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Quick Details

  • Place of Origin: Taiwan
  • Brand Name: Leadtek
  • Model Number: LR9131

Packaging & Delivery

Packaging Details: 1000PCS/reel

GPS Module LR9131 SiRF Star IV GPS Receiver Module

Features:

-SiRF StarIV ultra low power single chipset

-Compact module size for easy integration : 15 x 14 x 2.8 mm

-I2C/SPI pins reserved for customizing special user applications (Default: UART)

-Fully utilized SS4 upgrade features

 

Introduction

The Leadtek LR9131 GPS module is a high sensitivity, low power, Surface Mount Device (SMD) that fully utilized SiRFstarIV upgrade features. This 48-channel global positioning system (GPS) receiver is designed for a wide range of OEM applications and is based on the GPS signal search capabilities of the SiRFstarIV GSD4e chipset, SiRF’s newest chipset

technology. The LR9131 provides flexible I/O interfaces (UART is default, I2C and SPI by customer requirement).

The LR9130 is designed to allow quick and easy integration into GPS-related applications such as:

-PDA, Pocket PC, Tablet and other portable and battery drive computing devices

-Fleet Management / Asset Tracking

-AVL and Location-Based Services

-Hand-held Device for Personal Positioning and Navigation

 

Features

Hardware and Software

-Based on the high performance features of the SiRF Star IV low power single chipset.

-Built-in high gain amplifier and bandpass filter

-RoHS compliant (lead-free)

-Compact module size for easy integration: 15x14x2.8 mm (590.6x551.2x110.2 mil)

-SMT pads allow for fully automatic assembly processes equipment and reflow soldering

 

Performance

-Highest performance GPS PVT Engine.

-High acquisition sensitivity for fast TTFF

-Extremely low weak signal tracking sensitivity

-High jamming immunity

-Smallest footprint and total solution size

-Highest level of BOM integration

-Value added software enhancements

-Multimode A-GPS (Autonomous, MS-Based, and MS-Assisted) – Need operator support

-Embedded CGEE / SGEE (Need server support)

-SiRFGeoRecovTM Reverse EE

-Cold/Warm/Hot Start Time: 35/35/1 sec. at open sky and stationary environments

-Reacquisition Time: 0.1 second

-RF Metal Shield for best performance in noisy environments

 

Specification

Feature

Content

Description

Chipset

GSD4e

SiRF starIV low power single chipset

General

Frequency

L1, 1575.42 MHz

C/A code

1.023 MHz chip rate

Channels

48

Sensitivity

-163 dB

Accuracy

Position

<2.5 meters

Velocity

0.01 meters/second

Time

1 microsecond synchronized to GPS time

Datum

Default

WGS-84

Other

Selectable for other Datum

Time to First Fix

(TTFF/-122dBm)

(Open Sky &

Stationary

Requirements)

Reacquisition

0.1 sec., average

Snap start

1 sec., average

Hot start

1 ~ 2 sec.

Warm start

9 ~ 15 sec.

Cold start

25 ~ 35 sec.

Dynamic

Conditions

Altitude

18,000 meters (60,000 feet) max.

Velocity

515 meters/second (1000 knots) max.

Acceleration

4g, max.

Jerk

20 meters/second3, max.

Power

Main power input

1.71 ~ 1.89 VDC input

Power Consumption

41mA (Tracking Mode)

Backup Power

1.71 ~ 1.89 VDC input

Serial Port

Electrical interface

Protocol messages

Default UART:NMEA-0183@4800bps

(I2C TBA)

 

External GPS Antenna : Ct-6180 SMA 180D 5M

 

 

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