User Guide

AXlink Wiring Considerations
2
AXlink Wiring Considerations
AXlink Electrical and Timing Characteristics
FIG. 2 shows the electrical and timing characteristics of AXlink. The table below describes each
characteristic.
Cable Types and Maximum Distances
Compatible AXlink cable types include those manufactured by Liberty Wire & Cable Inc., and
cables that comply with Category 5 or Belden 8102 standards. To determine the maximum
distances, refer toPower Distribution section on page 3.
Pre-manufactured AXlink cable
The Liberty Wire & Cable Inc. manufactures AXlink cable that contains two pairs of conductors.
The data pairs comprise 22 AWG stranded shielded twisted pair (STP) with a single drain wire, and
a 12 VDC power pair of 18 AWG stranded wire. The nominal capacitance between the data
conductors is 12.5 pF/ft.
Using the Liberty Wire & Cable Inc. AXlink cable, the maximum overall cable distance between
the Central Controller and all external devices for data communication is 3,000 feet with no remote
power.
FIG. 2 AXlink electrical and timing characteristics
Electrical timing characteristics
Parameter Description Min. Typical Max. Units
Trise Rise time for AXM and AXP 0 20.0 µS
Tfall Fall time for AXM and AXP 0 20.0 µS
Vhigh AXM and AXP voltage with respect to AXlink ground 4.6 5.1 V
Vlow AXM and AXP voltage with respect to AXlink ground -0.7 0.4 V
Vdiff Voltage difference between AXM and AXP 1.0 4.2 5.0 V
Capacitance Total capacitance of AXlink bus wiring 37,500 pF
You can contact Liberty Wire & Cable Inc. at 4630 Forge Road, Suite A, Colorado Springs, CO
80907 or by calling [phone].