User's Manual

Lassen LP GPS
Low power module for portable applications
PHYSICAL CHARACTERISTICS
Dimensions 2.605″ L × 1.250″ W × 0.475″ H
(66.167mm × 31.750mm × 12 mm)
Weight 0.4oz. (12.5grams)
Connectors RF: right angle MCX
Power, I/O: 8-pin (2 × 4), 2mm header
ACCESSORIES
GPS antenna Compact, 3.3V active micropatch
antenna with 5-meter cable and magnetic mount.
1.65″ × 1.99″ × 0.55″ high
(42mm × 50.5mm × 13.8 mm)
ORDERING INFORMATION
Module
Lassen LP GPS Module, Extended Temperature, TSIP (binary) protocol,
NMEA 0183 (ASCII) protocol and TAIP (ASCII) protocol, DGPS ready
Antennas
3.3V antenna, 5-meter cable with MCX connector
Starter Kit
Includes Lassen LP GPS module mounted on interface motherboard in a
durable metal enclosure with dual DB9, RS232 interface, AC/DC power
converter, magnetic-mount 3V antenna, TSIP, NMEA and TAIP protocols,
software toolkit for TSIP, interface cable and manual.
Manual
Lassen LP GPS Module System Designer Reference Guide
© Copyright 1999, Trimble Navigation Limited. All rights reserved. The Trimble logo with Trimble is a trademark of Trimble Navigation Limited registered in the United States Patent and Trademark Office. Lassen and Schedule Track are trademarks of Trimble Navigation Limited. All other marks are the property of their respective owners. TID11547C (11/99)
PERFORMANCE SPECIFICATIONS
General L1 frequency, C/A code (SPS), 8-channel,
continuous tracking receiver, 32 correlators
Update rate TSIP @ 1Hz
NMEA @ 1Hz
TAIP @ 1 Hz
Accuracy
Position
25m CEP (50%) w/o SA
Velocity 0.1m/sec without SA
Time ±95 nano-seconds (over-determined clock mode)
DGPS accuracy
Position
2m CEP (50%)
Velocity 0.05m/sec
Acquisition (typical) Cold start*: <130 seconds (90%)
Warm start**: <45 seconds (90%)
Hot start***: <20 seconds (90%)
Reacquisition after signal loss <2 seconds (90%)
Dynamics
Acceleration
4g (39.2 m/sec
2
)
Motional Jerk 20m/sec
3
Operational limits Altitude <18,000m or velocity <515 m/sec
either limit may be exceeded but not both
ENVIRONMENTAL SPECIFICATIONS
Operating temp –40°C to +85°C (standard)
Storage temp –55°C to +100°C
Vibration 0.008g
2
/Hz 5Hz to 20 Hz
0.05g
2
/Hz 20Hz to 100 Hz
–3dB/octave 100Hz to 900 Hz
Operating humidity 5% to 95% R.H. non-condensing, +60°C
Altitude –400 m to +18,000m
TECHNICAL SPECIFICATIONS
Prime power +3.3V DC, ±0.3V
Power consumption
Normal operation
GPS board only: 55mA, 0.182W
with antenna: 67mA, 0.221W
Deep sleep 8mA, board only
Backup power +3.0 to +3.6V DC
2–5
µA at +25°C (nominal)
Serial ports/1PPS CMOS TTL levels
I/O Protocols TSIP (binary data)
NMEA 0183 v2.1 (ASCII data)
TAIP (ASCII data)
NMEA messages GGA, VTG, GLL, ZDA, GSA, GSV and RMC
messages selectable by TSIP command;
selection stored in non-volatile memory.
Antenna power 3.3V at 12mA, feedline fault detect/protect
* Cold start requires no initialization
** Warm start implies last position, time and almanac are saved in battery-backed memory
*** Hot start implies ephemeris also saved.
All GPS receivers are subject to degradation of position and velocity accuracies under
Department of Defense imposed Selective Availability (SA).
Visit our website at
www.trimble.com/oem
Specifications subject to change without notice.
Trimble Navigation Limited
Corporate Headquarters
645 North Mary Avenue
Sunnyvale, CA 94086
[phone]
[phone] Fax
www.trimble.com
Trimble Navigation Europe Limited
Trimble House
Meridian Office Park
Osborne Way
Hook, Hampshire RG27 9HX U.K.
[phone]
[phone] Fax
Trimble Navigation
Singapore PTE Limited
79 Anson Road #05-02
Singapore 079906
SINGAPORE
[phone]
[phone] Fax