Brother International MFC 8890DW Service Manual - Page 440
<WSW02>, Selectors 5 through 8: Attenuator for pseudo ring backtone to the line
UPC - 012502622673
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Selector No. Function Setting and Specifications No. 1 2 1 2 Tone signal transmission time length 0 0 : 70 ms 0 1 : 80 ms 1 0 : 90 ms 1 1 : 100 ms No. 3 4 3 Min. pause in tone dialing 4 0 0 : 70 ms 0 1 : 80 ms 1 0 : 90 ms 1 1 : 140 ms 5 Attenuator for pseudo ring 0: 0 dB 1: 8 dB I backtone to the line (selectable in the range of 0-15 dB, in 1 dB 0: 0 dB 0: 0 dB 1: 4 dB 1: 2 dB 8 increments) 0: 0 dB 1: 1 dB • Selectors 1 through 4:Tone signal transmission time length and Min. pause in tone dialing These selectors set the tone signal transmission time length and minimum pause in tone dialing. (Example: If "1," "2," "3," "4," and "5" are dialed.) Tone signal transmission time length set by selectors 1 and 2 "1" "2" "3" "4" "5" Min. pause set by selectors 3 and 4 • Selectors 5 through 8: Attenuator for pseudo ring backtone to the line These selectors are used to adjust the sound volume of a ring backtone in the F/T mode, an on-hold sound, or a beep generated as a signal during remote control operation or at the start of ICM recording. The larger the value specified by these selectors, the greater the attenuation. App. 1-6 Confidential