Airbus TDM880i, Инструкция по эксплуатации

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F E A T U R E G U I D E
PS11129BENAC01 TDM880i - Instruction Manual
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This document is the property of Airbus DS SLC and should not be copied or circulated without permission.
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Load management (group mana FACCH)
While the TDM880i cannot establish outbound individual calls or accept them, it is able to register and scan group
traffic. Group management in the TDM880i is done exactly the same way as in the THR880i (TETRA handportable
radio) product. During the group connectivity, the TDM880i can utilize FAC channel (FACCH) in SDS sending when
there is no other traffic.

Alert condition and notification feature
The TDM880i can be configured to monitor I/O line changes and to react to them by setting an alert condition into
the system. Depending on the configuration, the action taken may be a single shot SDS message to a defined
address, continuous sending until the alert condition is removed, or an SDS notification requiring acknowledgement
before turning off the alert condition.
In addition to immediate and Alert dedicated SDS sending, the TDM880i can be configured to include alert status
information into LIP messaging.
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AT commands
AT commands can be used to manage and control the functionality of the TDM880i.
For a complete list of the AT commands, refer to the latest version of Airbus Defence and Space TETRA AT
command list.
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I/O lines functionality
The TDM880i includes one 12-pin connector (AT or CPU) and two 15-pin board-to-wire connectors in which certain
pins can be used as indications of the device state or as directly configurable I/O between the device and a remote
unit. In X103 and X102 connectors, the levels of input and output signals are 5 V TTL excluding the FBUS and
MBUS signal. See Section CONNECTOR INTERFACES on page 31. In the CPU-connector the inputs and outputs
are 2.8 V.
Power On output , X103, X901:
The Power On signal indicates the power status of the device. It will be held inactive until the device has booted up
properly and is ready to operate (for example, ready to receive a command via the AT interface).
1
In Service output , X103, X901:
The line indicates the status of the radio signal reception. When the terminal has successfully registered in the
system, and the signal it is receiving is good enough for communications, this line is active.
1
GPS Fix output , X103, X901
This line is active when the GPS receiver is enabled and the satellite fix for positioning is good enough.
1
Over Temp output , X103, X901:
The output is active when the device is unable to communicate due to overheating. The output will go inactive when
the temperature is back within specified limits.
1
IGS input , X103, X901:
The TDM880i can be toggled on/off by an external application. To toggle the power on, set the IGS to logic high level
(see Table 2), and to power off, set it to 0 V.
DC output , X102, X103:
5 V output voltage is provided through the connectors X102 and X103, the maximum load current is 100 mA.
Note: AT passwords cannot contain quotation marks ("... ").
Note: The data connection must be disconnected before removing the data cable.
If the data cable is removed before the data connection is disconnected, the connection will stay reserved
and new connection attempts will fail.
1. Note that this signal is not driven actively to the low state when the device is powered on. The device has a weak pull-down on board. Use an external
pull-down resistor in a harsh environment. This applies to X103.