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9502 User Guide
3004146-0001 Rev H
includes a configurable idle timer to control when the UT shuts
down into the Wake on LAN mode. The UT declares the link idle
if no packets are received on the Ethernet port within the idle time.
Additionally, the UT can be configured to power down at a
configurable time of day. Enter UTC time as 0001 to 2400. Set to 0
to deactivate the time of day feature. Note that the UT waits 5
minutes after startup before it checks the time of day to see if it has
to power off.
When the UT powers down into this mode it will disconnect from
the BGAN network and monitor the local Ethernet port and power
up again if it sees any Ethernet packet (ARP, DHCP, data packet,
etc). In this mode the power consumption is less than 10mW when
powered from a 12V source. The UT generates Ethernet sync
pulses so the TE believes the link is still active.
When an Ethernet packet is detected the UT will power up
normally, register and bring up a PDP context (if configured for
ACA.) It takes about 1 minute for the UT to be fully connected to
the Inmarsat network.
For this mode to be useful the TE must only send Ethernet packets
when it has data to send over the air. Thus, for example, the TE
should be configured with a static IP address to avoid periodic
DHCP exchanges waking up the UT.
Serial Pin Power Control
The UT can be switched off by applying a voltage to pin 9 of the
DB9 serial port.
If you apply voltage to Pin 9 of the serial port with pin 5 as
Ground, the UT will power down. It will power up when you
remove the voltage.
The voltage can be 2.5V to 50V. 12V is the recommended level.
ATC
The UT includes an extended L-band scanning mode to detect
Auxiliary Terrestrial Component (ATC) or other sources of
external interference. The terminal can be commanded into
scanning mode by the Web UI, AT command or SMS command.
During the scan the terminal will be offline to the BGAN network
and will automatically reboot to return to normal operation.
In scanning mode the terminal measures the received signal
strength across the 41MHz of L-band spectrum (1518 to
1559MHz). Once the scan is complete the UT restarts and
communicates the results of the scan.