US Robotics Courier USR3500 Reference Manual page 36

Courier m2m 3g cellular modem

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Reference Guide

3.2.2.3.3.

• Leading A-GPS performance

Exceeds 3GPP RAN 4 AGPS performance specification

• -153 dBm cold start sensitivity

• -155 dBm tracking sensitivity

• < 5 second average cold start TTFF in open sky (UE-based)

• < 3 second average super hot TTFF in open sky

• < 2 m accuracy in open sky 1 Hz tracking with CEP-50

• UMTS Control Plane (CP) – UE-assisted and UE-based

• GSM Control Plane (CP) – UE-assisted and UE-based

3.2.2.3.4.

• Provides leading performance in car and walking navigation modes as well as

accuracy while stationary

• Airline/Game/Offline mode

• GPS capability is available while phone is offline

3.2.2.3.5.

Supported sentences: GGA, GSA, GSV, RMC, VTG

3.2.2.3.6.

The USR3500 provides bias for active antenna, which can be enabled or disabled

using GPIO44. Note that GPIO44 needs to be at high level for antenna bias to be

activated.

A-GPS Features

Enhanced Navigation 2.0 Feature

NMEA

Active GPS Antenna Bias

Rev 1.0

Interfaces

1/27/14

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