User's Manual

Table Of Contents

MReX Transceiver User Manual v1.92 Firmware

Maximum over the air data rate is 9600 baud. Transmission time for a 100 byte payload at this rate

is approximately 120mS.

NOTE:

While operating using the RAW protocol, the MReX will NOT respond to any configuration

commands 10 seconds after start-up.

After the 10 second start-up delay the MReX will output “RAW ENABLED”. This is to prevent

accidental misconfiguration during normal operation.

Within the first 10 seconds of operation, after processing any valid command, a further 10

seconds is allowed for processing any additional configuration commands.

*SERIAL_LINK

To Enable Serial Point To Point operation, the link can be set up quickly with the command

*SERIAL_LINK<CR>

This command will configure the following defaults (allowing use in 25, 12.5 or 6.25kHz channel

widths):

*TX_PROTO=RAW<CR>

*TX_MODE=WTE_EN<CR>

*TX_CAP=1324560<CR>

*TX_BAUD=4800-4L_6<CR>

*RX_PROTO=RAW<CR>

*RX_MODE=WTE_EN<CR>

*RX_BAUD=4800-4L_6<CR>

*RX_RANGE=1:1324560, 1324560<CR>

*RAW_CONFIG=4,148,0<CR>

Now, set the required frequency to use, in this example 458MHZ:

*TX_FREQ=458000000<CR>

*RX_FREQ=458000000<CR>

Either accept the default values set by the *SERIAL_LINK command or make changes as desired.

Finally, issue the command SAVE to permanently store the configuration