I-Lotus RX Oncore User Manual - page 21
Manual is about: i-Lotus RX Oncore Advanced GPS module
of
42
Document Number: 403
– GPS – 070
Page | 17
9.1
GPS Antenna detection
To support active GPS antenna (5V), V
ANT
connected to 3~5V supply. RX Oncore supports 3V or 5V active
antenna only.
To support passive GPS Antenna, tie V
ANT
to GND
When short circuit was detected, the voltage supply to the antenna will be automatically shut down.
Antenna sense circuitry detects the following conditions:
Active antenna connected
No active antenna connected
Antenna short circuit