Brother mfc8440 Service Manual page 337
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Also See for mfc8440:
- User manual (426 pages) ,
- Software user's manual (183 pages) ,
- Quick setup manual (52 pages)
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APPENDIX 3 FIRMWARE SWITCHS (WSW)
Selector
No.
1
2
3
4
5
6
7
8
NOTE:
WSW38 takes effect only in the V. 34 mode.
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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.
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Selector 3:
This selector sets the sending level of guard tone for 1800 Hz to be sent at Phase 2 in the V.
34 mode.
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Selector 4:
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 33600 bps to 28800 bps by one-time fallback.
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Selectors 5 and 6: Automatic control of modem's EQM gain for proper transmission speed
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.
WSW38 (Function setting 16)
Function
Setting of the equalizer
Sending level of guard tone at
phase 2
Stepping down the transmission
speed at fallback each
Automatic control of modem's
EQM gain for proper transmission
speed choice
Redialing when a communications
error occurs
CED detection for CNG stoppage
Sending level of guard tone at phase 2
Stepping down the transmission speed at fallback each
choice
Setting and Specifications
No. 1
2
0
X
1
0
1
1
0: Normal - 7 db
0: 2400 bps
No. 5
6
0
0
0
1
1
0
1
1
0: ON
0: ON
A-40
Automatic
:
Fixed to 4 points
:
Fixed to 16 points
1:
Normal
1:
4800 bps
For higher transmission speed
than the current setting
:
No change from the current
setting
:
For lower transmission speed
than the current setting
:
For further lower transmission
than the setting made by 1, 0
1:
OFF
1:
OFF
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