Read Panasonic DP-1520P / DP-1820P / DP-1820E Service Manual online
119
JUN 2004
Ver. 1.0
DP-1520P/1820P/1820E
4.2.5.3.
DTMF Signal
This Service Mode is used to check the DTMF (Dual Tone Multi Frequency) signal output.
The DTMF signal can be generated using the following procedure.
The DTMF signal can be generated using the following procedure.
• DTMF Single Tone
Press the “V”, ”/\” arrow keys to select the "4: MODEM Test" on the display.
↓
Press the “SET” key to select the "3: DTMF Test".
↓
Press the “SET” key.
↓
Press the “V”, ”/\” arrow keys to select the "1. Single".
↓
Press the desired number and press the "START" key.
↓
Press the “STOP” key twice to exit the service mode.
• DTMF Dual Tone
Press the “V”, ”/\” arrow keys to select the "4: MODEM Test" on the display.
↓
Press the “SET” key to select the "3: DTMF Test".
↓
Press the “SET” key.
↓
Press the “V”, ”/\” arrow keys to select the "2. Dual".
↓
Press the desired number and press the "START" key.
↓
Press the “STOP” key twice to exit the service mode.
DTMF Single Tone Table
DTMF Dual Tone Table
Number
DTMF Signal Tones
Number
DTMF Dual Tones
1
697 Hz
0
941 Hz + 1336 Hz
2
770 Hz
1
697 Hz + 1209 Hz
3
852 Hz
2
697 Hz + 1336 Hz
4
941 Hz
3
697 Hz + 1477 Hz
5
1209 Hz
4
770 Hz + 1209 Hz
6
1336 Hz
5
770 Hz + 1336 Hz
7
1477 Hz
6
770 Hz + 1477 Hz
8
1633 Hz
7
852 Hz + 1209 Hz
8
852 Hz + 1336 Hz
9
852 Hz + 1477 Hz
*
941 Hz + 1209 Hz
#
941 Hz + 1477 Hz
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