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NTI AUDIO/HD VIDEO MATRIX SWITCH
30
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 --
Pinouts for typical DCE to DTE cable for CPU connection
VEEMUX (DCE) to 9 PIN DTE (PS2 or SUN) VEEMUX (DCE) to 25 PIN DTE (MAC)
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
23
4
5
6
7
8
9
1
2
345
6
7
89
13
1211
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