User manual

805U Radio Modem Module User Manual
Page 28 © April 2011
the normal radio level by mounting the antennas higher or in a better location. This not
always possible.
System performance may be improved by changing the following parameters :-
• If in transparent mode, try controlled mode.
• If configured for a radio data rate of 76800 or 38400 bits/sec, reduce the rate to 19200
bits/sec.
• If large radio messages are being transmitted, reduce the maximum message length, and
transmit the data in more messages of smaller size.
Another common problem is the response time of the host software. Some hosts operate by
sending a message from one end and require a response to that message within a certain time.
If this time is less than the turn-around time of the radio modem, then the system will not
operate. It may be possible to lengthen the response time in the host software.