Feig Electronic ID ISC.ANT600-DA Montage- und Bedienungsanleitung

APPLICATION-NOTE

final

public (B)

2005-08-29

N50101-0e-ID-B.doc

OBI

i-scan

ID ISC.ANT800/600-DA

Configuring and Tuning an

Antenna Gate from four or six

ID ISC.ANT800/600-DA Antennas

OBID i-scan®Application-Note ID ISC.ANT800/600-DA

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Note

FEIG ELECTRONIC GmbH

Lange Strasse 4

D-35781 Weilburg-Waldhausen

Tel.: +49 6471 3109-0

http://www.feig.de

With the edition of this document, all previous editions become void. Indications made in this manual may be

changed without previous notice.

Copying of this document, and giving it to others and the use or communication of the contents thereof are

forbidden without express authority. Offenders are liable to the payment of damages. All rights are reserved

in the event of the grant of a patent or the registration of a utility model or design.

Composition of the information in this document has been done to the best of our knowledge.

FEIG ELECTRONIC GmbH does not guarantee the correctness and completeness of the details given in this

manual and may not be held liable for damages ensuing from incorrect or incomplete information. Since,

despite all our efforts, errors may not be completely avoided, we are always grateful for your useful tips.

The instructions given in this manual are based on advantageous boundary conditions.

FEIG ELECTRONIC GmbH does not give any guarantee promise for perfect function in cross environments.

FEIG ELECTRONIC GmbH assumes no responsibility for the use of any information contained in this

document and makes no representation that they free of patent infringement. FEIG ELECTRONIC GmbH

does not convey any license under its patent rights nor the rights of others.

OBID®and OBID i-scan®are registered trademarks of FEIG ELECTRONIC GmbH.

Microsoft® and Windows® are registered trademarks of Microsoft Corporation.

OBID i-scan®Application-Note ID ISC.ANT800/600-DA

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Contents

1. Properties and intended Application of the Antenna Gate 4

1.1. Project Notes.......................................................................................................................5

1.2. Required Components........................................................................................................7

1.3. Preparing the Installation Location / Metal-free Areas ....................................................8

2. Installation and Wiring 9

2.1. Configuration of the Antenna Gate....................................................................................9

2.2. Notes on Installing and Routing the Antenna Cable......................................................10

3. Tuning the Gate 11

3.1. Setting the Power Splitter.................................................................................................11

3.2. Setting the Multiplexer......................................................................................................14

3.2.1. Configuration of the DIP-Switch...................................................................................14

3.2.2. Jumper Configuration ..................................................................................................15

3.3. Setting the Antennas ........................................................................................................15

3.4. Reader Configuration........................................................................................................16

3.5. Tuning the Antennas.........................................................................................................18

3.6. Checking the Standing Wave Ratio SWR (optional) ......................................................19

4. Starting up and Testing the Gate 20

4.1. Checking the Noise Level.................................................................................................20

4.2. Reading out a Serial Number...........................................................................................22

4.3. Testing the Performance..................................................................................................23

4.3.1. Testing parallel Label Orientation................................................................................23

4.3.2. Testing right angels Label Orientation.........................................................................24

4.4. Setting Buffered Read Mode ............................................................................................25

ANNEX 26

Recommended Equipment and possible Sources.................................................................26

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1. Properties and intended Application of the Antenna Gate

The antenna gate described here was designed for reading Smart Labels (transponders) on goods

transported on pallets or conveyor systems. The read window depends on the number of the used

antennas, the required label orientation, the label type used and the size of the label.

The gate consists of antennas of type ID ISC.ANT800/600-DA, an antenna multiplexer

ID ISC.ANT.MUX-A, a power splitter ID ISC.ANT.PS-B and a Reader ID ISC.LR200-B.

Detailed information about the products and installation notes on the individual antennas can be

found in the installation guide ID ISC.DAT, ID ISC.ANT.MUX-A, ID ISC.ANT.PS-B and

ID ISC.ANT800/600-DA or can be acquired in an antenna training course offered by FEIG

ELECTRONIC GmbH.

