Polaris Alpha User Manual

54
A-4 Data Flow of the I/O Interface
There are 3 types of I/O interface, Bluetooth / USB / LV-TTL UART, on the Alpha RTK receiver for
output of NMEA or base data, receiving base data, and receiving configuration command. The
following figures provide a clear view for all 6 operation modes specified by the three interface
selection LEDs and the two slide switch positions.
Alpha
Polaris RTK
T
U
B
USB TTL
BT
Command from RTK Viewer
NMEA Messages
NMEA Messages
Base Data
B
switch
Figure A-4-1
Alpha
Polaris RTK
T
U
B
USB TTL
BT
NMEA Messages
NMEA Messages
Base Data
B
switch
Figure A-4-2
Alpha
Polaris RTK
T
U
B
USB TTL
BT
NMEA Messages
NMEA Messages
Base Data
NMEA Messages
Command from RTK Viewer
B
switch
Figure A-4-3

Polaris Alpha Specifications

General

Frequency Range	20 MHz to 6 GHz
Instantaneous Bandwidth	40 MHz
Dynamic Range	80 dB
Power Supply	12V DC
Interface	Ethernet