Original Frequency (Hz) | AN655 DTMF (Hz) | Modified Program (Hz) |
697 | 709 | 709 |
770 | 798 | 774 |
852 | 880 | 852 |
941 | 982 | 946 |
1209 | 1278 | 1217 |
1336 | 1419 | no meazurement :-( |
1447 | 1503 | no meazurement :-( |
Download Schematic in GIF format : dtmf_tx.gif
(32,330 bytes)
Download ASM file: 84_dtmf.asm
(11,367 bytes)
Download both files in ZIP archive: dtmf_all.zip
(34,224 bytes)