IP Mobilenet M64780D25 High Speed Mobile Radio User Manual 3

IP Mobilenet, LLC High Speed Mobile Radio Users Manual 3

Users Manual 3

Trimble
Key Features
and Benefits
• 3.3V for battery
powered applications
• Programmable power
management
• Sized for portable
devices
Lassen LP GPS
Low power module for portable applications
Trimble’s new Lassen™LP GPS
is a low power miniature GPS
receiver module that is ideal for
power-conscious portable appli-
cations. It is intended specifically
for system designers and integra-
tors 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 deter-
mine the best balance between
operational frequency and power
conservation for a particular
application.
In Schedule Track™ operat-
ing mode, the developer can
program the unit to power up,
quickly acquire satellites and out-
put position to a schedule. After
gathering satellite data and com-
puting 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. Schedule Track
provides hot start performance
at a programmed interval or in
response to a hardware event.
Schedule Track mode provides
an advantage over normal
battery-backed fast start
modes with automatic wakeup
to maintain current satellite
data for fastest possible
acquisition. Schedule Track
offers the lowest power
consumption in a deep sleep
mode but provides position
data as quickly as possible
when needed.
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 a new high
performance, miniature 3.3 V
antenna is available for the
Lassen LP GPS.
Getting started
The Starter Kit makes it easy to
evaluate the Lassen LP GPS and
begin development.
Actual size
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. (12.5 grams)
Connectors RF: right angle MCX
Power, I/O: 8-pin (2 ×4), 2 mm 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/sec2)
Motional Jerk 20m/sec3
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 0.008g2/Hz 5Hz to 20 Hz
0.05g2/Hz 20Hz to 100 Hz
–3dB/octave 100Hz to 900 Hz
Operating humidity 5% to 95% R.H. non-condensing, +60°C
Altitude –400m 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
2–5µA 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
+1-408-481-8940
+1-408-481-7744 Fax
www.trimble.com
Trimble Navigation Europe Limited
Trimble House
Meridian Office Park
Osborne Way
Hook, Hampshire RG27 9HX U.K.
+44 1256-760-150
+44 1256-760-148 Fax
Trimble Navigation
Singapore PTE Limited
79 Anson Road #05-02
Singapore 079906
SINGAPORE
+65-325-5668
+65-225-9989 Fax

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