Appendix D: Troubleshooting
Issue
Investigation
Workaround
BRM appears
unresponsive when first
booted up, and unable to
issue any commands for
uSIM; connection;
messaging; AT-related
activities, go on air, or
connect to a BAT or BNE.
Is this unresponsiveness lasting
more than 30 seconds?
If
No
, then the reason for the
initial unresponsiveness is that the
BRM remains in Low Power mode
until it obtains a valid GPS location
fix, which can take up to 30
seconds. This fix is obtained either
from the internal GNSS or external
NMEA interface. If after 30
seconds no valid GPS fix is
obtained, the BRM will use the last
known fix instead (
0N
,
0E
is the
default if no previous fix is
available).
If
Yes
, then ensure the SIM card is
inserted and is valid for the class
of BGAN Terminal being used, and
that the supplied FEM has been set
to operate as a Class 2.
BRM freezes up during
on air data transfer or
when connected to a BAT
or BNE.
N/A
Reboot the BRM.
Amending one or more of
the following
configurations has no
effect on the operation of
the BRM:
>
am_buffer_size
>
um_buffer_size
N/A
These configuration settings are
currently unsupported by the BRM.
Some BRM WebUI pages
occasionally lock up.
N/A
Reboot the BRM.
On air connection
problems.
Is the location provided to the
BRM accurate?
If
No
, then ensure the location is
correct. If the Terminal is mobile,
place it in a static location first so it
can obtain a valid GPS fix before it
becoming mobile again.
If
Yes
and the Terminal is either
static, or is mobile but has
obtained a valid GPS fix in a static
format, then please contact your
point of contact at Inmarsat.
87:
BGAN Radio Module Terminal Development Kit User Guide
Confidential and Proprietary – Inmarsat Global Limited
