Brother International MFC-9850 Service Manual - Page 161
If selector 3 is set to 1 to mask the 3429 symbols/second when the first transmission speed
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WSW40 (Function setting 18) Selector No. 1 2 Function Not used. 3 Masking of symbol rate(s) | 8 Setting and Specifications Not masking Masking No. 3 0 1 No. 4 0 1 No. 5 0 1 No. 6 0 1 No. 7 - - No. 8 0 1 3429 symbols/sec 3200 symbols/sec 3000 symbols/sec 2800 symbols/sec Not used. 2400 symbols/sec NOTE: WSW40 takes effect only in the V. 34 mode. l Selectors 3 and 8: Masking of symbol rate(s) These selectors allow you to limit the transmission speed range in the V. 34 mode by masking the desired symbol rate(s). Transmission speeds assigned to the symbol rates are listed below. The setting made by these selectors will limit the setting made by selectors 1 through 4 of WSW39. If selector 3 is set to "1" to mask the 3429 symbols/second when the first transmission speed choice is 33600 bps (specified by selectors 1 through 4 of WSW39), for example, the allowable maximum transmission speed will be limited to 31200 bps. If selector 8 is set to "1" to mask the 2400 symbols/second when the first transmission speed choice is 33600 bps, then the allowable maximum transmission speed remains 33600 bps. If selector 8 is set to "1" to mask the 2400 symbols/second when the first transmission speed choice is 21600 bps (specified by selectors 1 through 4 of WSW39), the allowable maximum transmission speed remains 21600 bps but the minimum transmission speed will be limited to 4800 bps. Symbol rate 2400 2800 Transmission speed (bps) 2400 4800 7200 9600 12000 14400 16800 19200 21600 4800 7200 9600 12000 14400 16800 19200 21600 24000 26400 Symbol rate 3000 3200 Transmission speed (bps) 4800 7200 9600 12000 14400 16800 19200 21600 24000 26400 28800 4800 7200 9600 12000 14400 16800 19200 21600 24000 26400 28800 31200 Symbol rate 3429 Transmission speed (bps) 4800 7200 9600 12000 14400 16800 19200 21600 24000 28800 31200 33600 V - 49