Quectel  L76B

 

 

integrated GPS with BeiDou system

 

 

Key benefits


●  Extremely compact size, 10.1 × 9.7 × 2.5mm

●  Multi-GNSS engine for GPS, BeiDou and QZSS

●  EASY™, self-generated orbit prediction for instant positioning fix

●  AGPS supports for fast TTFF

●  Ultra low tracking power consumption,18mA

●  Always Locate™, an intelligent algorithm for power saving

●  LOCUS, innate logger solution with no need for host and external flash

●  High sensitivity, -163dBm@Tracking, -148dBm@Acquisition

●  99 acquisition/33 tracking channels, up to 210PRN channels

●  Support DGPS, SBAS (WAAS/EGNOS/MSAS/GAGAN)

●  Anti-Jamming, Multi-tone Active Interference Canceller




Introduction

 

L76B, the smallest GNSS module, is a single receiver module integrated GPS with BeiDou system. It is pin to pin compatible with Quectel GNSS module L76 and provides simultaneous GPS and BeiDou open service L1 reception capability. With 33 tracking channels, 99 acquisition channels, and 210 PRN channels, L76B can acquire and track any mix of GPS and BeiDou signals.

 

Compared with using GPS only, enabling both GPS and BeiDou generally doubles the number of visible satellites, reduces the time to first fix and increases positioning accuracy, especially when driving in rough urban environments.

 

Combining advanced AGPS called EASY™ (Embedded Assist System) and proven AlwaysLocate™ technology, L76B achieves the highest performance and fully meets the industrial standard. Additional feature of embedded logger function called LOCUS allows L76B to log position information to internal flash memory at default intervals of 15 seconds and provides typically more than 16 hours log capacity without adding cost.

 

Its super performance makes L76B ideal for automotive, industrial PDA, consumer and industry applications. Extremely low power consumption makes it easier to be applied to power sensitive devices, especially portable applications.

 

Details

General Specifications

 

GPS L1 Band Receiver
(1575.42MHz)
BD2 B1 Band Receiver
(1561.098MHz)

Channel Number

33 (Tracking) /
99 (Acquisition)
Up to 210(PRN)

 

C/A Code

 

 

SBAS

WAAS, EGNOS, MSAS,GAGAN

 

Horizontal Position
Accuracy

Autonomous

<2.5m CEP

 

Velocity Accuracy

Without Aid

< 0.1m/s

 

Acceleration Accuracy

Without Aid

0.1 m/s2

 

Timing Accuracy

1PPS out

10ns

 

Reacquisition Time

 

<1s

 

TTFF@-130dBm
with EASYTM

Cold Start

<15s

 

Warm Start

<5s

 

Hot Start

<1s

 

TTFF@-130dBm
without EASYTM

Cold Start

<35s

 

Warm Start

<30s

 

Hot Start

<1s

 

Sensitivity

Acquisition

-148dBm

 

Tracking

-165dBm

 

Reacquisition

-160dBm

 

Environmental

Operating Temperature

-40℃ to 85℃

 

 

Storage Temperature

-45℃ to 125℃

 

Dynamic Performance

Maximum Altitude

Max.18000m

 

Maximum Velocity

Max.515m/s

 

Maximum Acceleration

4G

 

Dimensions

10.1 × 9.7 × 2.5mm

 

Weight

Approx. 0.6g

 

 

 

Serial Interfaces

 

Serial Interfaces

UART: Adjustable 4800~115200 bps
Default: 9600bps

 

Update Rate

1Hz (default), up to10Hz

 

I/O Voltage

2.7V ~ 2.9V

 

Protocols

NMEA 0183
PMTK

 

 

 

Power Management

 

Power Supply

2.8V ~ 4.3V

 

Power Acquisition

23mA (GPS+BeiDou)
21mA (GPS)

 

Power Tracking

18mA (GPS+BeiDou)
15mA (GPS)

 

Power Saving

Typ. 2.6mA@AlwaysLocate™(Note1)

 

 

7uA@Backup Mode

 

 

500uA@Standby Mode

 

 

Periodic Mode

 

Antenna Type

Active or Passive

 

Antenna Power

External or Internal VCC_RF

     Note1: Measured in GPS+BeiDou system under outdoor static mode.