HID Global Corporation 6042AA Manuale Utente
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HID Corporation 9292 Jeronimo Road Irvine, CA 92618 USA TEL (949) 598-1600 (800) 237-7769 FAX (949) 598-1690
Web page –
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www.proxtrak.com
– ProxTrak Portal Reader Installation Procedure 6042-901-01 Rev 7
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9. General Interference Guidelines
The portal is susceptible to outside RF noise sources (radiators) that generate frequencies from 50KHz up
to 140KHz. The effect on the Portal performance is dependent on the received signal strength at the portal
receiver antennas. The received signal strength is dependent on the angle between the radiator and the
Portal receive antennas, the strength of the radiated signal and the distance between the two devices.
to 140KHz. The effect on the Portal performance is dependent on the received signal strength at the portal
receiver antennas. The received signal strength is dependent on the angle between the radiator and the
Portal receive antennas, the strength of the radiated signal and the distance between the two devices.
Some types of offending devices are computer monitors (CRT type), Laptop computers, Access Control
Devices etc.
Devices etc.
If a Portal performance is being effected by some external RF noise source the following steps should be
tried to isolate the source of the interfering signal and to minimize the interference.
Isolate the device that is producing the noise by turning electronic devices OFF one at a time until the
portal performance returns
Try turning the offending device and check for a return of performance.
If a computer monitor is the offending device, change the screen resolution settings.
Move the device farther from the portal.
tried to isolate the source of the interfering signal and to minimize the interference.
Isolate the device that is producing the noise by turning electronic devices OFF one at a time until the
portal performance returns
Try turning the offending device and check for a return of performance.
If a computer monitor is the offending device, change the screen resolution settings.
Move the device farther from the portal.
10. Location of other HID Proximity Readers
Figure 4-1 shows the relative positioning of a portal and other proximity readers for testing that is
presented in this section. Figure 4-2 contains a chart gives the distance (in inches) between another HID
proximity reader and a portal at the point at which the performance of the portal is reduced to zero (first
number) and where the performance is just being effected (second number in the column). The
orientations presented are representative and selected to determine the interaction between portal and
other readers. The field generated out the back of a reader is as strong as the field out the front, thus the
test configurations shown are adequate. The type of reader used to take the measurements is also noted
in the spread sheet.
presented in this section. Figure 4-2 contains a chart gives the distance (in inches) between another HID
proximity reader and a portal at the point at which the performance of the portal is reduced to zero (first
number) and where the performance is just being effected (second number in the column). The
orientations presented are representative and selected to determine the interaction between portal and
other readers. The field generated out the back of a reader is as strong as the field out the front, thus the
test configurations shown are adequate. The type of reader used to take the measurements is also noted
in the spread sheet.
The recommended measurements are to determine the signal interaction between the portal and any
nearby HID proximity reader. Refer to the appropriate column in Figure 4-2 for the separation between the
portal and any particular reader.
nearby HID proximity reader. Refer to the appropriate column in Figure 4-2 for the separation between the
portal and any particular reader.
0 - degrees
90 degrees
Direction of travel
Location and
Orientation of
Proximity Reader
Column A
Column C
Column B
90 degrees
0 - degrees
0 - degrees
Column D
Column F
Column E
Column G
Column J
Column H
90 degrees
Figure 4-1. Test Set-Up Conditions for Portal and other Proximity Reader