Brother MFC-7450 - Page 272

App. 1-33
Confidential
<WSW28>
• Selectors 1 through 6: Transmission level of DTMF high-/low-band frequency signal
These selectors are intended for the manufacturer who tests the machine for the Standard.
Never access them.
Selector No. Function Setting and Specifications
1
I
3
Transmission level of DTMF
high-band frequency signal
No. 1 2 3
0 0 0: 0 dB
001: +1 dB
010: +2 dB
011: +3 dB
1 0 0: 0 dB
101: -1 dB
110: -2 dB
111: -3 dB
4
I
6
Transmission level of DTMF low-
band frequency signal
No. 4 5 6
0 0 0: 0 dB
001: +1 dB
010: +2 dB
011: +3 dB
1 0 0: 0 dB
101: -1 dB
110: -2 dB
111: -3 dB
7
8
Not used.