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> Cabling > AT-FAST/PCI-FAST |
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| AT-FAST/PCI-FAST Cabling
Specifications |
Under certain circumstances it may be necessary
to change the cabling when replacing an AT card with an AT-FAST
and PCI-FAST. Ideally good screened cables should be used to reduce
induced noise and also to reduce radio frequency emissions from
the cable. It is also good practice to connect unused signal inputs
to defined outputs. eg. If a three wire cable is used (Rx, Tx and
GND) with software flow control, then the cabling should be modified
to include the following loopback wire connections at the AT-FAST/PCI-FAST
connector. For all boards, connect RTS (output) to CTS (input).
For 8 and 16 port boards, connect DTR (output) to DSR and DCD (inputs).
Where distribution boxes are used, the loopback connections can
be made within the connector that plugs into the distribution box.
With RJ45 connectors, the connections are possibly more difficult
to implement on the RJ45 plug, but should be made as near to the
port connector as possible. Long wires connected to unused signals
are discouraged and should not be connected to loopbacked signals.
Unterminated signal wires are probably the most common source of
induced noise. Please select from the following, the product for
which you wish to view the revised cable specifications, for the
older type distribution boxes that are DCE
use the pin numbers shown in RED,
for distribution boxes and octopus cables that are DTE
use the pin numbers shown in BLUE. PLEASE
NOTE The AT/PCI-FAST 16 port cards do not currently
have full modem control, modems cannot be used on these types of
card. Please use the 4 or 8 port card if modems are required.
AT-FAST/PCI-FAST 4 Port Cable Specifications (25 Pin)
AT-FAST/PCI-FAST 4 Port Cable Specifications (9 Pin)
AT-FAST/PCI-FAST 8 Port Cable Specifications (25 Pin)
AT-FAST/PCI-FAST 8 Port Cable Specifications (9 Pin)
AT-FAST/PCI-FAST 16 Port Cable Specifications (25 Pin)
AT-FAST/PCI-FAST 16 Port Cable Specifications (9 Pin)
AT-FAST/PCI-FAST
4 Port Cable Specifications (25 Pin)
| AT / PCI-FAST
CONNECTOR |
ATTACHED DEVICE |
Modem.
| RJ
45 |
DB 25 |
| 1 |
8 |
| 2 |
4 |
| 3 |
6 |
| 4 |
2 |
| 5 |
3 |
| 6 |
7 |
| 7 |
5 |
| 8 |
20 |
Terminal (software
flow control)
| RJ 45 |
DB 25 |
| 1 - 3 - 8 |
- |
| 2 - 7 |
- |
| 4 |
3 |
| 5 |
2 |
| 6 |
7 |
| - |
4 - 5 |
| - |
6 - 8 - 20 |
Terminal (hardware
flow control)
| RJ 45 |
DB 25 |
| 1 - 3 |
20 |
| 2 |
5 |
| 4 |
3 |
| 5 |
2 |
| 6 |
7 |
| 7 |
4 |
| 8 |
6 - 8 |
Printer
| RJ 45 |
DB 25 |
| 1 - 3 - 8 |
- |
| 4 |
3 |
| 5 |
2 |
| 6 |
7 |
| 7 |
20 |
AT-FAST/PCI-FAST
4 Port Cable Specifications (9 Pin)Modem.
| RJ 45 |
DB 9 |
| 1 |
1 |
| 2 |
7 |
| 3 |
6 |
| 4 |
3 |
| 5 |
2 |
| 6 |
5 |
| 7 |
8 |
| 8 |
4 |
Terminal (software
flow control)
| RJ 45 |
DB 9 |
| 1 - 3 - 8 |
- |
| 2 - 7 |
- |
| 4 |
2 |
| 5 |
3 |
| 6 |
5 |
| - |
1 - 6 - 4 |
| - |
7 - 8 |
Terminal (hardware flow control)
