HOLUX
GR-231 Bluetooth GPS Receiver Manual
17
˙
GR-231 has built Li-battery inside, please avoid closing high temperature
environment or sun shine directly for a long time.
˙
User has to return GR-231 to HOLUX if the inner Li battery has to be
replaced.
9. Trouble
Shooting
Problems Reasons
Methods
Weak or no GPS signal can be
received at the place of GR-231
Connect an external antenna, which
locate as a open space to your GR-231
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 GR-231.
Re-Start PDA or PC and reference sec 5.2
re-install s
oftware
Can not turn
on the COM
port
Install GR-231 incompletely or
operate the device is being used
with same COM port
Install GR-231 completely or stop other
device that is being used.
Can not find
out GR-231
Poor connection
Re-Start PDA or PC and reference sec.
5.2 re-install s
oftware
.
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 GR-231 indoor
Connect an external antenna to your
GR-231.
