5-6 Installation procedures
555-4001-112 Standard 05.01 March 1995
Table 5-1xxx
Standard RS-232-C Signals
Circuit Designation
Pin
Signal Source
EIA
COMMON
CCITT
DTE
DCE
NAME
BA
TXD
103
2
X
Transmit Data
BB
RXD
104
3
X
Receive Data
CA
RTS
105
4
X
Request to Send
CB
CTS
106
5
Clear to Send
CC
DSR
107
6
X
Data Set Ready
AB
GND
102
7
Signal Ground
CD
DTR
108.2
20
X
Data Terminal
Ready
CE
RI
125
22
X
Ring Indicator
Table 5-2xxx
Apple Macintosh to TADO
9-Pin Connector (From Terminal)
RS-232-C Connector (at TADO Point)
Pin 3
Pin 7
Pin 5
Pin 2
Pin 9
Pin 3
Strap Pins 4 and 5 together. Strap Pins
6, 8, and 20 together.
Note: A 9-pin connector cable from Apple is required to connect the Apple
Macintosh to the RS-232-C connector in the TADO.