| RJ 45 |
DB 9 |
| 1 - 3 |
4 |
| 2 |
8 |
| 4 |
2 |
| 5 |
3 |
| 6 |
5 |
| 7 |
7 |
| 8 |
1 - 6 |
AT-FAST/PCI-FAST
8 Port Cable Specifications (25 Pin)Modem.
| DTE |
DCE |
DB 25 |
| 1 |
1 |
1 |
| 2
|
3 |
2 |
| 3 |
2 |
3 |
| 4 |
6 |
4 |
| 5 |
20 |
5 |
| 6 |
4 |
6 |
| 7 |
7 |
7 |
| 8 |
8 |
8 |
| 20 |
5 |
20 |
Terminal (hardware
flow control)
| DTE |
DCE |
DB 25 |
| 1 |
1 |
1 |
| 2 |
3 |
3 |
| 3 |
2 |
2 |
| 4 |
6 |
5 |
| 5 |
20 |
4 |
| 6 - 8 |
4
- 8 |
20 |
| 7 |
7 |
7 |
| 20 |
5 |
6 - 8 |
Terminal (software
flow control)
| DTE |
DCE |
DB 25 |
| 1 |
1 |
1 |
| 2 |
3 |
3 |
| 3 |
2 |
2 |
| 4 - 5 |
6
- 20 |
- |
| - |
- |
4 - 5 |
| 6 - 8 - 20
|
4
- 5 - 8 |
- |
| 7 |
7 |
7 |
| - |
- |
6 - 8 - 20 |
Printer
| DTE |
DCE |
DB 25 |
| 1 |
1 |
1 |
| 2 |
3 |
3 |
| 3 |
3 |
2 |
| 5 |
20 |
20 |
| 6 - 8 - 20 |
4
- 5 - 8 |
- |
| 7 |
7 |
7 |
AT-FAST/PCI-FAST
8 Port Cable Specifications (9 Pin).Modem.
| DTE |
DCE |
DB 9 |
| 2 |
3 |
3 |
| 3 |
2 |
2 |
| 4 |
6 |
7 |
| 5 |
20 |
8 |
| 6 |
4 |
6 |
| 7 |
7 |
5 |
| 8 |
8 |
1 |
| 20 |
5 |
4 |
Terminal (harware
flow control)
| DTE |
DCE |
DB 9 |
| 2 |
3 |
2 |
| 3 |
2 |
3 |
| 4 |
6 |
8 |
| 5 |
20 |
7 |
| 6 - 8 |
4
- 8 |
4 |
| 7 |
7 |
5 |
| 20 |
5 |
1 - 6 |
Terminal (software
flow control)
| DTE |
DCE |
DB 9 |
| 2 |
3 |
2 |
| 3 |
2 |
3 |
| 4 - 5 |
6
- 20 |
- |
| 6 - 8 - 20
|
4
- 5 - 8 |
- |
| 7 |
7 |
5 |
| - |
- |
1 - 6 - 4 |
| - |
- |
7 - 8 |
AT-FAST/PCI-FAST
16 Port Cable Specifications (25 Pin)Printer
| DTE |
DCE |
DB 25 |
| 2 |
3 |
3 |
| 3 |
2 |
2 |
| 5 |
20 |
20 |
| 7 |
7 |
7 |
Terminal (software
flow control)
| DTE |
DCE |
DB 25 |
| 2 |
3 |
3 |
| 3 |
2 |
2 |
| 4 - 5 |
5
- 20 |
- |
| - |
- |
4 - 5 |
| 7 |
7 |
7 |
| - |
- |
6 - 8 - 20 |
Terminal (hardware flow control)
| DTE |
DCE |
DB 25 |
| 2 |
3 |
3 |
| 3 |
2 |
2 |
| 4 |
5 |
5 |
| 5 |
20 |
4 |
| - |
- |
6 - 8 - 20 |
| 7 |
7 |
7 |
AT-FAST/PCI-FAST
16 Port Cable Specifications (9 Pin)Terminal (software flow control)
| DTE |
DCE |
DB 9 |
| 2 |
3 |
2 |
| 3 |
3 |
3 |
| 4 - 5 |
5
- 20 |
- |
| - |
- |
1 - 6 - 4 |
| 7 |
7 |
5 |
| - |
- |
7 - 8 |
Terminal (hardware
flow control)
| DTE |
DCE |
DB 9 |
| 2 |
3 |
2 |
| 3 |
2 |
3 |
| 4 |
5 |
8 |
| 5 |
20 |
7 |
| 7 |
7 |
5 |
| - |
- |
1 - 6 - 4 |
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