User's Manual

K02021-000 Rev A April 2006
7
2.1.2 Reader to Host Interface Wire Types and Lengths
Refer to Table 2 to determine the recommended wiring type at various maximum reader to host
distances. Variation in distance requires different wire gauges. Because of system data termination
differences, contact your system manufacturer for exact requirements. Installation should be in
accordance with National Electric Code ANSI/NFPA 70.
Cable Type Maximum Cable Length
22 AWG (0.80mm), six or eight conductor, with an
overall foil shield, Alpha 5196, 5198 or equivalent.
500’(152 m)
Note: To insure an active low level that is less than 0.6 V, the total ground resistance
from the reader to the controller must be less than 0.5 ohms. Use larger guage wire if
necessary.
Table 2. Reader to Host Interface Wire Types and Lengths
Reader
Host Controller Panel
Cable Length