Haicom HI-305N, User Manual

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4.1 LED Indicator
4.2 External Antenna
Basically, you don't need external antenna to perform GPS
positioning with HI-305N since it already build-in active antenna.
HI-305N can receive good satellite signal without external antenna
even using in car dashboard or side window. The only condition that
you need external antenna is when HI-305N can not directly "see"
the sky, For instance, when you are in the middle of a car, or any
environments that GPS signal is blocked, the external GPS antenna
will help to receive better GPS signal.
Plug the external antenna with MMCX connector to the plug on
the side of HI-305N. Place the magnetic external antenna on the
roof of the car or outdoor open-space, and make sure place it in
correct direction. That is, the side with magnetic is the bottom side,
and the upper side must face to sky in order to receive better signal.
Notice:
Hold the antenna connector while you plug the external antenna
into HI-305N or unplug the external antenna from HI-305N. Do not
pull the cable line.
LED off
LED flashing
LED on Receiver switch off
3D Position Fixed
Signal searching
4. System