Keri Systems MS-3000 - Manual (Page 8)

MS-3000 MicroStar Reader
2305 Bering Drive 01815-001 Rev. H
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-3000
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 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.
4. The controller is
mounted too close to a
device that radiates
electromagnetic
interference.
• Devices such as computer monitors radiate
electromagnetic interference that affects the
performance of the receiver board on the
controller. When possible, relocate either the
controller or the device to provide a greater
distance between the two.
5. The reader is powered
by a switching power
supply.
• Switching power supplies are EMI sources.
Change to a linear, regulated power supply.