User's Manual

K02021-000 Rev A April 2006
6
2.1.1 Power Supply Cable Types and Recommended Lengths
The ASR-620++ reader requires a minimum voltage of 12.0 VDC at the reader. 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 28 VDC! In noisy environments, use shorter
cable runs. The data in Table 1, shows the recommended cable types and cable lengths for cables
connecting the power supply to the reader DO NOT USE CABLES WITH GAUGES SMALLER
THAN 24 AWG.
Table 1. Power Supply to Reader Cable Types and Recommended Lengths
Cable Type Recommended Cable Length
12V
Recommended Cable Length
24V
24 AWG (0.60 mm), three conductor, with
an overall foil shield, Belden 9533 or
equivalent.
20 ft (6.1m) 30 ft (9.1m)
22 AWG (0.80 mm), two conductor, with
an overall foil shield, Alpha 5192 or equiv-
alent.
30 ft (9.1 m) 44 ft (13.7 m)
18 AWG (1.20 mm), two conductor, with
an overall foil shield, Alpha 5386 or equiv-
alent.
80 ft (24.4 m) 120 ft (36.6 m)