS)):0.05m/s |
Acceleration Accuracy |
Without aid:0.1 m/s² |
DGPS (RTCM, SBAS (WAAS, EGNOS, MSAS)):0.05m/s² |
Timing Accuracy |
10 ns RMS |
Sensitivity |
Acquisition:-148dBm (Cold Start) |
Reacquisition:-163dBm |
Tracking:-165dBm |
Maximum Update Rate |
Up to 10Hz(Default: 1Hz) |
Acquisition (Open sky, stationary) |
Reacquisition Time |
Less than 1 second |
Hot start |
1.0s (Typical) |
Warm start |
34s (Typical) |
Cold start |
35s (Typical) |
Dynamic |
Altitude |
Maximum 18,000m |
Velocity |
Maximum 515m/s |
Acceleration |
Maximum 4G |
Power |
Input Voltage |
DC 3.3V Typical |
Power Consumption @ 3.3V |
Acquisition:26mA Typical |
Tracking:22mA Typical |
I/O |
Signal Output |
TTL level, 8 data bits, no parity, 1 stop bit |
Available Baud Rates |
4800/9600/38400/57600/115200 bps(Default:9600) |
Protocols |
NMEA 0183 v3.01 (Default:GGA,GSA,GSV,RMC,VTG)
RTCM
MTK NMEA Command
Network Assistance Messages |
Data output Interface |
TXDA/RXDA |
Function: NMEA output and PMTK command input |
Setting: 9600 bps/8/N/1 |
Data: GGA(1sec),GSA(1sec),GSV(1sec),RMC(1sec) |
Default Setting |
DGPS |
SBAS* |
Datum |
WGS84 |
Environment |
Operating Temperature |
-45 ℃ to 85 ℃ |
Storage Temperature |
-50 ℃ to 125 ℃ |
Operating Humidity |
5% to 95% (no condensing) |