User's Manual

• Keep all the Reader wiring at least 12 inches (30 cm) away from all other wiring, which

include but not limited to, AC power, computer data wiring, telephone wiring and wiring to

electrical locking devices.

• Do not operate the reader within 36 inches (91 cm) of a computer CRT terminal.

4.2 General Good Reader Installation Practice

• Avoid mounting reader on large metallic surface, such as metal door or chain-link fence,

or other similar environments,

• Make sure that the supply voltage of the Reader is within specification. As a rule of

thumb, higher supply voltage results in longer read range (not to exceed 12V) but at the

expense of higher power consumption.

• Use cables with over-all shield (Screen).

• For best result, run the cable in an individual conduit with at least 12 inches distance

away from the AC power, computer data cables and cables for electrical locking devices.

• Use recommended cable. Do not use any un-shielded "Twisted Pair" type cable.

• Use the largest wire gauge possible.

• Use dedicated and linearly regulated power supply, where applicable.

• Use Single Point Grounding (Earthing). No ground loops.

4.3 Metal Mounting

The Reader can be pre-calibrated for mounting on metal; for best result, avoid metallic object

altogether. The Reader should not be framed within or surrounded by metal of any kinds. If the

Reader is installed in an enclosure, such as a parking station, contact AWID for sources of

appropriate fiberglass enclosures. Stands off the Reader at least 2.0 inches (5 cm) on all sides

of a metallic enclosure and do not cover up the front face.

4.4 General Wiring Requirements

All the Reader wiring must be continuously shielded. AWID recommends using #22 AWG up to

#18 AWG, six or seven-conductor shielded cables. Longer distances and higher current

consumption on the power supply line will require larger gauge wires. Refer to Table 4.4-1 and

Figure 5.2-1 and Figure 5.2-2 on the following pages to determine your data lines’ wiring

requirement. Due to system data termination differences, contact your panel manufacturer for

their specific requirements.

TABLE 4.4-1: Data Line’s Wiring Requirement

WIRE SIZE #22 AWG (0.6mm Dia) #18 AWG (1.2mm Dia)

WEIGAND 270 ft (85 meters) 980 ft (300 meters)

RS-232 45 ft (15 meters) 45 ft (15 meters)

AWID PROPRIETARY