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Trimble Lassen LP

Low Power GPS Interface Module For Portable Applications

Ideal Solution For Mobile Applications

		3.3V for battery powered apps 0.2 watt power consumption Operating temp -40° to +85°C Next-generation RF technology Programmable power management Sized for portable devices TSIP , TAIP & NMEA protocols Different antennas available Starter kit available Datasheet/Manual: Datasheet in PDF format Manual in PDF format

Introduction

Trimble's Lassen LP GPS is a low power miniature GPS receiver module that is ideal for power-conscious portable applications. It is intended specifically for system designers and integrators
who are developing the next generation of portable devices. This embedded technology gives the
system developer the programming flexibility to achieve a significant reduction in power consumption.

Power management

The Lassen LP GPS features a new set of power management tools that puts the power budget decision
in the developer's hands. The developer now can determine the best balance between operational
frequency and power conservation for a particular application. In Schedule Track operating mode, the developer can program the unit to power up, quickly acquire satellites and output position to a schedule. After gathering satellite data and computing its location, the receiver may be directed to power down to a minimal mode of operation for a programmed interval or until awakened by a hardware interruption.

Ease of integration

Lassen LP GPS provides a choice of data protocols for maximum flexibility. The TSIP binary data protocol incorporates new power management features and provides maximum control over system operation. The TAIP and NMEA protocols are available where ASCII data is preferred. A secondary serial input port is available for RTCM SC-104 differential correction data for high accuracy applications.

The Lassen LP GPS also incorporates Trimble's antenna detection and protection circuit to monitor the condition of the antenna system. And high performance, miniature 3.3 V antennas are available for the Lassen LP GPS.

Getting Started

The Lassen LP Starter Kit provides everything you need to get started integrating state-of-the-art GPS capability into your application.

Specification
Performance:
General:	L1 frequency, C/A code (SPS), 8-channel, continuous tracking receiver, 32 correlators
Update rate:	TSIP @ 1 Hz NMEA @ 1 Hz TAIP @ 1 Hz
Accuracy:	Horizontal: <6 meters (50%); <9 meters (90%) Altitude: <11 meters (50%); <18 meters (90%) Velocity: 0.06 m/sec PPS: ± 95 nanoseconds
DGPS accuracy:	Position 2 m CEP (50%) Velocity 0.05 m/sec (1 Sigma)
Acquisition:	Hot Start: < 15 seconds (90%) Warm Start: < 42 seconds (90%) Cold Start: < 130 seconds (90%) Cold start requires no initialization. Warm start requires last position, time and almanac saved in battery back-up memory. Hot start requires that the ephemeris also saved.
Reacquisition:	< 2 seconds (90%) (after signal loss)
Dynamics:	Acceleration 4 g (39.2 m/sec2) Motional Jerk 20 m/sec3
Operational limits:	Altitude <18,000 m or velocity < 515 m/sec
Environmental:
Operating temp:	– 40°C to +85°C (standard)
Storage temp:	–55°C to +100°C
Vibration:	0.008 g2/Hz 5 Hz to 20 Hz 0.05 g2/Hz 20 Hz to 100 Hz –3 dB/octave 100 Hz to 900 Hz
Operating humidity:	5% to 95% R.H. non-condensing, + 60°C
Electrical:
Prime power:	+3.3 V DC, ± 0.3 V
Power consumption:	Normal operation . GPS board only: 55 mA, 0.182 W . with antenna: 67 mA, 0.221 W Deep sleep 8 mA, board only
Backup power:	+3.0 to +3.6 V DC 2–5 µA at +25°C (nominal)
Serial ports/1PPS:	CMOS TTL levels
Supported Protocols:	TSIP @ 9600 baud, 8-Odd-1 (configurable) TAIP @ 4800 baud, 8-None-1 (configurable) NMEA 0183 v2.1 @ 4800 baud, 8-None-1 (configurable) RTCM SC-104 @ 4800 baud, 8-None-1
NMEA messages:	GGA, VTG, GLL, ZDA, GSA, GSV and RMC Messages selectable by TSIP command Selection stored in non-volatile memory.
Antenna power:	3.3 V at 12 mA Open-circuit detection Short-circuit protection
Interface Characteristics:
Dimensions:	2.605? L × 1.250? W × 0.475? H (66.167 mm × 31.750 mm × 12 mm)
Weight:	0.4 oz. (12.5 grams)
Connectors:	RF: right angle MCX Power, I/O: 8-pin (2 × 4), 2 mm header
Other:
Dimensions:	2.605" L × 1.250" W × 0.475" H (66.167 mm × 31.750 mm × 12 mm)
Weight:	0.4 oz. (12.5 grams)
Connectors:	RF: right angle MCX Power, I/O: 8-pin (2 × 4), 2 mm header
ROHS Status:	This product is lead free/ROHS compliant.

Accessories

Bullet III Antenna
Designed for fixed mounting via standard 3/4" pipe thread
Optional cable and adapters available
35 dB ± 3 dB gain
Dimensions: 77.5 mm x 66.2mm
Weight: 170g
Part number:
57861-00 BULLET III 3.3V TNC
This product is lead free/ROHS compliant.

See here for more details

Miniature 3.3V GPS Antenna (packaged)
Compact, active micropatch antenna with 5-meter cable
MCX or SMA connector
Magnetic mount
28dB gain
3.0 to 3.6V operation
Dimensions: 30.8mm L x 35.8 mm W x 11.8 mm H
Weight: 100g with cable
Part number - 56237-50 (MCX connector)
Part number - 56237-52 (SMA connector)
This product is lead free/ROHS compliant.