Sharp FACSIMILE FO-4500 Service Manual page 47

SW8 No. 1, No. 2 Compromised Equalizer
The following 4 settings can be made by combining the No. 1 and No.
2 settings.
No. 1 No. 2
0 0 The line equalizer built in the modem is turned off.
0 1 The line equalizer built in the modem is turned on. At
this time, the equalizer characteristic corresponds to 4
links of NTT line (Japan).
1 0 These 2 settings are for extension, and they are not
0 1 used at present. (If settings are made, the operation
can be not guaranteed.)
SW8 No. 3 Reserved
Set to "0".
SW8 No. 4 Pause time
This relates to the pause code of dial signal. When this switch is set to
"1", the 1st pause is 2 seconds, and the 2nd and subsequent pauses
are 1 second. In case of "0", the 1st pause is 4 seconds, and the 2nd
and subsequent pauses are 2 seconds.
SW8 No. 5 ~ No. 8 Signal transmission level
Used to control the signal transmission level in the range of –0dB to
–15dB.
SW9 No. 1 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 "0", it should be set to "1" so
as to change the time between CED tone and DIS signal from 75ms
to 500ms to eliminate the communication problem caused by echo.
SW9 No. 2 CI signal OFF detect enable time
Used to set the continuous detection time during OFF period of CI
signal. Normally set to 700ms, where the short ring (500ms: OFF
period) cannot be detected. Therefore, selection of 350ms is allowed.
SW9 No. 3 Equalization freeze
This switch is used to perform reception operation by fixing the equal-
izer control of modem for the line which is always in unfavorable state
and picture cannot be received. Usually, the control is executed ac-
cording to the state of line where the equalizer setting is changed
always.
SW9 No. 4 Equalization freeze conditions
Setting which specifies SW9 No.3 control only in condition of 7200bps
modem speed.
SW9 No. 5 Reserved
Set to "0".
SW9 No. 6 CED detection time.
The detection time of the CED signal from the called side in the auto
calling mode is set.
SW9 No. 7, No. 8 Reserved
Set to "0".
SW10 No. 1 ~ No. 8 Reserved
Set to "0".
SW11 No. 1 ~ No. 4 Memory retransmission times
The number of memory retransmissions is set.
SW11 No. 5 ~ No. 8 Memory retransmission interval
The interval between memory retransmissions is set.
SW12 No. 1, No. 2 Reserved
Set to "0".
SW12 No. 3, No. 4 Alarm buzzer
The sounding length of the buzzer for normal end of operation is set.
SW12 No. 5 Action when RTN received
The operation is set when the RTN signal is received in the G3
transmission mode.
SW12 No. 6 ~ No. 8 Reserved
Set to "0".
SW13 No. 1 ~ No. 8 Reserved
Set to "0".
SW14 No. 1 Reserved
Set to "0".
SW14 No. 2 Reserved
Set to "1".
SW14 No. 3 Reserved
Set to "0".
SW14 No. 4 Reserved
Set to "1".
SW14 No. 5, No. 6 Reserved
Set to "0".
SW14 No. 7 Reserved
Set to "1".
SW14 No. 8 Reserved
Set to "0".
SW15 No. 1 Reserved
Set to "0".
SW15 No. 2 Reserved
Set to "1".
SW15 No. 3, No. 4 Reserved
Set to "0".
SW15 No. 5, No. 6 Reserved
Set to "1".
SW15 No. 7, No. 8 Reserved
Set to "0".
SW16 No. 1 ~ No. 3 Reserved
Set to "0".
SW16 No. 4 Reserved
Set to "1".
SW16 No. 5 ~ No. 8 Reserved
Set to "0".
SW17 No. 1 Reserved
Set to "0".
SW17 No. 2 Reserved
Set to "1".
SW17 No. 3 Reserved
Set to "0".
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FO-4500H