Справочник Пользователя для Sierra Wireless Q2438F
WM_HWD_SK_UGD_002 - 002
6/27/2003
3 Description of the Interfaces
3.1 Power
A standard DC Power Jack is provided on the Interface Board. The included
Power Adapter can be used to supply the Module and Interface Board via this
jack.
Alternatively a lab power supply capable of supplying at least 3.8Vdc at
2.0Amps can be used. The advantage of the lab power supply is in allowing
the user to monitor the current drain of the Module to help determine its
operating state.
The Power Jack has a center positive connection, if a lab supply or other
external source is used. A cable for this purpose is available.
3.2 Computer
The Interface Board communicates with the controlling PC through standard
RS-232 Interfaces. Two such interfaces are provided, however the typical
RS-232 Interfaces. Two such interfaces are provided, however the typical
customer application will only require one of these (DATA).
3.2.1 DATA
The DATA Interface, J200, provides a full 8 wire RS-232 interface with the PC.
This interface supports the AT Commands; the Diagnostic (DM) information;
and high speed data.
Light Emitting Diodes (LEDs) for this port are included on the Interface Board
on the RX, TX, DTR, DSR, RTS, CTS and DCD lines to indicate the state of the
on the RX, TX, DTR, DSR, RTS, CTS and DCD lines to indicate the state of the
line. The red LED indicates a negative voltage on the RS-232 (Logic 1) and the
green LED indicates a positive voltage on the RS-232 (Logic 0).
3.2.2 DM
The DM Interface, J201, provides a 2 wire RS-232 interface for Diagnostic
information only. The typical customer application should not require this
interface as all functionality of the DM Interface is now supported through the
DATA Interface as well.
Light Emitting Diodes (LEDs) for this port are included on the Interface Board
on both the RX and TX lines to indicate the state of the line. The red LED
indicates a negative voltage on the RS-232 (Logic 1) and the green LED
indicates a positive voltage on the RS-232 (Logic 0).
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without prior written agreement.
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des tiers sans son autorisation préalable.