The installation guides can be found on the OBID i-scan®CD available from

FEIG ELECTRONIC GmbH.

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1.1. Project Notes

The antenna configuration described permits detection of labels which are moving in a horizontal

direction through the gate. The gate distance GD depends on the selected label orientation. This

can be parallel to the antennas (c), at right angles to the antennas (d) or a combination of both

orientations, whereby the gate distance GD is the narrowest in the a combination of both orienta-

tions.

The gate height (GH) depends on the antenna overlapping AO, that must not be smaller than

15cm. Different gate heights by different antenna overlappings are shown above:

Table1: Gate Height by different Antenna Overlappings

Antenna Overlapping AO Gate Height GH

4 Antennas 6 Antennas

15cm 1,45m 2,10m

30cm 1,30m 1,80m

Figure 1 shows the capture area as well as the various label orientations.

Figure 1: Capture Area and Label Orientation

4 Antennas 6 Antennas

Note: The gate height (GH) is smaller than the mechanical height of the gate.

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The following gate distances for the various label orientations are derived from the capture area

shown above:

Table 2: Gate Distances

Label Orientation Gate Distance

parallel to antenna cmax. 1.55 m

at right angles to antenna dmax. 1.10 m

parallel and at right angles to

antenna max. 1.00 m

In order to ensure that the label is captured in the capture area illustrated above, the following

conditions must be met:

•The minimum distance from the lower antennas to the floor must be 25 cm.

•The labels should have at least an ISO card size (46 mm x 75 mm).

•The activation field strength of the labels should be less than or equal to 85 mA/m.

•The distance from label to label should be more than 10 cm.

The distance from label to label can be reduced if the gate distance GD is correspondingly

diminished. This applies especially for distances of less than 5 cm.

•Not more than 16 labels should be located within the capture area of the antenna at one time.

The number of labels can be increased by reducing the gate distance correspondingly and

adjusting the maximum speed accordingly.

•The maximum traverse speed of the labels should not exceed 0.5 – 1 m/s (This depends on

the number of labels, the number of data blocks, the necessary data protocol and the label

type).

•The antenna should have a minimum separation from metal parts of 50 cm.

•No noise inducing electrical devices should be located close enough to the Reader to cause

interference. The difference in the noise levels should be equal to or less than 20 mV.

Note: The entire capture area is larger than the area shown in Figure 1.This means there

are label orientations for which the label can be detected outside the drawn capture

area, so that labels can even be outside the gate. Suitable shielding measures need

to be taken to prevent this.

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1.2. Required Components

The following are required to construct the gate:

-Qty. 1 ID ISC.LR200-B

-Qty. 1 ID ISC.ANT.MUX-A

-Qty. 1 ID ISC.ANT.PS-B

-Qty. 4/6 ID ISC.ANT800/600-DA

-Qty. 2 ID ISC.ANT.CS

-Qty. 1 ID ISC.ANT.SC

-Qty. 3/5 EMC ring core

Supplier: Würth Elektronik GmbH & Co. KG, Best.-Nr. 742 701 4

-Qty. 2 Koaxialcable 18cm with SMA-connectors

The cables on the ID ISC.ANT800/600-DA antennas are approx. 3.5 m long each. The connection

between the power splitter ID ISC.ANT.PS-B and reader ID ISC.LR200-B is made by the 2.9m

cable from the ID ISC.ANT.CS cable set. The power splitter ID ISC.ANT.PS-B and the multiplexer

ID ISC.ANT.MUX-A are connected by the 18 cm cables ID ISC.ANT.SC. This means the reader

needs to be installed near the antennas.

For greater distances between reader and antennas, the ID ISC.ANT.EC extension can be used to

increase the length of the antenna cable and/or the cable between reader and power splitter by

7.20m. This will however result in a slight reduction in performance.

