Brother MFC-9320CW Service Manual page 548

WSW38 (V.34 transmission settings)
■
Selector No.
1
Setting of the equalizer
2
3 Sending level of guard tone at phase 2
Stepping down the transmission
4
speed at fallback each
5 Automatic control of modem's EQM
gain for proper transmission speed
6 choice
Redialing when a communications
7
error occurs
8 Detection of CED for stopping CNG
- Selectors 1 and 2: Setting of the equalizer
These selectors set the equalizer's training level to be applied if the machine fails to send training
due to weak line connection. If these selectors are set to "0, X," the modem will automatically set
the appropriate training level.
- Selector 3: Sending level of guard tone at phase 2
This selector sets the sending level of guard tone for 1,800 Hz to be sent at Phase 2 in the V. 34 mode.
- Selector 4: Stepping down the transmission speed at fallback each
This selector determines how much the modem steps down the transmission speed at fallback when
called by the remote station. If this selector is set to "1," the modem may step down the
transmission speed from 33,600 bps to 28,800 bps by one-time fallback.
- Selectors 5 and 6: Automatic control of modem's EQM gain for proper transmission
These selectors determine how the modem controls the EQM (Eye Quality Monitor) gain for proper
choice of the transmission speed, which applies if the modem selects higher transmission speed
than the possible speed so that it always repeats falling back.
- Selector 8: Detection of CED for stopping CNG
If this selector is set to "0," the detection time of CED specified by WSW43, selectors 4 and 5 will apply.
Function
speed choice
App.1-34
Setting and Specifications
No. 1 2
0 0: Automatic
0 1: Automatic
1 0: Fixed to 4 points
1 1: Fixed to 16 points
0: Normal - 7 db
1: Normal
0: 2,400 bps
1: 4,800 bps
No. 5 6
0 0: For higher transmission speed
than the current setting
0 1: No change from the current
setting
1 0: For lower transmission speed
than the current setting
1 1: For further lower transmission
than the setting made by 1, 0
0: ON
1: OFF
0: ON
1: OFF
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