Configuration; Active Pair Setup - Black Box Express 8-Port Mux User Manual

EXPRESS 8-PORT MUX
1. Do not look into any fiber optic connection or fiber optic cable.
2. Do not connect the Express 8-Port Mux to any type of public network.
3. Do not connect any outdoor cabling to the Express 8-Port Mux without proper
lightning protection.
4. Do not use unauthorized power supplies or cables.
5. Do not connect to non-5250-protocol devices.
6. Do not disassemble or modify the power supply and its cables.
7. Disconnect all cables prior to configuration.
8. Devices attached to the UTP network must comply with the voltage and current
limits for Class 2 Power-Limited Signal Circuits as defined by article 725 of the
National Electrical Code and Section 16 of the Canadian Electrical Code.
9. For your safety, power outlets must be properly wired and grounded.
10. Never attempt to service equipment connected to the data cable network or the
grounded receptacle during an electrical storm. Exposure to lethal voltages may
occur when lightning is present.

3.1 Active Pair Setup

Each Express 8-Port Mux is factory configured per customer request. The factory setting is circled on the
identification label located on the rear panel. (Refer to Figure 2-2 to locate the identification label.)
The active pair may be re-configured by performing the following procedure:
· Disconnect all power to the unit.
· Remove the two top-cover screws on the rear panel.
· Gently slide the top cover back one inch.
· Hold the top cover and tilt it up.
Reconfigure the jumpers located behind the RJ-45 connectors as required. Settings for active pair assignment
are shown below:
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3. Configuration

READ THIS FIRST!
Figure 3-1. Active Pair Jumper Settings.