RK-WI.M900X Radiotronix, RK-WI.M900X Datasheet - Page 9

• Manufacturer Part Number: RK-WI.M900X
• Description: RF Modules & Development Tools Wi.M900X Kit
• Manufacturer: Radiotronix

Specifications of RK-WI.M900X

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: RK-WIM900X

RK-Wi.M900X Rapid Development Kit
User’s Manual
5 Notes
5.1 Microsoft Windows / Hilgraeve HyperTerminal.
The RK-Wi.M900X Evaluation Kit can be used with HyperTerminal to receive and transmit RS-232 data
and send files using file transfer protocols such as ZMODEM. HyperTerminal and many other terminal
programs assert RTS by default. On the evaluation board, the RTS line is tied to the CMD pin on the
module. When the CMD pin is held low, which is the case when the RTS line is asserted, the module will
be placed in command mode.
In command mode, all UART data sent to the module will be interpreted as commands and will NOT be
sent to the RF engine for transmission. Additionally, if an evaluation board is switched on in the presence
of an asserted RTS line, it will perform a full hardware and flash reset to the factory defaults.
To use the evaluation board with HyperTerminal or other terminal program, you must first remove the
jumpers from pins 7+8 of JP2, if you are using an RS-232 connection to your PC, or JP3, if you are using
a USB connection to your PC. Removing this jumper will disconnect the RTS line from the CMD pin on
the module, allowing normal operation.
5.2 Loopback Mode.
The RK-Wi.M900X kit can be operated in a loopback mode by configuring the COM jumpers in such a
way as to link together the TXD and RXD lines to and from the module in the remote evaluation board.
Using this mode, the user can send data from their local evaluation board and have it re-transmitted back
to them by the remote evaluation board. The maximum baud rate allowed in loopback mode is 38400
baud for point to point communications only.
Loopback mode using the RS232 jumpers:
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1/29/2007
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