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1.3.1
Specifications
General specifications:
GPS Receiver
Chip
Frequency
Support Channel
Position Accuracy
Max. Altitude
Max. Velocity
Acquisition Time
Sensitivity
Protocol Support
GPS Antenna (default)
Length
Frequency Range
Gain
Output Impedance
VSWR
GPS Output
1 PPS
RS-232 Interface
LED Indicators
Power/Communication
GPS
Power
Protection
Frame Ground for ESD
Protection
Required Supply Voltage
Power Consumption
Mechanical
Dimensions (W x H x D)
Weight
Housing
MediaTek solution
L1 1575.42 MHz, C/A code
32
Capable of SBAS (WAAS, EGNOS, MSAS)
<18,000 m
<515 m/s
Cold Start (Open Sky) = 42 s (typical)
Tracking=Up to -158 dBm
Cold start=Up to -142 dBm
NMEA 0183 version 3.01
5 m
1575.42 ± 1.023 MHz.
At 90° 30 ± 4.5dBi – (cable loss)
Mounted on the 60mm*60mm ground plane.
50
2.0 Max
Pulse per Second Output (Default 100 ms
pulse/sec)
GPS Information Output
1 LED
3 LEDs
Power reverse polarity protection
Yes
+10 V DC ~ +30 V DC (non-regulated)
2.5 W
72 mm x 117 mm x 35 mm
200 g
Plastic
9/98 GPS-721 User Manual V2.0, Oct. 2010
GPS-721 User Manual
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