WaveNet WN900RFID-A Dual Channel RF/ ID Reader User Manual RFID mod

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Document ID	284220
Application ID	Npo3tio+IHcXeJDBOr/Bwg==
Document Description	User Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	6.27kB (78376 bits)
Date Submitted	2002-11-19 00:00:00
Date Available	2003-01-08 00:00:00
Creation Date	2002-11-19 14:20:21
Producing Software	Acrobat Distiller 5.0 (Windows)
Document Lastmod	2002-11-19 14:20:21
Document Title	Microsoft Word - User_Manual_RFID_mod.doc
Document Creator	PScript5.dll Version 5.2
Document Author:	danhuynh

MODEL WN900RFID-A
DUAL CHANNEL RF/ID READER
USER MANUAL
© 1997 WaveNet International Inc. All rights reserved.
WaveNet International Inc. reserves the right to amend the contents of this guide at any
time to reflect product development and product improvements.
Regulations and Approvals
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC rules.
These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. The equipment generates,
uses, and can radiate radio frequency energy, and if not installed and used in accordance
with the proper instructions, may cause harmful interference to radio communications.
Operation of this equipment in a residential area will cause harmful interference, in which
case the user will be required to correct the interference at the user’s own expense. All
external cables must be shielded to ensure compliance with the Class A FCC limits.
In situations where the user elects to install WaveNet specified equipment including high
gain antenna kits, the user will be responsible for adhering to all pertinent FCC, fire and
safety/building code regulations pertaining to the installation.
WARNING: Changes or modifications to the equipment, not expressly approved by
WaveNet International Inc. could void the user’s authority to operate the equipment and
void the warranty.
For more information on regulatory approvals, contact your local WaveNet
representative.
RF EXPOSURE WARNING
In order to ensure user safety and to satisfy RF exposure requirements for mobile
transmitting devices, a minimum separation distance of 50 cm. (20 inches) must be
maintained between the transmitting device and the user (or other nearby persons) during
device operation. Operation at smaller separation distances is not recommended.
ANTENNA GAIN
The maximum gain of an antenna connected to the Model WN900RFID-A must not
exceed 9.5dbi
Technical Description
The Dual Channel RF/ID Reader is designed to read AAR (Association of American
Railroads) transponder tags operating in the frequency range 902 - 904mhz and 909.75 –
921.75 mhz. The maximum R.F. power output measured at the transmitter is 1 Watt.
The RF module is composed of an RF oscillator, RF amplifier, a homodyne receiver and
a video amplifier. The RF module is responsible for transmitting and receiving radio
energy. This energy is transmitted through the antenna and the RF energy reflected by the
tag is also received by the same antenna.
The RF module transmits a single frequency of RF energy and receives that same
frequency after it is reflected by the tag. The homodyne receiver is used to separate the
transmitted continuous wave energy from the information reflected by the tag. The
reflected energy from the tag is encoded into 20 and 40 Khz signals which modulate the
RF energy reflected by the tag.
Installation
The Model WN900RFID-A is a completely self-contained AEI (Automatic Equipment
Identification) tag reader. The module should be installed in a sealed enclosure and
connected to a directional antenna having a gain of no greater than 9.5 dbi using low loss
50 ohm cable.
The module requires a power source of 12 to 16 volts at 1 amp. (max). and communicates
with an external controller on a RS-232 serial channel. Power and serial input/output
signals are available on connector J11:
Pin no.
10
Signal
+12v
+12v
+12v
n/c
Transmit data
Gnd
Receive data
Gnd
Gnd
Gnd
The power/communication cable must be shielded and a ferrite block (part no. Steward
S28A2025-0A0) should be installed close to J11 for FCC/IC compliance.
If Wheel sensors and Track switch sensors are to be connected, use only WaveNet
supplied shielded and filtered cables.

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Create Date                     : 2002:11:19 14:20:21-05:00
Modify Date                     : 2002:11:19 14:20:21-05:00
Page Count                      : 3
Creation Date                   : 2002:11:19 19:20:21Z
Mod Date                        : 2002:11:19 19:20:21Z
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Author                          : danhuynh
Metadata Date                   : 2002:11:19 19:20:21Z
Creator                         : danhuynh
Title                           : Microsoft Word - User_Manual_RFID_mod.doc

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