Elatec MultiTech M TWN4 User manual

RFID Reader/ Writer
TWN4 MultiTech M
User Manual

Elatec GmbH
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1. Introduction
The transponder reader module TWN4 MultiTech M is a device for reading
and writing RFID transponders. There are different versions of TWN4
devices available, which cover a large range of transponder types both in
the frequency range of 125kHz and 13.56MHz.
2. Getting Started
2.1 Cable Connection
In order to start operating a TWN4 transponder reader, it simply has to be
connected to a host.
2.2 Enumeration
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.
2.3 Initialization
After powering up and enumeration, the device is turning on the built-in
transponder reader logic. The green LED is turned on permanently. Some
transponder readers need some kind of initialization, which is performed in

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this step. After successful initialization, the device sounds a short sequence,
which consists of a lower tone followed by a higher tone.
2.4 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.
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.
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.

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Suspend Mode
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
HF antenna
LF antenna

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4. Compliance statements
FCC
(RF module)
Compliance statement:
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.
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.
Information to the user:
(The instruction manual of the host shall include the following statement) A
compliance statement as applicable, e.g., for devices subject to part 15 of
CFR 47 as specified in §15.19(a)(3), that the product complies with the
rules; and 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.

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Host devices
FCC notes for a host subject to verification or SDoC:
For a host device assembled with the certified module and subject to 47
CFR Part 15 verification of class A digital devices, the following statements
have to be included in the user manual and the host device has to be
labelled as noted below. If the host device is subject to other authorization
procedures or parts the appropriate requirements of these authorization
procedures or parts apply.
Important note:
OEM integrator is still responsible for the FCC compliance requirements of
the end product, which integrates this module. Appropriate measurements
(e.g. 15B compliance) and if applicable additional equipment authorization
of the host device to be addressed by the integrator/ manufacturer
The end device must be labeled with:
Contains FCC ID: WP5TWN4F17
Contains IC: 7948A-TWN4F17
HVIN: EL20208

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Example for SDoC:
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.
For class B devices:
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 reasonable 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 determined 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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For class A devices:
FCC §15.105 (b):
NOTE: 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.
This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own
expense.
CANADA:
This device complies with Industry Canada’s license-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.
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.
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