RXC-3000 Hardware Installation and User Guide
9000-0000-040 Revision 10 31 of 46 Genave Electronics
DTMF Decoder
The DTMF decoder circuit monitors to the audio signal from the radio for “Touch-Tone” telephone
digits. When the digits are discovered, the circuit decodes them and sends to the microprocessor. Mark
is the amount of time that a tone is being transmitted and “Space” is the amount of time that the tone is
not being transmitted.
DTMF Decoder Characteristics
The DTMF decoder circuit can accept signals as fast as 20 milliseconds for both Mark and Space
timing.
A DTMF string can be anywhere between 2 characters long and 32 characters long.
The decoder circuit requires a gap between character strings of 600 milliseconds to decode the previous
string before it can accept another string of characters to decode.
Triggering RXC-3000 Off Of A DTMF String
Please refer to the Programming Guide 9000-0000-041 for more information
How To Enter/Adjust DTMF Strings
Please refer to the Programming Guide 9000-0000-041 for more information
DTMF Learn Mode
Please refer to the Programming Guide 9000-0000-041 for more information
“Live Look” (DTMF Digit Grabber)
Please refer to the Programming Guide 9000-0000-041 for more information
To Next Page
Loading...