7.1.d - Serial Port Pin Outs
The pin assignments for the Keyspan USB Twin Serial Adapter's female Din8 port are illustrated
below:
Keyspan USB Twin Serial Adapter's
female Din8 port
Pin
Name
Signal Designation
1
HSKo
Handshake Output (DTR)
2
HSKi
Handshake Input (CTS)
3
TxD-
Transmit Data (-)
4
GND
Ground
5
RxD-
Receive Data (-)
6
TxD+
Transmit Data (+)
7
GPi
General Purpose Input (DCD)
8
RxD+
Receive Data (+)
In order to ensure compliance with emission specifications, cables should be shielded using braided
shields and metal hoods with 360° contact between the shields and hoods.
External Loopback Connector Information
allows you to perform two types of loopback tests - internal and
external. The external test requires the use of a loopback cable. This cable is typically identical to
any standard Mac male Din8 to male Din8 'printer cable' (aka ImageWriter II cable).
Keyspan:USB Twin Serial Adapter for Mac OS-v1.9 User Manual
This User Manual applies to the Keyspan USB Twin Serial Adapter Software for Mac OS.
(rev 02may12JA)
Page 31
