Sharp FO-2970M Service Manual - Page 26
SW6 No. 5 ~ No. 8 Modem speed DCS data reception speed
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FO-2970MU SW5 No. 2 Date format Used to select date display/print formats. 0: DAY-Month-Year 1: Month-DAY-Year SW5 No. 3 Sender's information transmit When it is set at 0, sender's name, sending page number and so on are automatically printed in the recording paper on the receiving side during transmission. Thus, the sender can be known on the receiving side. 0: Applied 1: Not applied SW5 No. 4 Footer print When set to "1", the date of reception, the sender machine No., and the page No. are automatically recorded at the end of reception. SW5 No. 5 Reserved Set to "0". SW5 No. 6 Substitute reception Selection of substitute reception in the case of recording paper exhausted or paper jam. If set to "NO", auto receive is disabled even when the receive memory is ready to receive. Substitute reception is not performed even during receive operation. SW5 No. 7 Substitute reception conditions Selection of substitute reception according to existence of TEL number from transmitting side. Initial setting allows substitute reception without CSI. If set to "no", the receiver cannot receive any documents SW5 No. 8 CSI transmission CSI signal contains the sender's phone number registered in the machine. If this switch is set to "1", no sender's name will be printed at the receiving side. SW6 No. 1 H2 mode Used to determine reception of H2 mode (15 sec transmission mode). When set to OFF, H2 mode reception is inhibited even though the transmitting machine has H2 mode function. SW6 No. 2 MH fixed Normally set to allow automatic selection of MH and MR mode according to the remote side. If set to 1, the mode is fixed to MH and is useful if the remote side is a MH only unit ; or a lot of image distortion is met due to a bad line. SW6 No. 3, No. 4 Reserved Set to "0". SW6 No. 5 ~ No. 8 Modem speed (DCS data reception speed) Used to determine the initial modem speed. The default is 14400BPS(V.17). It may be necessary to program it to a slower speed when frequent line fallback is encountered, in order to save the time required for the fallback procedure. SW7 No. 1, No. 2 Reception speed fixed The transferable speed of modem in the receiving mode is set. SW7 No. 3 DIS receive acknowledgement during G3 transmission Used to make a choice of whether reception of NSF (DIS) is acknowledged after receiving two NSFs (DISs) or receiving one NSF (two DISs). It may be useful for overseas communication to avoid an echo suppression problem, if set to 1. SW7 No. 4 Non modulated carrier for V.29 transmission mode Though transmission of a non-modulated carrier is not required for transmission by the V29 modem according to the CCITT Recommendation, it may be permitted to send a non-modulated carrier before the image signal to avoid an echo suppression problem. It may be useful for overseas communication to avoid an echo suppression problem, if set to 1. SW7 No. 5 EOL detect timer 25 seconds or 13 seconds are selected for the detection timer of EOL (end of line). This is effective against communication trouble on a specific type of long EOL. 0: 13 seconds 1: 25 seconds SW7 No. 6 Protocol monitor Normally set to "0". If set to "1", communication can be checked, in case of troubles, without using a G3 tester or other tools. When communication FSK data transmission or reception is made, the data is taken into buffer. When communication is finished, the data analyzed and printed out. When data is received with the line monitor (SW7-No.7) set to "1" the reception level is also printed out. SW7 No. 7 Line monitor Normally set to "0". If set to "1", the transmission speed and the reception level are displayed on the LCD. Used for line tests. SW7 No. 8 Length limitation of copy/send/receive Used to set the maximum page length. To avoid possible paper jam, the page length is normally limited to 1m for copy or transmit, and 1.5 meters for receive. It is possible to set it to "No limit" to transmit/receive a long document, such as a computer print form, etc. (In this case, the receiver/transmitter must also be set to no limit.) SW8 No. 1, No. 2 Digital line equalization setting (Reception) The specific line equalizer is inserted. No. 1 No. 2 0 0 0 1 1 0 0 1 The line equalizer built in the modem is turned off. Line equalizer corresponding to 1.8 km Line equalizer corresponding to 3.6 km Line equalizer corresponding to 7.2 km SW8 No. 3 Dial pausing (sec/pause) Pauses can be inserted between telephone numbers of direct dial connection. Selection of 4 sec or 2 sec pause is available. SW8 No. 4 ~ No. 8 Signal transmission level Used to control the signal transmission level in the range of -0dB to -31dB. SW9 No. 1, No. 2 CED tone signal interval For international communication, the 2100Hz CED tone may act as an echo suppresser switch, causing a communication problem. Though this soft switch is normally set to "00", it should be change the time between CED tone and DIS signal from 75ms to 1000ms to eliminate the communication problem caused by echo. SW9 No. 3 Equalizer freeze control (MODEM) This switch is used to perform reception operation by fixing the equalizer control of modem for the line which is always in an unfavorable state and picture cannot be received. Usually, the control is executed according to the state of line where the equalizer setting is changed always. SW9 No. 4 Equalizer freeze conditions Setting which specifies SW9 No.3 control only in condition of 7200bps modem speed. SW9 No. 5 CED detection time The detection time of the CED signal from the called side in the auto calling mode is set. SW9 No. 6, No. 7 Reserved Set to "0". SW9 No. 8 Busy tone detection (after auto dial) this is used to set busy tone detection in auto dialing. SW10 No.1, No. 2 Reserved Set to "0". 2 - 22