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Falleaf,
Khi ban noi ve toc do, ban muon no'i ve cai nao. Ve GPS or ve cai board TTL/CMOS/RS232/GPS adapter board.
Cai board, ngoai viec co the ho tro cho cai GPS receive, cai board con co the dung de cung cap dien 3.3 V hay 5.0 V, va chuyen doi, hay ket noi cac he thong TTL<->CMOS<->RS232. Doc cai manual khong, thi hoi kho hieu, nhung khi thuc tap no voi cai board, thi cung khong den noi nao.
Gia cua cai adapterboard khoang 30$. Gia cua cai GPS receiver + Translation cable + Active attenna( giong nhu trong hinh) la khoang tu 70->80 $
Minh se update cai manual de co the ve du lieu cua GPS.
KEY FEATURES
• 12-channel simultaneous operation
• Ultra-low power consumption: less than 90 mW (27 mA) @ 3.3 V
• Dual sensitivity modes with automatic switching
• Aided GPS through TSIP
• Antenna open and short circuit detection and protection
• Compact size: 26 mm W x 26 mm L x 6 mm H
• Supports NMEA 0183, TSIP, TAIP, RTCM SC-104 protocols
• Trimble quality at low cost
PERFORMANCE SPECIFICATIONS
General L1 (1575.42 MHz) frequency, C/A code, 12-channel,
continuous tracking receiver
Update Rate TSIP @ 1 Hz; NMEA @ 1 HZ; TAIP @ 1 Hz
Accuracy Horizontal: <5 meters (50%), <8 meters (90%)
Altitude: <10 meters (50%), <16 meters (90%)
Velocity: 0.06 m/sec
PPS (static): ±50 nanoseconds
Acquisition (Autonomous Operation in Standard Sensitivity Mode)
Reacquisition: <2 sec. (90%)
Hot Start: <10 sec (50%), <13 sec (90%)
Warm Start: <38 sec (50%), <42 sec (90%)
Cold Start: <50 sec (50%), <86 sec (90%)
Cold start requires no initialization. Warm start implies last
position, time and almanac are saved by backup power. Hot
start implies ephemeris also saved.
Operational (COCOM) Limits
Velocity: 515 m/s
INTERFACE CHARACTERISTICS
Connectors I/O: 8-pin (2x4) 2 mm male header,
micro terminal strip
ASP 69533-01
RF: Low-profile coaxial connector
H.FL-R-SMT (10), 50 Ohm
Serial Port 2 serial ports (transmit/receive)
PPS 3.3 V CMOS-compatible TTL-level pulse,
once per second
Protocols TSIP, TAIP, NMEA 0183 v3.0, RTCM SC-104
NMEA Messages GGA, VTG, GLL, ZDA, GSA, GSV and RMC
Messages selectable by TSIP command
Selection stored in flash memory
ELECTRICAL CHARACTERISTICS
Prime Power +3.0 VDC to 3.6 VDC (3.3 V typ.)
Power Consumption Less than 90 mW (27 mA) @ 3.3 V
Backup Power +2.5 VDC to +3.6 VDC (3.0V typ.)
Ripple Noise Max 60 mV, peak to peak from 1 Hz to 1 MHz
Antenna Fault Protection Open and short circuit detection and protection
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature –40° C to +85° C
Storage Temperature –55° C to +105° 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, at +60° C
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