Brother DCP-6690CW, Service Manual, Page: 447 / 506

App. 4-17 Confidential
WSW12
(Signal detection condition setting)
sec.: second(s), ms: millisecond(s)
*1000 milliseconds in Chinese models.
• Selectors 1 through 4: Min. detection period required for interpreting incoming calling signal (CI)
as OFF
Max. detection period for incoming calling signal (CI) being OFF
If the machine detects the OFF state of a CI signal for the period greater than the value set
by selectors 1 and 2 and less than the value set by selectors 3 and 4, it interprets the CI
signal as OFF.
• Selectors 5 and 6: Min. detection period required for acknowledging incoming calling signal (CI)
as ON
These selectors set the period required to make the machine acknowledge itself to be
called. That is, if the machine continuously detects a CI signal with the frequency set by
selectors 1 through 4 on WSW14 during the period set by these selectors 5 and 6, then it
acknowledges the call.
• Selector 7: Line connection timing (Not used.)
If a line is connected in a ringer-ON period, FAX models equipped with an SDAA circuit
may malfunction due to the ringer voltage. To make the line connection stable, this selector
should be set to "0" so that a line is connected in a ringer-OFF period.
Selector
No.
Function Setting and Specifications
1
2
Min. detection period required for
interpreting incoming calling
signal (CI) as OFF
No. 1 2
0 0 : 1500 ms
0 1 : 500 ms
1 0 : 700 ms
1 1 : 900 ms
3
4
Max. detection period for
incoming calling signal (CI) being
OFF
No. 3 4
0 0 : 6 sec.
0 1 : 7 sec.
1 0 : 9 sec.
1 1 : 11 sec.
5
6
Min. detection period required for
acknowledging incoming calling
signal (CI) as ON
No. 5 6
0 0 : 800 ms (1000 ms*)
0 1 : 200 ms
1 0 : 250 ms
1 1 : 150 ms
7
Line connection timing
(Not used.)
0: Ringer-OFF 1: Ringer-ON
period (default) period
8 Not used.