Transponder Reader
TWN4 MultiTech 3 LF
Quick Start Guide / Integration Manual
Rev. 3.0
Elatec GmbH
Page 2 of 12
1. Introduction
The transponder reader TWN4 MultiTech 3 LF is a device for reading and
writing RFID transponders. There TWN4 MultiTech 3 LF has a working
frequency of 125 kHz.
2. Getting Started
2.1 Cable Connection
In order to start operating a TWN4 MultiTech 3 LF transponder reader, it
simply has to be connected to a host.
2.2 Power Up
Once a TWN4 reader is connected to the host, it detects the type of
communications cable (USB or RS232), with which it is connected to the
host.
Additionally, the RS232 is sending a version string via RS232 to the host.
2.3 Enumeration (USB Only)
This is only applicable for the USB version: Once the device has been
powered up, it is waiting for completion of the enumeration by the USB
host. As long as the device is not enumerated, it is entering a minimum
power consumption mode, where both LEDs are turned off.
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2.4 Initialization
After powering up and enumeration (in USB mode), the device is turning on
the built-in transponder reader logic. The green LED is turned on
permanently. Some transponder reader modules need some kind of
initialization, which is performed in this step. After successful initialization,
the device sounds a short sequence, which consists of a lower tone
followed by a higher tone.
2.5 Normal Operation
As soon as the device has completed the initialization, it is entering normal
operation. During normal operation the device is searching for a
transponder continuously.
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2.6 Detection of a Transponder
If a transponder is detected by the reader, following actions are performed
Send the ID to the host. By default, the USB device sends by
emulating keystrokes of a keyboard. A RS232 device sends the
ASCII code of an ID.
Sound a beep
Turn off the green LED
Blink the red LED for two seconds
Turn on the green LED
Within the two seconds timeout, where the red LED is blinking, the
transponder, which just has been recognized will not be accepted again.
This prevents the reader from sending identical IDs more than one time to
the host.
If during the two seconds timeout of the red LED a different transponder is
detected, the complete sequence restarts immediately.
2.7 Suspend Mode (USB Only)
The USB version of the transponder reader supports the USB suspend
mode. If the USB host is signaling suspend via the USB bus, the
transponder reader is turning off most of its power consuming peripherals.
During this operation mode, no detection of transponders is possible and all
LEDs are turned off.
Once the host is resuming to normal operation mode, this is also signaled
via the USB bus. Therefore, the transponder reader will resume to normal
operation, too.
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3. List of Antennas
- Inductance: 490μH ± 5%
- Diameter of wire: 0,15mm
- 67± 2 windings
- Coil is fixed by using backed wire
- Leadfree and RoHS conform
Parameters
Operating Frequency: 125kHz
Type: Magnetic Loop
Impedance: Directly connected and matched to transmitter
Polarization: Linear
Construction: Wounded air coil antenna
TWN4 MultiTech 3 LF
Antenna 125kHz
Elatec GmbH
Page 6 of 12
Compliance statements
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Caution!
The Federal Communications Commission (FCC) warns the users that
changes or modifications to the unit not expressly approved by the party
responsible for compliance could void the user's authority
to operate the equipment.
FCC §15.105 (b):
Note: This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reason-able protection against harmful
interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be deter-mined by
turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
--Reorient or relocate the receiving antenna.
--Increase the separation between the equipment and receiver.
--Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
--Consult the dealer or an experienced radio/TV technician for help.
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RSS COMPLIANCE STATEMENT
This device complies with Industry Canada’s licence-exempt RSSs.
Operation is subject to the following two conditions:
(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that
may cause undesired operation of the device
Le présent appareil est conforme aux CNR d’Industrie Canada applicables
aux appareils radio
exempts de licence. L’exploitation est autorisée aux deux conditions
suivantes:
1) l’appareil ne doit pas produire de brouillage;
2) l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi,
même si le brouillage
est susceptible d’en compromettre le fonctionnement.
End device labeling instructions
FCC notes for all hosts devices. The end device must be labeled with:
Contains FCC ID: WP5TWN4F8
Contains IC: 7948A-TWN4F8
Supplier’s Declaration of Conformity
Labeling requirements according to 47 CFR Part 15.19
This device complies with Part 15 of the FCC rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Elatec GmbH
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Identification according to 47 CFR Part 2.1074
Devices subject only to Supplier's Declaration of Conformity shall be
uniquely identified by the party responsible for marketing or importing the
equipment within the United States. However, the identification shall not be
of a format which could be confused with the FCC Identifier required on
certified equipment. The responsible party shall maintain adequate
identification records to facilitate positive identification for each device.
