Brother International DCP1000 Service Manual - Page 181

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Selector No. 1 2 3 4 5 6 7 8 WSW38 (Function setting 16 in V. 34 mode) 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 Not used. Setting and Specifications No. 1 2 0 X : Automatic 1 0 : Fixed to 4 points 1 1 : Fixed to 16 points 0: Normal - 7 db 1: Normal 0: 2400 bps 1: 4800 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 NOTE: WSW38 takes effect only in V. 34 mode. • Selectors 1 and 2: Setting of the equalizer These selectors set the equalizer's training level to be applied if the facsimile equipment 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 1800 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 33600 bps to 28800 bps by one-time fallback. • Selectors 5 and 6: Automatic control of modem's EQM gain for proper transmission speed choice 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. 38

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WSW38
(Function
setting
16
in
V.
34
mode)
Selector
No.
Function
Setting
and
Specifications
No.
1
2
1
0
X
:
Automatic
2
Setting
of
the
equalizer
1
0
:
Fixed
to
4
points
1
1
:
Fixed
to
16
points
3
Sending
level
of
guard
tone
at
phase
2
0:
Normal
-
7
db
1:
Normal
4
Stepping
down
the
transmission
speed
at
fallback
each
0:
2400
bps
1:
4800
bps
No.
5
6
0
0
:
For
higher
transmission
speed
than
the
current
setting
5
Automatic
control
of
modem's
0
1
:
No
change
from
the
current
6
EQM
gain
for
proper
transmission
speed
choice
setting
1
0
:
For
lower
transmission
speed
than
the
current
setting
1
1
:
For
further
lower
transmission
than
the
setting
made
by
1,
0
7
Redialing
when
a
communications
error
occurs
0:
ON
1:
OFF
8
Not
used.
NOTE:
WSW38
takes
effect
only
in
V.
34
mode.
•
Selectors
1
and
2:
Setting
of
the
equalizer
These
selectors
set
the
equalizer's
training
level
to
be
applied
if
the
facsimile
equipment
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
1800
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
33600
bps
to
28800
bps
by
one-time
fallback.
•
Selectors
5
and
6:
Automatic
control
of
modem's
EQM
gain
for
proper
transmission
speed
choice
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.
38