Brother International MFC 8890DW Service Manual - Page 449

Selector No. Function Setting and Specifications 1 Frame length selection 0: 256 octets 1: 64 octets 2 Use of non-standard commands 0: Allowed 1: Prohibited 3 No. of retries 4 No. 3 0 0 1 1 4 0: 4 times 1: 3 times 0: 2 times 1: 1 times 5 T5 timer 0: 300 sec. 1: 60 sec. 6 T1 timer 0: 35 sec. 1: 40 sec. No. 7 8 0 0: 55 sec. (in U.S.A. and Canadian 7 Timeout for response from the models) called station in automatic 60 sec. (in other models) 8 sending mode 0 1: 140 sec. 1 0: 90 sec. 1 1: 35 sec. Note: • Selectors 1 through 5 are not applicable in those models which do not support ECM. • Selector 1: Frame length selection Usually a single frame consists of 256 octets (1 octet = 8 bits). For communications lines with higher bit error rate, however, set selector 1 to "1" so that the machine can divide a message into 64-octet frames. Remarks: The error correction mode (ECM) is a facsimile transmission manner in which the machine divides a message into frames for transmission so that if any data error occurs on the transmission line, the machine retransmits only those frames containing the error data. • Selector 2: Use of non-standard commands If this selector is set to "0," the machine can use non-standard commands (the machine's native-mode commands, e.g., NSF, NSC, and NSS) for communications. If it is set to "1," the machine will use standard commands only. • Selectors 3 and 4: No. of retries These selectors set the number of retries in each specified modem transmission speed. • Selector 5: T5 timer This selector sets the time length for the T5 timer. • Selector 6: T1 timer This selector sets the time length for the T1 timer. • Selectors 7 and 8: Timeout for response from the called station in automatic sending mode If the machine (calling station) receives no response (no G3 command) from the called terminal in automatic sending mode for the period specified by these selectors, it disconnects the line. App. 1-15 Confidential