Specifications

SERIES 3/3A PROGRAMMING GUIDE
A - 6
Safety: EN60950
Physical Pod with lead for connection to the Series 3 or LIF adaptor.
Pod incorporates "auto wake up" switch.
Replaceable lead to connect the pod to the other computer or peripheral.
Complete connection is functionally equivalent to a 'null modem' cable.
Interface RS232.
Memory Masked ROM in the 3Link pod. This contains the script language and
supporting communications software. The pod appears as SSD drive C.
Protocols XMODEM and YMODEM, giving compatibility with most computer
communications software.
Language Full script language with sample scripts allows automated log-on to
electronic mail and other systems, and control of modems.
Communications
software
Link and/or RCom and/or PsiWin software supplied provides a simple
interface for exchanging information with IBM PC compatibles and with the
Apple Macintosh, giving direct remote file access.
Connectors - IBM PC 9-pin D-type (for connection to an IBM AT type PC or modem serial
port).
25-pin D-type (for connection to an IBM XT type PC or modem serial port.
Note:
The model currently distributed through retail channels only has a
9-pin D-type connector, but the Serial 3Link assembly is available as
separate cables and pod - see below).
Pin name Description Pin number Direction
PC - 3Link
FG Frame Ground
(earth)
1

TD Transmitted Data 2
→
RD Received Data 3
←
RTS Request To Send 4
→
CTS Clear To Send 5
←
DSR Data Set Ready 6
←
SG Signal Ground
(common return)
7

DTR Data Terminal Ready 20
→
Connector - Apple Mac 8-pin round
Connectors
- both versions
6-way two row rectangular (female) plug
for connection to the Series 3 serial port, or Psion LIF adaptor (Work
about
).
See the 'Reduced External Expansion' section of the 'SIBO Expansion Ports'
chapter in the
Hardware Reference
manual for pinout details.
9-pin round (Internal connector on the 3Link pod)
Pin name Description Pin number Direction
Series 3 - Other
DCD Data Carrier Detect 1
←
RD Received Data 2
←
TD Transmitted Data 3
→
DTR Data terminal Ready 4
→
SG Signal Ground
(common return)
5
→
DSR Data Set Ready 6
←
RTS Request To Send 7
→
CTS Clear To Send 8
←
RI Ring Indicator 9
←
See below for diagram of pinout.