Geostar GeoS-3, Руководство пользователя

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© R&D Center “GeoStar navigation” Ltd. 2012-12-25 11
When supplying external power 3.3V to +3.3V pad, turn off the POWER switch.
When supplying external backup source to VBAT pad, turn off the Battery switch.
3.4.
Getting Started. Operation in Full-power Mode
After making hardware connections as described in section 3.2 , turn the module on by turning
POWER switch to ON direction.
After power-up, the module starts automatically in full-power mode. On default, Port #0 works
on binary protocol, and Port #1
– on NMEA protocol.
LED devices behave as follows:

3.3V : constantly lighting

Tx0, Tx1 : flashing once per second

Rx0, Rx1: flashing as soon as the Host is sending data to the module

STATUS: flashing rate depends on current module status:
ACQUISITION : period is 2 seconds (1 second on, 1 second off); indicates the
module is at signal acquisition phase, and no position fix yet
POSITIONING : period is 1 second (0.2 seconds on, 0.8 seconds off); indicates
position fix is available
FAILURE : period is 0.5 seconds (0.2 seconds on, 0.3 seconds off); indicates the
module has found hardware failure, and no position fix can be calculated.

PD_ACK: lighting if the
module is in “ACTIVE” state.
Warm/hot starts can be organized in following ways:

If on-board backup battery is OK and Battery switch is on, recycle main power by turning
off and then turning on POWER switch or click ON/OFF or nRESET pushbutton

If Battery switch is off, click ON/OFF or nRESET pushbutton.