Справочник Пользователя для RoyalTek rgm-3000

 

10 

This is the main power supply for the Engine 

board. The power range is from 3.3V±10%, 

ripple 

≤

 200mV. The maximum current of 

RGM-3000 is 

≤

 200mA. 

GND provides the ground for the Engine 

board. Connect all grounds. 

 

This is the battery backup supply that 

powers the SRAM and RTC when main 

power is removed. The input voltage level is 

from 2.1V~3.6V. Max current draw is 10 uA 

at 3.3volt. Without an external backup 

battery or on board battery, engine board will 

execute a cold start after every turn on. To 

achieve the faster start-up offered by a hot 

or warm start, either a backup battery must 

be connected or battery installed on board. 

This is the main transmit channel and is 

used to output navigation and measurement 

data to user written software. The default 

setup is NMEA Output, 4800bps, 8 data bits, 

no parity, 1 stop bit. The default sentences 

are GPGGA, GPGSA, GPRMC once per 

second and GPGSV once per 5 seconds. 

Please refer to “software interface” for the 

detail protocol. 

This is the main receiving channel and is 

used to receive software commands to the 

Engine board from user written software. 

Please refer to “software interface” for the 

detail protocol. 

This is used for DGPS differential input .   

Pull Bootsel pin high & reset , then it will get 

to boot mode. 

This pin can be programmed to input or 

output. For more application, please contact 

Royaltek’s sales. 

 

Supply voltage 

VCC 

V 

2.97 

3.63 

Output current 

 

mA 

 

200 

 

1. It is recommanded to attach GNDu plate (30*30MM) below RGM3000M module or the antenna 

module of RGM-3000E to increase the intensity of reception . Please refers to “Design Layout   

  Diagram “ . 

2. During design of integrated layout, please isolate high frequency noise source (power Switch,data 

or address signal lines ) from GPS antenna. 

3. 

Please don’t place metal object above patch antenna.