Casio QT-2100 Service Manual page 38

8. ON LINE
Only the RS-232C Com1 port can be connected with a modem or perssonal computer.
8-1. Direct connection to PC
1 Connection layout
QT2100
KP/M CHK/BM
Slip
2 PC Cable wiring
QT-2100 (Com1)
Pin No. Signal name
3 SD/TXD
2 RD/RXD
7 RS/RTS
8 CS/CTS
1 CD/DCD
4 ER/DTR
6 DR/DSR
9 CI/RI
5 GND
QT2100 QT2100
CHK/M
Slip
Using Com1 port
— 36 —
PC
QT2100
KP/BM
Slip
R/J
PC
Pin No. Pin No.
(DSUB9) (DSUB25)
3 2
2 3
7 4
8 5
1 8
4 20
6 6
- 22
5 7
RS-232C
Signal name
SD
RD
RS
CS
CD
ER
DR
CI
GND