User's Manual

K02008-001 REV. A
2
2.2 Power Supply Cable Types and Maximum Lengths
The EM Reader requires a minimum voltage of 8.0 VDC. Voltage drops caused by the cable resistance,
can be made up by increasing the power supply voltage (DO NOT SET THE POWER SUPPLY
VOLTAGE TO HIGHER THAN 14 VDC). The following are the recommended cable types and maximum
cable lengths for cable connecting the power supply to the reader (DO NOT USE CABLES WITH
GAUGES SMALLER THAN 24 AWG):
Cable Type Maximum Cable Length
24 AWG (0.60mm), three conductors, with an
overall foil shield, Belden 9533 or equivalent.
200’ (61 m)
22 AWG (0.80mm), two conductors, with an overall
foil shield, Alpha 5192 or equivalent.
300’ (91 m)
18 AWG (1.20mm), two conductors, with an overall
foil shield, Alpha 5836 or equivalent.
500’ (152 m)
2.2.1 Reader to Host Interface Wire Types and Lengths
Refer to the table below to determine the recommended wiring type at various maximum distances.
Variation in distance requires different wire gauges, Because of system data termination differences,
contact your system manufacturer for its exact requirements, Installation to 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)
18 AWG (1.20mm), six or eight conductor, with an
overall foil shield, Alpha 5386, 5388 or equivalent.
500’ (152m)
Readers
Power Supply
Cable Length
Readers
Power Supply
Cable Length