Read Sharp ER-A440 (serv.man3) Service Manual online
2. Connection between the terminal and
MODEM
SD : TRANSMITTED DATA
RD : RECEIVED DATA
DTR : DATA TERMINAL READY
DSR : DATA SET READY
RTS : REQUEST TO SEND
DCD: DATA CARRIER DETECTOR
CTS : CLEAR TO SEND
CI
RD : RECEIVED DATA
DTR : DATA TERMINAL READY
DSR : DATA SET READY
RTS : REQUEST TO SEND
DCD: DATA CARRIER DETECTOR
CTS : CLEAR TO SEND
CI
: CALLING INDICATOR
FG : FRAME GROUND
SD
SD
RD
SG
RD
3
2
4
6
7
1
8
5
2
3
20
6
4
8
5
7
RTS
DCD
DTR
DSR
CTS
CI
22
9
SG
RTS
DCD
DTR
DSR
CTS
CI
FG
1
FRAME GROUND is connected
to the shield of the cable.
to the shield of the cable.
MODEM
TERMINAL
25PIN D-SUB
9PIN D-SUB
– 3 –
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