NTI AUDIO/HD VIDEO MATRIX SWITCH
39
RS232 CONNECTION CABLES
Pinout of RS232 port on VEEMUX-A
The VEEMUX-A RS232 serial port is a DB-9F (female) connector configured as a DCE (data communication equipment) port. The
RS232 port interface signals are listed below, including equivalent CCITT V.24 identification, and signal direction:
DB-9F
pin #
Common
name
EIA
name
CCITT
name
Function
Direction
1 N/a
N/a
N/a
No
connection
--
2 TxD BA
103
Transmit
Data
Output
3 RxD BB
104
Receive
Data
Input
4
DSR
CC
107
Data Set Ready
Input
5 SG AB
102
Signal
Ground
–
6 DTR
CD
108.2
Data
Terminal
Ready
Output
7
CTS
CB
106
Clear To Send
Input
8
RTS
CA
105
Request To Send
Output
9 N/a
N/a
N/a
No
connection
--
Specifications for Straight-Through Serial Cable for CPU connection
VEEMUX-A to PS2 or SUN CPU (9-PIN) VEEMUX-A to MAC (25 PIN)
VEEMUX
PS/2 or SUN CPU
VEEMUX
MAC CPU
9 pin
Signal
9 pin
9 pin
Signal
25 pin
Function
Pin #
Direction Pin #
Function
Function
Pin #
Direction Pin # Function
RxD
3
3
TxD RxD
3
2
TxD
TxD 2
2 RxD
TxD 2
3 RxD
CTS 7
7 RTS
CTS 7
4 RTS
RTS 8
8 CTS
RTS 8
5 CTS
DSR 4
4 DTR
DSR 4
20
DTR
DTR 6
6 DSR
DTR 6
6 DSR
SG
5
5
SG
SG
5
7
SG
1
Mating Face
of a 9D Male
2
3
4
5
6
7 8
9
1
2
3
4
5
6
7
8
9
13
12
11
10
14 15 16 17 18 19 20 21 22 23 24 25
Mating Face of DB25 Male
9 PIN
DTE
9 PIN
DTE
VEEMUX
PS/2 or SUN CPU
MAC CPU
25 PIN DTE
9 PIN
DTE
VEEMUX
