Cable Construction
Construct a custom coax cable adapter as follows:
•
On the
Frame
end of the coax cable, no change to the BNC cable is required. Ensure
that the pin and shield are properly connected.
•
On the
PC
end of the cable, make the following connections according to whether your
PC port uses a 9-pin “D” or a 25-pin “D” connector:
Important!
Regardless of whether your PC port uses a 9-pin “D” or a 25-pin
“D” connector, the pin-out configuration may vary. Always check
your PC’s
Technical Guide
to determine the correct pin-outs for
your computer. The
RX
and
GND
pin-outs will vary from
machine to machine.
9-Pin Connections
The following diagram illustrates a
sample
connection using a
typical
pin-out configuration for a PC’s
9-pin D-type connector.
4
3
1
9
6
7
8
2
5
Figure 7. D-9 to BNC Connections
1. Connect the center conductor of the coax to the pin 2
(RX)
on your serial port
connector.
2. Connect the shield of the coax to the ground pin
5
(GND)
on your serial port
connector.
25-Pin Connections
The following diagram illustrates a sample connection using a
typical
pin-out configuration for a PC’s
25-pin D-type connector.
5
4
3
2
1
14
15
16
17
6
7
8
18
19
20
10
9
11
12
13
22
21
23
24
25
Figure 8. D-25 to BNC Connections
1. Connect the center conductor of the coax to the pin 3
(RX)
on your serial port
connector.
2. Connect the shield of the coax to the ground pin
7
(GND)
on your serial port
connector.
6-2
•
Comlink
ADC-8032A User Manual (Iss. 04)