Murata Electronics North America 2410P Manual Do Utilizador
WIT2410P
© 2000- 2008 Cirronet™ Inc
32
M-2410P-0000 Rev G2
6. WIT2410 DEVELOPER’S KIT
The WIT2410 Developer’s Kit contains two self-contained wireless modems (HN-510s)
built around the WIT2410M OEM module. In addition, two WIT2410M OEM modules
are included in the kit. The self-contained units allow developers to get up and running
quickly using standard RS-232 interfaces without having to build a CMOS level serial
interface. In addition, the self-contained modems include status LEDs to provide modem
status information visually. The built-in battery pack allows the developer to use the
modems without being tethered to a power source. This provides a simple way to test the
range of the radios. Other than the true RS-232 signals of the serial interface, the self-
contained modems operate exactly as the OEM modules.
Connection is made to the HN-510s through a standard DB-9 connector. The HN-510s
are set up as DCE devices requiring the use of a straight-through cable to connect to DTE
devices. The pinout is provided in Section 7.3. The modems can be used with just a
three wire connection. Transmit data, receive data and ground are the three required
connections. Note that in this configuration, no flow control is available as the WIT2410
does not support software flow control.
When the developer’s kit is shipped from the factory, one HN-510 is set up as a base
station and the other is set up as a remote. The interface rate for both modems is set at
9600 bps. The default setting for the network key allows the modems to communicate
without changing any settings. As a quick test, separate the two modems by about 5 feet,
plug in the power and turn the modems on. Do not connect the modems to any device.
The Carrier Detect (CD) LED on the base station will come on immediately. After a few
seconds, the CD LED on the remote will come on. This indicates that the modems have
synchronized and have established a communications link.
An important point to remember is that if the base station is in Sleep mode, no
communications can take place until (1) the base station is taken out of sleep mode and
(2) the remote has synchronized with the base station. As the Sleep signal is brought out
on the pin usually occupied by DTR, connecting the base station to a PC serial port with
DTR de-asserted will put the modem into sleep mode. Some communications programs
will attempt to communicate immediately after asserting DTR. The base station will
transmit this data, but the remote will not be synchronized with the base station and will
not receive the transmission. In this instance, do not connect the Sleep signal to DTR of
the serial port.
built around the WIT2410M OEM module. In addition, two WIT2410M OEM modules
are included in the kit. The self-contained units allow developers to get up and running
quickly using standard RS-232 interfaces without having to build a CMOS level serial
interface. In addition, the self-contained modems include status LEDs to provide modem
status information visually. The built-in battery pack allows the developer to use the
modems without being tethered to a power source. This provides a simple way to test the
range of the radios. Other than the true RS-232 signals of the serial interface, the self-
contained modems operate exactly as the OEM modules.
Connection is made to the HN-510s through a standard DB-9 connector. The HN-510s
are set up as DCE devices requiring the use of a straight-through cable to connect to DTE
devices. The pinout is provided in Section 7.3. The modems can be used with just a
three wire connection. Transmit data, receive data and ground are the three required
connections. Note that in this configuration, no flow control is available as the WIT2410
does not support software flow control.
When the developer’s kit is shipped from the factory, one HN-510 is set up as a base
station and the other is set up as a remote. The interface rate for both modems is set at
9600 bps. The default setting for the network key allows the modems to communicate
without changing any settings. As a quick test, separate the two modems by about 5 feet,
plug in the power and turn the modems on. Do not connect the modems to any device.
The Carrier Detect (CD) LED on the base station will come on immediately. After a few
seconds, the CD LED on the remote will come on. This indicates that the modems have
synchronized and have established a communications link.
An important point to remember is that if the base station is in Sleep mode, no
communications can take place until (1) the base station is taken out of sleep mode and
(2) the remote has synchronized with the base station. As the Sleep signal is brought out
on the pin usually occupied by DTR, connecting the base station to a PC serial port with
DTR de-asserted will put the modem into sleep mode. Some communications programs
will attempt to communicate immediately after asserting DTR. The base station will
transmit this data, but the remote will not be synchronized with the base station and will
not receive the transmission. In this instance, do not connect the Sleep signal to DTR of
the serial port.