DTD-16 DTMF Tone Decoder
The tiny TOOLS DTD-16 is a full-featured DTMF tone/sequence decoder that is user programmable to decode up to four tone sequences or a single tone and assign it to any one of four relays, twelve open collectors and/or the RS-232 serial port. The relays/open collectors may be programmed to close for the duration of tone, pulse immediately after completion of detection, wait a programmed length of time after detection or latch/unlatch. Programming is performed using a non-dedicated PC’s COM port equipped with Windows HyperTerminal. Features: Decodes all 16 DTMF tones; adjustable tone detection time; Line level high Z input, which accepts a balanced or unbalanced source, front panel status for power, each relay, valid DTMF tone, serial data activity, recessed programming push button with LED indicator and recessed input level control with a range of 20 to +8dbu. All connections are on screw terminals except for the DB-9 female serial port connector. The DTD-16 may be set on a desktop, mounted on a wall or up to four units mounted on the RA-1, Rack-Able mounting shelf.