Brother DCP375CW Service Manual page 497

Selector
No.
1
First transmission speed choice for
|
fallback
4
5
Last transmission speed choice for
|
fallback
8
Note: WSW39 takes effect only when the V.34 mode is permitted (WSW19, selector 7) in
models supporting V.34 mode. For the transmission speed setting in other modes, refer to
WSW19.
• Selectors 1 through 8: First and last choices of transmission speed for fallback
These selectors are used to set the modem speed range. With the first transmission speed
choice specified by selectors 1 through 4, the machine attempts to establish the
transmission link via the modem. If the establishment fails, the machine automatically
steps down to the next highest speed and attempts to establish the transmission link again.
The machine repeats this sequence while stepping down the transmission speed to the last
choice specified by selectors 5 through 8.
If the modem always falls back to a low transmission speed (e.g., 24,000 bps), set the first
transmission speed choice to the lower one (e.g., modify it from 31,200 bps to 26,400 bps)
in order to deactivate the high-speed modem function and reduce the training time for
shorter transmission time.
WSW39 will be limited by selectors 3 through 8 on WSW40.
WSW39
(V.34 transmission speed)
Function
App. 4-44
Setting and Specifications
No. 1 2 3 4
No. 5 6 7 8
0 0 0 0 :
0 0 0 1 :
0 0 1 0 :
0 0 1 1 :
0 1 0 0 :
0 1 0 1 :
0 1 1 0 :
0 1 1 1 :
1 0 0 0 :
1 0 0 1 :
1 0 1 0 :
1 0 1 1 :
1 1 0 0 :
1 1 0 1 :
1 1 1 0 :
1 1 1 1 :
2,400 bps
4,800 bps
7,200 bps
9,600 bps
12,000 bps
14,400 bps
16,800 bps
19,200 bps
21,600 bps
24,000 bps
26,400 bps
28,800 bps
31,200 bps
33,600 bps
33,600 bps
33,600 bps
Confidential