Brand:

• AMX

Models:

• Anything that has an AxLink port

Question:  

How do you calculate AxLink Wiring Distances?

Answer:

All AxLink devices require a minimum of 12 VDC power to operate properly.   The power can be supplied by the Central Controller's AxLink cable (remote power configuration) or with an optional 12 VDC power supply (local power configuration).

Most power supplies are factory set to 13.5 VDC. Never use a power supply that exceeds 18 VDC for remote or local power configurations. Contact AMX for a complete list of products and their power consumption ratings.

The maximum wiring distance between the power supply and AxLink device is determined by power consumption, supplied voltage, and the wire gauge used for the cable. Use the 3-step formula below to calculate the maximum wiring lengths allowable between the Central Controller and external AxLink devices

Total Current consumption of all devices on AxLink Cable “x", Wire Resistance pet foot “x2" = Voltage drop per foot.
Power Supply Voltage “-“12Vdc = Surplus voltage dissipation for cable run.
Surplus voltage dissipation for cable run “/" Voltage drop per foot “=" Maximum Distance in feet.
Gauge/Resistance Factors

Most power supplies are factory set to 13.5 VDC. Never use a power supply that exceeds 18 VDC for remote or local power configurations.

AxLink Wiring Distance Formula for Data and Power

Wire gauge                                                       Wire Resistance Per Foot

Solid Copper Wiring                             Stranded Copper Wiring

18 AWG                                              .00639                                                  .00692

20 AWG                                              .0101                                                    .01090

22 AWG                                              .0162                                                    .01690

24 AWG (UTP)                                   .0257                                        ​