Brother MFC-9320CW Service Manual page 550

WSW40 (V.34 modem settings)
■
Selector No.
1
Not used.
2
3
l Masking of symbol rate(s)
8
Note:
WSW40 takes effect only when the V.34 mode is permitted (WSW19, selector 7) in models
supporting V.34 mode.
- Selectors 3 through 8: Masking of symbol rate(s)
These selectors allow you to limit the transmission speed range in V.34 mode by masking the desired
symbol rate(s). Transmission speeds assigned to the symbol rates are listed on the next page. The
setting made by these selectors will limit the setting made by selectors 1 through 4 on WSW39.
If selector 3 is set to "1" to mask the 3,429 symbols/second when the first transmission speed choice
is 33,600 bps (specified by selectors 1 through 4 of WSW39), for example, then the allowable
maximum transmission speed will be limited to 31,200 bps. If selector 8 is set to "1" to mask the
2,400 symbols/second when the first transmission speed choice is 33,600 bps, then the allowable
maximum transmission speed remains 33,600 bps.
If selector 8 is set to "1" to mask the 2,400 symbols/second when the first transmission speed choice is
21,600 bps (specified by selectors 1 through 4 on WSW39), then the allowable maximum transmission
speed remains 21,600 bps but the minimum transmission speed will be limited to 4,800 bps.
Transmission
Symbol rate
speed (bps)
2,400
2,800
Function
Symbol rate
2,400 3,000
4,800
7,200
9,600
12,000
14,400
16,800
19,200
21,600
4,800 3,200
7,200
9,600
12,000
14,400
16,800
19,200
21,600
24,000
App.1-36
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
Transmission
Symbol rate
speed (bps)
4,800 3,429
7,200
9,600
12,000
14,400
16,800
19,200
21,600
24,000
26,400
28,800
4,800
7,200
9,600
12,000
14,400
16,800
19,200
21,600
24,000
26,400
28,800
31,200
3,429 symbols/sec
3,200 symbols/sec
3,000 symbols/sec
2,800 symbols/sec
Not used.
2,400 symbols/sec
Transmission
speed (bps)
4,800
7,200
9,600
12,000
14,400
16,800
19,200
21,600
24,000
26,400
28,800
31,200
33,600
Confidential