Brother International 9870 Service Manual - Page 127
These selectors set the short-circuiting time length of the telephone line La or Lb to ground.
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Selector No. 1 | 4 5 6 7 8 WSW04 (TRANSFER facility setting) Function Setting and Specifications Not used. Earth time length for earth function Break time length for flash function No. 5 6 00 01 10 11 No. 7 8 00 01 10 11 : 200 ms : 300 ms : 500 ms : 700 ms : 80 ms : 110 ms : 250 ms : 500 ms NOTE: Selectors 5 through 8 are not applicable in those countries where no transfer facility is supported. l Selectors 5 and 6: Earth time length for earth function These selectors set the short-circuiting time length of the telephone line (La or Lb) to ground. This setting is effective only when the earth function is selected for the R key by using the function switch. l Selectors 7 and 8: Break time length for flash function These selectors set the break time length. This setting is effective only when the flash function is selected for the R key by using the function switch. V - 15