Kantech ioProx P600, Руководство по установке, Страница: 22 / 26

Installation Manual P600 ioProx Long Range Proximity Reader
22 DN5084-0804
If the read range is reduced:
• Move the reader away from the metal objects to reduce energy loss.
• Try to limit the amount of metallic materials near the P600.
• Use a plastic electrical box and/or PVC electrical post and/or PVC gooseneck if possible.
Avoid installing conduit and other metal hardware within four inches (10 cm) of the back of
the reader or closer than ten inches (25 cm) from large metal surfaces.
• Put a non-metallic spacer between the reader and the metal object.
5.3 Radio Frequency Interference
Motors and electronic devices generate RF noise that may interfere with the reception of the
signal from a transponder. The result of RF noise is typically a reduction of read range. The P600
is susceptible to RF interference, as are all devices that receive RF signals. The read range is
affected by the amount interference (noise) in the area. Common sources of RF interference are:
• Power supplies,
• Electrical and electronic equipment,
• Some types of lightning,
• Computers and monitors,
• Motors and generators,
• HVAC compressors.
If the read range is reduced:
• Move the reader to a location known to be free of interference
• Test read range from the new location to isolate RF interference.
• Do not mount the P600 within 15 feet (5 m) of any monitors (VDTs or CRTs).
5.4 Transponder Type
The type of transponder used affects the read range of the P600. The various styles of KANTECH
cards and transponders use different types of antennas. The antenna type will determine the read
range for that type of transponder. The following table shows the difference in the read range
depending on the card read.
Card Type Read Range (Inches) Read Range (Cm)
P10SHL clamshell cards 24-29 inches 61-73 cm
P20DYE/P30DMG 19-21 inches 48-53 cm
P40KEY 13-17 inches 33-43 cm
Table 1: Read Range vs. Card Type