Brand:

• AMX

Models:

• Anything that has an AxLink port

Question:  

Will AxLink work over UTP network cable?

Answer:

You can use standard UTP (Category 5/5e/6) network cabling for AxLink data communications, as outlined below:

When using UTP cable for AxLink data communication, do not split the AxLink data lines (AXP/AXM wires) across pairs.

When using UTP cable for AxLink data communication, the maximum overall distance between the Central Controller and all external devices is 1,000 feet (304.8 m).  

If the installation site's UTP wiring conforms to EIA/TIA 568 standards, AxLink data communication will function properly.  UTP Cable Requirements AxLink has no special UTP cable requirements; standard off-the-shelf UTP network cable will work. High performance cabling is not required for AxLink data transmission.  

UTP cable contains four unshielded twisted pairs of 24 AWG solid wire.  

The nominal capacitance between conductors is 15.0 pF/ft.

AxLink Over UTP With Local Power Supply

The recommended method of using UTP cable for AxLink data communications is to use local power supplies to provide power to the AxLink bus devices. When a local power supply is used, the free GND wire of the GND pair should be connected. This is the recommended method and is compatible with existing network installations.  UTP wiring diagram - without PWR connection (recommended method) Green and brown pairs are shown here as an example.  Orange or blue pairs may be used instead, if desired. AxLink Over UTP Network Cable 8 AxLink Wiring Considerations AxLink Over UTP With Power Supplied Via AxLink While it is recommended that local power supply be used for AxLink bus devices, it is possible to use UTP cable to provide 12 VDC power to connected devices.

This method should only be used in limited cases:  

Relatively short cable runs - distance limitations of running 12 VDC power over UTP cable is a function of resistance based on the power requirements of the AxLink bus devices, as well as the wiring used in the UTP cable (typically 24 AWG).  As an example, a 1000 mA device on UTP cable (using 24 AWG wires) with a power connection (as in FIG. 7) would be limited to approximately 29 feet (8.83 m). You can also use the "AMX Power Calculator" utility to calculate the cable distance that you can achieve using this wiring method. "AMX Power Calculator" is available to download from www.amx.com and is included with the VisualArchitect software application.  

In situations where you will not be interfacing with existing punch-blocks or patch bays.  

Commonly used UTP terminations can severely limit power handling capability. Check the specifications of the device you are connecting. When in doubt, supply power with a local power supply instead of via UTP. UTP Cable Recommendations Some basic recommendations for installing UTP cable are provided below. Note that these are generally network cabling-related concepts, not necessarily specific to AxLink data transmission over UTP.  

Avoid installing UTP cabling in close proximity to electrical conduit or other high-voltage electrical sources. Allow at least 18" (45.72 cm) of separation between electrical and data lines. Always check local codes and other applicable regulations.  

Avoid installing UTP cabling in any area that is likely to see sustained temperatures lower than -4°F (-20°C), or higher than 150°F (65°C).  

Install cable with gradual bends at corners. Kinks or sharp bends can create line interference.  

Only use staples or fasteners that conform to the cable's shape. When using staples or fasteners, be careful not to crimp the wires inside.​