Sharp FO-6700 Service Manual download pdf (Page 36)

FO-6700U

FO-67DL

SW6 No. 1 JBIG (Joint Bi-level Image Group)

An image compression encoding method recommended by ITU-T.

It realizes 2-second transmission when the power is turned on.

SW6 No. 2 JBIG option

An optional function for JBIG.

SW6 No. 3 MMR

MMR (Modified MR) selects presence of the compression function.

SW6 No. 4 MR

MR (Modified READ) selects presence of the compression function.

SW6 No. 5 ~ No. 8 Modem 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 acknowledge during G3 transmission

Used to make a choice of whether reception of NSF (DIS) is acknowl-

edged after receiving two NSFs (DISs) or receiving one NSF (two DISs).

It may be useful for overseas communication to avoid an echo sup-

pression problem, if set to 1.

SW7 No. 4 Non-modulated carrier in V.29 transmission mode

Though transmission of a non-modulated carrier is not required for trans-

mission 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 over-

seas communication to avoid an echo sup-pression problem, if set to 1.

SW7 No. 5 CNG send when manual TX

CNG signal sending ON/OFF in case of manual transmission is set.

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 recep-

tion level are displayed on the LCD. Used for line tests.

SW7 No. 8 Max. length for TX/RX/Copy

Used to set the maximum page length.

To avoid possible paper jam, the page length is normally limited to 432

mm 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/transmit-

ter must also be set to no limit.)

SW8 No. 1, No. 2 Compromised equalizer

The specific line equalizer is inserted.

No. 1 No. 2

0 0 The line equalizer built in the modem is turned off.

0 1 Line equalizer corresponding to 1.8 km

1 0 Line equalizer corresponding to 3.6 km

0 1 Line equalizer corresponding to 7.2 km

SW8 No. 3 H2 mode

Used to determine H2 mode (15sec transmission mode). When set to

OFF, H2 mode is inhibited even though the transmitting machine has

H2 mode.

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 "0", it should be set to "1" so as to change

the time between CED tone and DIS signal from 75ms to 500ms to elimi-

nate the communication problem caused by echo.

SW9 No. 3 Equalizer freeze

This switch is used to perform reception operation by fixing the equal-

izer control of modem for the line which is always in an unfavorable state

and picture cannot be received. Usually, the control is executed accord-

ing 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 Alarm buzzer

The length of the buzzer for normal end of operation is set.

SW9 No. 8 Action when RTN received

The operation is set when the RTN signal is received in the G3 transmis-

sion mode.

SW10 No. 1 ~ No. 4 Memory retransmission times

The number of memory retransmissions is set.

SW10 No. 5 ~ No. 8 Memory retransmission interval

The interval between memory retransmissions is set.

SW11 No. 1 ~ No. 4 V.34 mode transmission speed

Used to determine the initial modem speed when communication method

is V.34 transmission mode.

SW11 No. 5 ~ No. 8 V.34 mode receiving speed

Used to determine the initial modem speed when communication method

is V.34 reception mode.

SW12 No. 1 V.34 mode function in case of manual communication

Used to select whether the V.34 mode is made valid when automatically

transmitting/receiving.

SW12 No. 2 V.34 mode function

Used to select the V.34 mode for communication when set to “1”, com-

munication method is V.34 mode..

SW12 No. 3 V.34 control channel communication speed

Used to select the control channel communication speed for V.34 mode.

SW12 No. 4, No. 5 EOL detection timer

Used to make a choice of whether to use the 25-second or 13-second

timer for detection of End of line This is effective to override communica-

tion failures with some facsimile models that have longer End of line

detection.

SW12 No. 6, No. 7 Processing of DIS reception after DIS trans-

mission

When receiving , operation in case of DIS reception after DIS transmis-

sion is selected. Retransmitting command: To retransmit DIS in disre-

gard of DIS reception.

Breaking circuit: To break circuit instantly. (Abnormal finish)

T. 30: To operate in accordance with T.30.

T. 30+α: To operate in accordance with T.30+α. (To operate differently

according to cases.)

SW12 No. 8 The change to DB from DP by

When setting to 1, the mode is changed by pressing the key from the

pulse dial mode to the tone dial mode.

SW13 No. 1 ~ No. 5 DTMF output level (High)

To set the level to output high group DTMF signals. –15 to 0 dBm (0.5

dBm unit)

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Sharp FO-6700 Service Manual Page 36

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