Toshiba E-STUDIO190F Service Manual page 174

5.2.5.3. 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.
• DTMF Single Tone
Press the "V", "/\" arrow keys to select the "4: MODEM Test" on the display.
↓
Press the "SET" key.
↓
Press the "V", "/\" arrow keys select the "1: LINE-1".
↓
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.
↓
Press the "V", "/\" arrow keys select the "1: LINE-1".
↓
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
Number
1
2
3
4
5
6
7
8
DTMF Signal Tones
697 Hz
770 Hz
852 Hz
941 Hz
1209 Hz
1336 Hz
1477 Hz
1633 Hz
DTMF Dual Tone Table
Number
0 941 Hz + 1336 Hz
1 697 Hz + 1209 Hz
2 697 Hz + 1336 Hz
3 697 Hz + 1477 Hz
4 770 Hz + 1209 Hz
5 770 Hz + 1336 Hz
6 770 Hz + 1477 Hz
7 852 Hz + 1209 Hz
8 852 Hz + 1336 Hz
9 852 Hz + 1477 Hz
* 941 Hz + 1209 Hz
# 941 Hz + 1477 Hz
174
DTMF Dual Tones