Chapter 2: Hardware Components
2-10
DB-9 Serial RS-232 Cable
The Serial RS-232 9-pin cable with a DB-9 male connector (with RS-232 interface) is used to con-
nect the
Tenor BX
to your PC’s asynchronous serial port. The pin order for DB-9 male and female
connectors are shown in
Figure 2-9
and
Figure 2-10
.
Figure 2-9
DB-9 Male Connector Pin Order
Figure 2-10
DB-9 Female Connector Pin Order
Figure 2-11
DB-9 Connector Pinouts
Table 2-8
DB-9 Connector Pinouts
Pin #
Function
Description
Pin #
1
DTR
Data Terminal Ready
1
2
TXD
Transmit Data
2
3
RXD
Receive Data
3
4
CD
Carrier Detect
4
5
GND
Signal Ground
5
6
N.C.
No Connect
6
7
N.C.
No Connect
7
8
N.C. No
Connect
8
9
N.C.
No Connect
9
1 2 3 4 5
6 7 8 9
5 4 3 2 1
9 8 7 6
P in #
Con nects to
P in #
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
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