Black Box ACU4222A - Manual (Page 18)

INSTALLATION
17
3.2 Interconnection Cable Requirements
To connect the Local and Remote units you will need CATx (any category 5, 5e, 6 or higher)
cable terminated with RJ45 plugs.
Interconnect cables must be solid-core type. Stranded patch cable will give poor results over
longer distances. The pairing of the cable and pinning of its connectors should normally be in
accordance with EIA-568B (see below).
One CATx cable is required for each video channel.
•
The Primary interconnect cable connects INTERCONNECT Port 1 on the Local and
Remote units. This carries the main video channel and USB data.
• The Secondary interconnect cable connects to INTERCONNECT Port 2 on the Local
and Remote units. This carries the additional video channel on dual-head units and/or
audio/serial data.
Technical Note: Although suitable for use with UTP cable, it is
recommended that shielded STP/FTP cable is used with this product if
possible, especially in electrically noisy environments. When shielded cable
is used, it is most important to ensure that shield connectivity is maintained
between the Extender units.
Cable Pinning/Pairing
The following table illustrates which RJ45 connector pins the extenders use for various
signals. It also details the standard EIA-568B wiring scheme that is recommended for most
installations.
Looking into the RJ45 socket on a Remote unit, Pin 1 is on the right and Pin 8 on the left.
Pin Color (EIA-568B) Signal
1
2
White/Orange
Orange/White
Blue Video
3
6
White/Green
Green/White
Green Video
4
5
Blue/White
White/Blue
Red Video
7
8
White/Brown
Brown/White
Data
EIA-568A wiring can also be used. Contact Technical Support for details.