Devices subject to authorization under Supplier's Declaration of Conformity
may be labeled with the following logo on a voluntary basis as a visual
indication that the product complies with the applicable FCC requirements.
The use of the logo on the device does not alleviate the requirement to
provide the compliance information required by §2.1077.
Compliance information according to 47 CFR Part 2.1077
(1) Identification of the product, e.g., name and model number
(2) A compliance statement as applicable, e.g., for devices subject to part
15 of this chapter as specified in §15.19(a)(3) of this chapter, that the
product complies with the rules; and
(3) The identification, by name, address and telephone number or Internet
contact information, of the responsible party, as defined in §2.909. The
responsible party for Supplier's Declaration of Conformity must be located
within the United States.
(b) If a product is assembled from modular components (e.g., enclosures,
power supplies and CPU boards) that, by themselves, are authorized under
a Supplier's Declaration of Conformity and/or a grant of certification, and
the assembled product is also subject to authorization under Supplier's
Declaration of Conformity but, in accordance with the applicable
regulations, does not require additional testing, the product shall be
supplied, at the time of marketing or importation, with a compliance
information statement containing the following information:
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(1) Identification of the assembled product, e.g., name and model number.
(2) Identification of the modular components used in the assembly. A
modular component authorized under Supplier's Declaration of Conformity
shall be identified as specified in paragraph (a)(1) of this section. A modular
component authorized under a grant of certification shall be identified by
name and model number (if applicable) along with the FCC Identifier
number.
(3) A statement that the product complies with part 15 of this chapter.
(4) The identification, by name, address and telephone number or Internet
contact information, of the responsible party who assembled the product
from modular components, as defined in §2.909. The responsible party for
Supplier's Declaration of Conformity must be located within the United
States.
(5) Copies of the compliance information statements for each modular
component used in the system that is authorized under Supplier's
Declaration of Conformity.
(c) The compliance information statement shall be included in the user's
manual or as a separate sheet. In cases where the manual is provided only
in a form other than paper, such as on a computer disk or over the Internet,
the information required by this section may be included in the manual in
that alternative form, provided the user can reasonably be expected to
have the capability to access information in that form. The information may
be provided
electronically as permitted in §2.935.
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NOTE: The Commission does not have a required SDoC format. This is an
example only and is provided to illustrate the type of information that may
be supplied with the product at the time of marketing or importation for
meeting the FCC SDoC requirement.
Modification of equipment
The instruction manual of the host shall include the following statement:
Changes or modifications made to this equipment not expressly approved
by the party responsible for compliance may void the FCC authorization to
operate this equipment.
Special accessories
Where special accessories such as shielded cables and/or special
connectors are required to comply with the emission limits, the instruction
manual shall include appropriate instructions on the first page of the text
describing the installation of the device.
Elatec GmbH
Page 11 of 12
Final Compliance of end product
The integrator is responsible for the final compliance of the end product
including this certified transmitter module. CFR 47 §15.101 give guidance
in terms of applicable equipment authorization procedures of different endproducts. Typically compliance to subpart 15 B (§15.107 and 15.109) Class
A or B including verification of the subpart 15 C compliance (field strength
of fundamental and out-of-band emissions) of the transmitter parameters
apply.
Simultaneous transmission
When the host product supports simultaneous-transmission operations the
host manufacturer needs to check if there are additional RF exposure filing
requirements due to the simultaneous transmissions. When additional
application filing for RF exposure compliance demonstration is not required
(e. g. if the TWN4 MultiTech 3 LF module in combination with all
simultaneously operating transmitters complies with the RF exposure
simultaneous transmission SAR test exclusion requirements), the host
manufacturer may do his own evaluation without any filing, using
reasonable engineering judgment and testing for confirming compliance
with out-of-band, restricted band, and spurious emission requirements in
the simultaneous-transmission operating modes.
If additional filing is required please contact the person at Elatec GmbH
responsible for certification of the TWN4 MultiTech 3 LF module.
Elatec GmbH
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4. Service Address
In case of any technical questions, please contact:
Elatec GmbH
Zeppelinstr. 1
82178 Puchheim
Germany
Phone: +49 (0) 89 5529961 0
Fax: +49 (0) 89 5529961 129
Email: info-rfid@elatec.com
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