Specifications
GR-3 Operator’s Manual
A-4
On-board Backup battery for timekeeping and almanac data storage;
10 years minimum operation
I/O
Communication
Ports
A high speed RS232 serial port (rimmed in black), a USB
port (rimmed in yellow), and an internal Bluetooth
communication port (port D).
Port specifications RS232 Serial Port
Baud rate: 460800,230400,115200(default),57600,
38400,19200,9600,4800,2400,1200,600, 300
Flow control: RTS/CTS
Length: 7,8 (default)
Sop bit: 1 (default), 2
Parity: None (default), Odd, Even
Bluetooth port
Available
USB port
Version 1.1
Connectors Modem Antenna (BNC or reverse polarity TNC
depending on modem type), PWR, RS232 Serial, USB
MINTER Six external LEDs (see “LEDs” on page A-2 for details)
ON/OFF control input (power button)
Data logging control (FUNCTION button)
Data Features
Up to 20 Hz update rate for real time position and raw
data (code and carrier)
10cm code phase and 0.1mm carrier phase precision
RTCM SC104 version 2.1, 2.2, 2.3, and 3.0 I/O
Multiple Base RTCM
Geoid and Magnetic Variation models
RAIM
Different DATUMs support
Output of grid coordinates
CMR and CMR+ support
Table A-1. Receiver General Specifications (Continued)
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