User's Manual

Chapter Three Operation
Man_905UD_2.0.doc Page 27
Interference will only cause a problem if the amplitude of the interference is comparable to
the radio signal from the 905U-D units. If the interference level is relatively small, then it will
not affect the performance of the system. If interference is causing a problem, try to improve
the normal radio level by mounting the aerials 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 9600 bits/sec, reduce the rate to 4800 bits/sec.
• If large radio messages are being transmitted, reduce the maximum message length,
and transmit the data in more messages of smaller size.