DB-9 4-Wire Hardware Handshaking (DTR) Cable

The following four-wire cable is often sufficient for a terminal, printer, or other DTE device configured for DTR (hardware) flow control. However, some terminals and printers may have other cable requirements. Consult your terminal or printer manual for this information. For more universal compatibility, use a fully-wired DB-9 terminal/printer cable.

Terminal/Printer Cable with DTR Handshaking
DB-9 Female
(Digi End)
  DB-9 Male
(Peripheral)
Signal Pin Pin Signal

RxD

2

connected to

3

TxD

TxD

3

connected to

2

RxD

SG

5

connected to

5

SG

CTS

8

connected to

4

DTR

GND

Shell

connected (via shield) to

Shell

GND

 

jumpered

7+8

RTS+CTS