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8. TROUBLE SHOOTING
Problems Reasons Methods
Weak or no GPS signal can
be received at the place of
GBT-709
Connect an exter
nal antenna, which locate as a
open space to your GBT709 and then run
GPSViewer Cold start function.
No position output
but timer is counting
At outdoor space but GPS
signal is blocked by building
or car roof.
Go outdoor and run GPSViewer Cold start
function to try again, or connect an external
antenna to improve the poor GPS signal.
Execute fail Bluetooth function unstable
Power On/Off GBT-709.
Re-Start PDA or PC and reference sec 5.2
re-install software
Can not turn on the
COM port
Install GBT-709
incompletely
or operate the device is
being used with same COM
port
Install GBT-709 completely or stop other
device
that is being used.
Can not find out
GBT-709
Poor connection
Re-Start PDA or PC and reference sec. 5.2
re-install software.
No action for few minutes
may cause Pocket PC entry
power save mode. It will
close the COM port at the
same time.
Close the application and execute it again to
reopen the COM port.
No Signal
Weak or no GPS signal
when using GBT-709 indoor
Connect an external antenna to your GBT709.