For cable extension the following is required:

-ID ISC.ANT.EC

For startup you will need the service software

ISOStart Version 6.06 or higher and

DATuningTool

on a PC running under Windows. The service software can be found on the OBIDi-scan®CD

available from FEIG ELECTRONIC GmbH. Also recommended for checking purposes is an SWR

meter with SMA jacks. For more detailed information, see ANNEX.

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1.3. Preparing the Installation Location / Metal-free Areas

To ensure flawless operation of the gate all larger metal parts must be removed from the vicinity of

the antennas.

Figure 2: Metal-free zone

side view top view

A minimum distance of 25cm to the floor should in any case be maintained. If the presence of

metal near the antennas cannot be avoided, note the following:

•Minimum distance from antenna to metal 10 cm. Closer than 30 cm will result in strong

reduction of the reader range. Above 50 cm from metal there is virtually no effect.

•The effect of metal parts depends greatly on their size and shape. Thin metal bars affect the

magnetic lines of field less than large surface areas.

•Larger metal surfaces (edge length >50 mm) parallel to the antennas or labels will result in

short circuiting of the magnetic lines of field. This will prevent the label from being read.

•Metal parts beneath a conveyor belt change the orientation of the magnetic lines of field. This

will result in strong reduction of the read range. Horizontally oriented labels will in such cases

be unreadable.

•The metal parts may not form closed loops or circuits. These likewise need to be electrically

separated (opened) at some point.

•The metal parts in the direct vicinity of the antenna must be star grounded using a good HF

connection.

•Since the Reader is contained in a metal housing and the antennas couple to the Reader

through the cable, the Reader should be located at a distance of at least 50 cm from the

antennas.

•The Reader housing may not have an electrical connection to any metal parts in the vicinity of

the antenna.

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2. Installation and Wiring

2.1. Configuration of the Antenna Gate

The individual components are configured as shown in Figure 3.

Figure 3: Configuration of the antenna gate

The antennas must be connected to the multiplexer as shown in Figure 3. The lower antennas

must be connected to outputs OUT1 and OUT8 respectively, the middle antennas must be con-

nected to outputs OUT2 and OUT7 respectively, etc.

If a SWR meter is used it has to be placed between the reader an the power-splitter (s. Figure 4).

The SWR meter is only used for checking the tuning results and is removed when testing is

finished.

Figure 4: Mounting of the SWR meter

6 x Antenna

ID ISC.ANT800/600-D

Reader

ID ISC.LR200-B

Power Splitter

ID ISC.ANT.PS-B

3,5m

(+7,2m)

18cm

12-24VDC

MUX

IN OUT

Multiplexer

ID ISC.ANT.MUX-A

LR200

70cm

LR200

SWR meter

18cm

70cm

2.9m

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2.2. Notes on Installing and Routing the Antenna Cable

To suppress possible noise, an EMC ring core having a diameter of 28 mm should be installed in

all antenna and Power Splitter cables (supplier: see ANNEX). The coax cable should be wrapped

tightly through the EMC ring core at least four times. The distance between the Reader connection

and the ring core should be max. 10 cm.

Figure 5: Installing the EMC ring core on the connection cable

Up to a distance of 50 cm the antenna cable should always be routed vertically up from the

antennas. A minimum distance of 50 cm from the antennas should also be observed for the

additional cable routing.

If the antenna cable has to be routed closer to the antenna, a distance of at least 20 cm should still

be observed. Otherwise a performance degradation can be expected.

All antenna cables must have a distance of at least 30 cm from parallel routed, current carrying

cables.

Excess cable should be fastened in a ring ∅= 10 – 15 cm.

If the existing cable is not long enough, the ID ISC.ANT.EC extension can be used to lengthen the

antenna cable by an additional 7.20 m. This will result in a slight loss of sensitivity.

In order to achieve optimum read distances the antenna connection cable should not be shortened

or lengthened.

Note: Please note the instructions in the installation guide ID ISC.ANT600/800-DA.

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