REB-3300 Operational Manual
Mechanical requirements
26 Weight
≦
3.5g
Power consumption
27 Vcc
DC
3.3
±5%
28 Current
REB3300:
Current
≦
[email protected] typical (w/o ext. antenna)
29
Trickle power mode
Average current
≦
65mA. (IO float)
30
Power down mode current
1. It means that the GPS receiver is in power down mode.
2. Current
≦
800
μ
A.
Environment
31 Operating
temperature
-40 ~ 85
℃
32 Humidity
≦
95%
33
Interface Protocol
1. NMEA 0183 ver 3.0, GGA, GSA, RMC and GSV once per
2. SiRF Protocol
3. 4800 bps, 8 data bits, no parity, 1 stop bits
Application Circuit
(1) Ground Planes:
REB-3300 GPS receiver needs two different ground planes. The GND_A pin(11
、
12
、
13
、
14
、
15
、
16
、
18) shall be connect to analog ground.
The GND pin(2
、
10
、
30) connect to digital ground.
(2) Serial Interface:
The Serial interface pin(RXA
、
TX1
、
TXB
、
RXB) is recommended to pull up(10K
Ω
).
It can increase the stability of serial data.
(3) Backup Battery:
It’s recommended to connect a backup battery to V_BAT.
In order to enable the warm and hot start features of the GPS receiver. If you don’t
intend to use a backup battery, connect this pin to GND or open.
If you use backup battery, shall need to add a bypassing capacitor (10uF) at V_bat
7
