MS-7000: SuperStar Reader
2305 Bering Drive
01826-001 Rev. G
San Jose, CA 95131 USA
(800) 260-5265 (408) 435-8400 FAX (408) 577-1792
Web: www.kerisys.com E-mail: [email protected]
Page 8 of 8
Quick S
tart Guide
MS-7000
Problem
Probable Cause
Corrective Action
5. You are using an
incorrect type of card.
•
Make sure you are using an access card
that is compatible with the reader.
6. The reader is unable to
read the card.
•
Verify there is nothing that can interfere
between the reader and the access card.
The reader has a
short read range.
1. The reader's controller
is not properly
grounded.
•
Ensure there is a quality earth ground
connection made to the controller. Refer to
the controller's documentation for specific
information regarding the earth ground
connection.
2. The shield wire for the
reader's cable has
opened somewhere
between the reader and
the controller.
•
Verify the shield line from the controller to
the reader is one continuous, connected
line. Refer to the controller's installation
documentation and verify the shield line is
correctly connected to the controller.
3. The reader is mounted
too close to a metallic
object.
•
Remove the reader from its mounting
surface and ensure there is no metal on the
mounting surface within 1 inch of the
reader.
4. The reader is mounted
too close to a device that
radiates electromagnetic
interference.
•
Devices such as computer monitors radiate
electromagnetic interference that affects
read range. When possible, relocate either
the reader or the device to provide a greater
distance between the two.
5. The controller is
mounted too close to a
device that radiates
electromagnetic
interference.
•
Devices such as computer monitors radiate
electromagnetic interference that affects
read range. When possible, relocate either
the controller or the device to provide a
greater distance between the two.
6. The reader is powered
by a switching power
supply.
•
Switching power supplies are EMI sources.
Change to a linear, regulated power supply.
