GPS Receiver User's Guide E-705

Rikaline
Rikaline Marketing Corp. 5F-1, 125, Roosevelt Road, Sec. 5, Taipei, Taiwan 116
Tel: ++886 2 2934 5456 Fax: ++886 2 2934 4373 E-Mail: [e-mail]
web: www.rikaline.com.tw
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1. Introduction
1.1 Overview
The E-705 GPS Receiver integrated antenna is a total solution GPS receiver, designed based on EVERMORE
on-chip hardware tracking loops technique for use in a wide range of application. This positioning application
meets strict needs such as car navigation, mapping, surveying, security, agriculture and so on. Only clear view
of sky and certain power supply are necessary to the unit. It communicates with other electronic utilities via
compatible RS-232. With low power consumption, the E-705 tracks up to 12 satellites at a time, re-acquires
satellite signals in 100 ms and updates position data every second. The fast time-to-first-fix (TTFF) allows the
unit operates with low power consumption.
1.2 Features
The E-705 provides the following features:
1. Fast TTFF and low power consumption.
2. High performance receiver tracks up to 12 satellites.
3. Supports NMEA-0183 protocol.
4. Compact design ideal for applications requiring small space.
5. Optimized for navigation in urban-canyon environments.
6. Automatic cold start with no user initialization required.
7. Water resistance.
1.3 Technology specifications
1.3.1 Physical Dimension
Single construction integrated antenna/receiver.
Size: 46.0(W) x 31.0 (D) x 15.6(H) (mm)
1.81"(W) x 1.22"(D) x 0.61"(H).
1.3.2 Environmental Characteristics
1) Operating temperature: -20
o
C to +75
o
C(internal temperature).
2) Storage temperature: -55
o
C to +90
o
C.
1.3.3 Electrical Characteristics
1) Input voltage: +3.3 ~ 5.5 VDC.
2) Power consumption:
100mA w/o power saving
<80mA with power saving
1.3.4 Performance
1) Tracks up to 12 satellites.
2) Update rate: 1 second.
3) Acquisition time
Reacquisition 0.1 sec., averaged
Interrupted Repositioning 8 sec., averaged
Ephemeris update 40 sec., averaged
4) Position accuracy:
Position 5-25 meter CEP without SA
Velocity 0.1 meters/second, without SA
Time 1 microsecond synchronized GPS time
5) Dynamic Conditions:
Altitude 18,000 meters (60,000 feet) max