Brother FAX2800 Service Manual page 183

Selector
No.
1
Not used.
2
3
| Masking of symbol rate(s)
8
NOTE: WSW40 takes effect only in V. 34 mode.
Selectors 3 and 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 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, then 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), then the allowable maximum
transmission speed remains 21600 bps but the minimum transmission speed will be limited to 4800
bps.
Symbol rate Transmission speed
2400
2800
WSW40
(Function setting 17 in V. 34 mode)
Function
Symbol rate Transmission speed
(bps)
2400 3000
4800
7200
9600
12000
14400
16800
19200
21600
4800
7200
9600 3200
12000
14400
16800
19200
21600
24000
26400
Setting and Specifications
Not masking
No. 3 0
No. 4 0
No. 5 0
No. 6 0
No. 7 -
No. 8 0
(bps)
4800
7200
9600
12000
14400
16800
19200
21600
24000
26400
28800
4800
7200
9600
12000
14400
16800
19200
21600
24000
26400
28800
31200
40
Masking
1 3429 symbols/sec
1 3200 symbols/sec
1 3000 symbols/sec
1 2800 symbols/sec
- Not used.
1 2400 symbols/sec
Symbol rate Transmission speed
(bps)
3429 4800
7200
9600
12000
14400
16800
19200
21600
24000
28800
31200
33600