Holux GR-211, User Manual

Page: 5 / 19

HOLUX
3
1. Introduction
1.1 Overview
The HOLUX GR-211 Smart GPS Receiver is a total solution GPS receiver, designed based on SiRF Star II
Architecture. 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 dual-channel through RS-232 or TTL and saves
critical satellite data by built–in backup memory. With low power consumption, the GR-211 tracks up to 12
satellites at a time, re-acquires satellite signals in 100 ms and updates position data every second.
Trickle-Power allows the unit operates a fraction of the time and Push-to-Fix permits user to have a quick
position fix even though the receiver usually stays off.
1.2 Features
The GR-211 provides a host of features that make it easy for integration and use.
1. Builds on SiRF Star
II /LP chipset with embedded ARM7TDMI CPU available for customized applications in
firmware.
2. High performance receiver tracks up to 12 satellites while providing first fast fix and low power
consumption.
3. Differential capability utilizes real-time RTCM corrections producing 1-5 meter position accuracy.
4. Compact design ideal for applications with minimal space.
5. Dual communication channels and user selectable baud rates allow maximum interface capability and
flexibility.
6. Optional communication levels, RS-232 and TTL meet ordinary application and new fashions of connecting
PDA with TTL or RS-232 output.
7. FLASH based program memory: New software revisions upgradeable through serial interface.
8. LED display status: The LED provides users visible positioning status. LED “ON” when power connected
and “BLINKING” when GR-211 got positioned.
9. Built-in hardware tracking Loop Processor WAAS/EGNOS Demodulator.
10. High speed signal acquisition using 1920 time/frequency search channels.
11. Built-in rechargeable battery for memory and RTC backup and for Fast Time to First Fix (TTFF). The
battery is recharged during normal operation.
12. Support NMEA 0183 V2.2 data protocol.
13. Enhanced algorithms provide superior navigation performance in urban canyon and foliage environments.
14. Water proof design for industry standard.
15. Low power consumption and ultra mini size.
1.3 Technology specifications
1.3.1 Physical Dimension
Single construction integrated antenna/receiver.
GR-211H Size: 43.5 (L) x 34.8 (W) x 13.9 (H) mm.
1.71"(L) x 1.37"(W) x 0.55"(H) inch.
GR-211P Size: 43.8 (L)
×
36.9 (W)
×
13.9 (H) mm.
1.73”(L) x 1.45”(W) x 0.55”(H) inch.
1.3.2 Environmental Characteristics
1) Operating temperature: -40
o
C to +80
o
C(internal temperature).
2)
Storage temperature: -45
o
C to +100
o
C
.
1.3.3 Electrical Characteristics
1) Input voltage: +4.5 ~ 5.5 VDC without accessories.
2) Backup power: 3V Rechargeable Lithium cell battery, up to 500 hours discharge.
1.3.4 Performance
1) Tracks up to 12 satellites.