CONTENTS / AMERICAN
176
Important Information
177
Codes
177
Placement of the Aerial and Receiver
178
The Transmitter
183
The Receiver
192
Supplement for the 460 system
195
Service and Support
196
Trouble Shooting Chart
197
Terms and conditions of sale
199
FCC Statements
200
Coding Tables 1-10,Appendix A
201
Coding Tables 0-15,Appendix B
202
Coding Tables 460-93,Appendix C
207
Connecting the receiver – see Appendix D
IMPORTANT!
In order to make optimal use of your system, it is important that
you take the time to read through this manual before you begin
to install/program your equipment.
GENERAL INFORMATION
The system works at the frequency 433.92MHz and uses frequency
modulation, commonly referred to as FM.The main benefit of using FM
instead of the more common AM (amplitude modulation) is that FM is less
sensitive to the electrical interference generated by computers, electric
motors, etc.
Objects positioned between the transmitter and receiver aerial, especially
large metal objects (think about the reinforcement rods in concrete walls),
can affect the range in a very unpredictable manner, depending on how the
radio signals spread.
The effect of other radio transmitters operating on the same frequency
in the vicinity also affects the range. Due to these factors, it is difficult to
provide any general advice other than that if there is a free line of visibility
between the transmitter and the receiver the range with an optimal signal
should be the best.
The normal range for the transmitter in an interference-free environment
is about 50-100m.
176