Brother FAX-170 Service Manual page 107

Selector
No.
1
Frequency band range
2
3 Line current detection
4
2nd dial tone detection level
|
6
1st dial tone interrupt detecting
7
time
8 Not used.
NOTE: The WSW07 is not applicable in those countries where no dial tone or line current de-
tection is supported, e.g., U.S.A.
Selectors 1 and 2: Frequency band range
These selectors set the frequency band for the 1st dial tone and the busy tone (before dial-
ing) to be detected.
This setting is effective only when selectors 1 through 3 of WSW05 are set to "1, 1, 1."
Selector 3: Line current detection
This selector determines whether or not the equipment should detect a line current before
starting dialing.
Selectors 4 through 6:
These selectors set the detection level of the 2nd dial tone.
Selector 7: 1st dial tone interrupt detecting time
This selector sets the allowable time length of an interrupt which should not be interpreted as
an interrupt in the 1st dial tone dialing.
WSW07
(Dial tone setting 1)
Function
(Z = 600 Ω)
2nd dial tone detection level
V – 19
Setting and Specifications
No. 1 2
0 0 : Narrows by 10 Hz
0 1 : Initial value
1 X : Widens by 10 Hz
0: No 1: Yes
No. 4 5 6
0 0 0 : -21 dBm
0 0 1 : -24 dBm
0 1 0 : -27 dBm
0 1 1 : -30 dBm
1 0 0 : -33 dBm
1 0 1 : -36 dBm
1 1 0 : -39 dBm
1 1 1 : -42 dBm
0: 30 ms 1: 50 ms