Quatech Connector Pinout: DB-9M connector:
RS-232 for SSCF-100 and DSCF-100

Pin

Name

Function

1

no connect

none

2

RxD

Receive Data In

3

TxD

Transmit Data Out

4

no connect

none

5

ISOGND

ISOLATED GROUND

6

no connect

none

7

RTS

Request To Send output

8

CTS

Clear To Send input

9

no connect

none

Shell

no connect

none