Specifications

R-113
QT-2100 Reference Manual
3-5-2-2. Online interface
Only the RS-232C COM 1 port can be connected with a modem or personal computer.
1) Specification of RS-232C COM 1 port
Communication method: Half duplex communication
Configuration of connection: Point-to point
Line type: Public lines/exclusive lines
Starting method: Center (host computer) based start up
Protocol: Async.
Communication speed: 2400/4800/9600/19200/38400/57600/115200 bps
Error control: CRC-128 or CRC-1024
Text length: 128 or 1024 bytes
2) The cable diagram between QT-2100 and MODEM
3) The cable diagram between QT-2100 and PC
QT-2100 (COM 1) MODEM
Pin Signal Signal Pin
No. name name No.
3 SD/TDX SD 2
2 RD/RXD RD 3
7 RS/RTS RS 4
8 CS/CTS CS 5
1 CD/DCD CD 8
4 ER/DTR ER 20
6 DR/DSR DR 6
9 CI/RI CI 22
5 GND GND 7
(DSUB25)
QT-2100 (COM 1) PC
Pin Signal Signal Pin Pin
No. name name No. No.
3 SD/TDX SD 3 2
2 RD/RXD RD 2 3
7 RS/RTS RS 7 4
8 CS/CTS CS 8 5
1 CD/DCD CD 1 8
4 ER/DTR ER 4 20
6 DR/DSR DR 6 6
9 CI/RI CI 22
5 GND GND 5 7
(DSUB9) (DSUB25)