Elatec TWN4 MultiTech 2 HF User Manual

Device for reading and writing

RFID transponders

TWN4 MultiTech 2 HF

Manual

Rev. 3

Elatec GmbH

Page 2 of 8

1. Introduction

The TWN4 MultiTech 2 HF is an integrated device for contactless
read/write operations on a transponder, i.e. a transponder card in the
frequency range of 13.56 MHz.

2. Getting Started

2.1 Cable Connection

In order to start operating a device for reading and writing
RFID & BT transponders, the TWN4 MultiTech 2 HF simply has to be
connected to a host.

2.2 Power Up

Once a TWN4 MultiTech 2 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.

Elatec GmbH

Page 3 of 8

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.

Notice:
For secure use a minimum distance of 2 cm to the reader is recommended.

注意!
依據低功率電波輻射性電機管理辦法
第十二條經型式認證合格之低功率射頻電機，非經許可，公司、商號或使用者均
不得擅自變更頻率、加大功率或變更原設計之特性及功能。
第十四條低功率射頻電機之使用不得影響飛航安全及干擾合法通信；經發現有干
擾現象時，應立即停用，並改善至無干擾時方得繼續使用。前項合法通信，指依
電信規定作業之無線電信。低功率射頻電機須忍受合法通信或工業、科學及醫療
用電波輻射性電機設備之干擾。

Elatec GmbH

Page 4 of 8

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.

Elatec GmbH

Page 5 of 8

3. List of Antennas

Elatec GmbH

Page 6 of 8

4. Compliance statements

FCC Compliance

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.

Elatec GmbH

Page 7 of 8

Canada Compliance

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.

RF exposure statement (mobile and fixed devices)

This device complies with the RF exposure requirements for mobile and
fixed devices. However, the device shall be used in such a manner that the
potential for human contact during normal operation is minimized.

Elatec GmbH

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5. Service Address

In case of any technical questions, please contact:
Elatec GmbH

Zeppelinstr. 1
82178 Puchheim
Germany

Phone: [phone]
Fax: [phone]
Email: [e-mail]