Ingeniero

PMB-948 PRODUCT NAME

ISSUED DATE VERSION PAGE

2008/04/14 1.0 1/9

PUBLISHED BY Polstar Technologies Inc.

GPS Module

SPECIFICATION
SPEC NO. PART NO. PRODUCT NAME ： ： ： PMB-948 PMB-948 GPS Module / PMB-948

DESCRIPTION

：

GPS Module

REVISION STATUS VERSION 0.1 1.0 DATE 2008/04/14 2008/10/12 PAGE 7 REVISION DESCRIPTION Modification PREPARED DESIGNED APPROVED Ken Hung KenHung Ken Hung Ken Hung S. M. Wang S. M. Wang all pages New Issued

Prepared By

Designed By

Approved By

1 All right reserved by Polstar Technologies Corporation.

INDEX
Item No. 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 Cautions Features Normal Operating Conditions Specification Time To First Fix (TTFF) Interface Communication Specification LED Indication Module I/O Connector Pins NMEACommand Contents Page 3 4 4 4 5 5 5 5 5 6 9

Annex Appendix A. GPS Module-PC Board Dimension

PMB-948 PRODUCT NAME

ISSUED DATE VERSION PAGE

2008/04/14 1.0 3/9

PUBLISHED BY Polstar Technologies Inc.

GPS Module

1.0 Cautions GPS (Global Positioning System) is a satellite-based navigation system. In an unobstructed clear view of the sky, GPS works anywhere in the world, 24 hours aday. GPS is developed and operated by the government of United States. Under the policy of the government, the degradation in accuracy shall occur without prior warnings, and sometimes satellites don’t transmit signal due to adjustment, test, and orbital revision. Also, please note: 1. products such as motors, computer, and RF devices, which emit high levels of magnetic field and interference thatmay cause the performance of the GPS unit to drop. 2. the optimal position during automobile applications is on the roof top of the vehicles. If the GPS unit is to be placed inside the car, be certain to avoid coverage by metal objects for optimal performance. Please be aware that the performance of the GPS receiver module does not warrant against the above factors. (Position Accuracy) Positiondata and position accuracy are affected or degraded by the satellite geometry, electric magnetic interference, and multipath. (Equipment) The high frequency noise will interfere with signal receiving. The high frequency noise within the receiver frequency band, 1575Mhz ±10MHz, will affect the receiver quality. Also, because of the mixer and modulation, the low frequency noise will be increased byseveral times. If this increased frequency drops into the 1575MHz ±10MHz band, it will also affect the receiver quality.

(Warranty) If the product fails within one year after the date of delivery while it has been used properly it will be replaced or repaired free of charge.

3 All right reserved by Polstar Technologies Corporation.

PMB-948 PRODUCT NAME

ISSUED DATE VERSION PAGE2008/04/14 1.0 4/9

PUBLISHED BY Polstar Technologies Inc.

GPS Module

2.0 Features: Skytraq high sensitivity GPS chip set. 65-Channel GPS Receiver for fast acquisition and reacquisition. Surpport NMEA 0183 Built-in patch antenna Small size 41x41x18 mm

3.0 Normal Operating Conditions Symbol Parameter VCC Power Supply Voltage Pw Power Consumption(*1) Top Operating Temperature *1: PowerConsumption: Typical: 55mA @5V Min 3.0 ─ -20 Typ 3.3 85 25 Max 5.5 ─ 70 Units V mA °C

4.0 Specification Chipset Baud Rate

Skytraq 4800/9600/38400/115200 bps (Factory setting before shipping) 65 Parallel channels Center frequency Signal sensitivity Default Position Velocity 1575.42MHz L1 band, C/A code -160 dBm or less WGS-84 2.5m CEP 0.1m/s Average 18,000 meters(60,000 feet)max 515 meters/second(1000 kmots)max 1second －20℃ to 70℃ －30℃ to 85℃

Satellite Tracking RF input Positioning system Positioning accuracy

Altitude Velocity Navigation Update Rate Operation Temperature Storage Temperature

4 All right reserved by Polstar Technologies Corporation.

PMB-948 PRODUCT NAME

ISSUED DATE VERSION PAGE

2008/04/14 1.0 5/9

PUBLISHED BY Polstar Technologies Inc.

GPS Module...