SDT 5000 User Manual
Document MBUD-0109v11
Data Echo
The data echo flag is the default value used for the ‘online data echo’ in AT
mode. The user via the ATFn command on the RTU port may modify this
value.
Result
The result enumerated value is the default value used for the ‘result code
display/suppressed’ in AT mode. The user via the ATQn command on the
RTU port may modify this value.
Verbose
The verbose enumerated value is the default setting used for the ‘verbose
mode’ in AT mode. The user via the ATVn command on the RTU port may
modify this value.
Data carrier detect
(DCD) mode
The DCD mode controls the output of DCD with the following values:
ASSERT, DEASSERT, CPU POWERUP, OPERATIONAL, or
CONNECTED. The default value is ASSERT.
If DCD mode is ASSERT the DCD line on the RTU port will be asserted
when the SDT 5000 is powered on.
If the DCD mode is DEASSERT the DCD line on the RTU port will be
deasserted when the SDT 5000 is powered on.
If the DCD mode is TRX POWERUP the DCD line on the RTU port will be
asserted when the satellite transceiver is powered up.
If the DCD mode is OPERATIONAL the DCD line on the RTU port will be
asserted when the transceiver is powered up and receiving a valid signal
from the satellite.
If the DCD mode is CONNECTED the DCD line on the RTU port will be
asserted when the SDT 5000 has a connection with the host.
The user via the AT&CN command on the RTU port may modify this
value.
Data terminal ready
(DTR) mode
The DTR mode handles the DTR input with the following values: OFF,
NORMAL, or WAKEUP. The default value is OFF.
If DTR mode is OFF, the DTR line is ignored.
If DTR mode is NORMAL, when DTR is not asserted the incoming calls
for the RTU will be rejected. When DTR is asserted the RTU is ready to
receive data.
If DTR mode is WAKEUP when DTR is asserted the transceiver is forced
on and starts listening to the satellite. If a call is received while in
‘WAKEUP’ and DTR is not asserted the call will be rejected. If DTR drops
the transceiver can turn off when idle. For more information please see
section 8, Power Modes.
The user via the AT&DN command on the RTU port may modify this
Version 1.1, 03/24/06
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