LF Installation & setup

J.A.G 7 March, 2008 Texas Instruments Proprietary Information 1

RFID

LF TrainingInstallation and Set-up

5/22/2008 TI Proprietary Information 2

Radio FrequencyModule (RFM)

ControlModule (CTL) Series 2000 Reader

● S2000 Readers

LF Installation and Set-up


Remote Antenna RF Module (RI-RFM-008B)

Remote Tuning Module (RI-ACC-008B)

Power RF Module(RI-RFM-007B)

Control Module(RI-CTL-MB2B)

● S2000 ReadersLF Installation and Set-up


─ We are now shipping a new control module which can be recognized by the 2nd red LED and the USB connector.

– RI-CTL-MB2B-30 ….. RS-232– RI-CTL-MB6B-30 ….. RS-422/485

● S2000 Control Module─ The CTL Module is available with RS-232 or RS-422/485

communications.♦ RI-CTL-MB2A ….. RS-232♦ RI-CTL-MB6A ….. RS-422/485



● S2000 Control Module (MB2A/MB6A)



Open CollectorOutputs

Input/OutputPorts 4 .. 7

Input/OutputPorts 0 .. 3

RXSS/ Tuning

LED Outputs

Input/RESET

Synchronization

PowerInput

USB Port

Serial Comms

● S2000 Control Module (MB2B/MB6B)



Series S2500 Reader(RI-STU-251B)

● S251B DAT Reader



DC Power General Purpose I/O Sync Carrier Phase

Open CollectorI/Os

RS232 Interfaces RS422/ RS385

Antenna

1 2 3 4 5 67 8 9 10 11 121 2 3 4 5 6 13 1415 1 2 3 4 5 6

1 2 3 4 5 6 1 2 3 4 5 61 2 3 4 5 6

1 2

O.C. - I/O RS232 RS422/ 485

Power + - Fuse General Purpose Input/ Output Synchronisation

Power Range Setting

ON

ON

1 2 3 4 5 6 7 8 9101112

ON

1 2 3 4 5

ON

1 2 3 4 5

LO.K.

L

AntennaTuning

EMI

TX Active

Read O.K.

RF Power Output Adj.EMI/ Sync. Level Adj.

Reader S251BRS422RS485DAT

1 2 3

1 2

Antenna

● S251B DAT Reader



● Power Supply Requirements ( all readers)

– Must be a regulated linear supply (Only switch mode power supplies that have an operating frequency > 200 kHz can be used)

– Must have a current rating high enough to supply the peak demandthat occurs during the 50 ms transmit period. (150 mA for the MicroReader, 1.5 A for the RFM-104B and 2A for the RFM-007B/8B)

– The power supply must be located close to the reader (avoid longDC supply lines).

– Route power and control lines separately.

– Power and antenna cables must be routed separately.



JP6

SW1ST2

27

6 5

4

3

2 1

REGULATEDSUPPLY

RFM-007B: 7 ~ 24 VDCRFM-008B: 7 ~ 24 VDC

VSPGNDP

VDCGND

VCC2VCC3

POWERING USING A SINGLE SUPPLY

ST2

2

+-

VCC3

GND

BATTERY BACK-UP FOR MEMORYJP6

SW1ST2

27

6 5

4

3 2

1

(IF REQUIRED)

ST2

2

● Powering the S2000



7 8 9 10 11 121 2 3 4 5 6 13 14 15

1 2 3 4 5 6

1 2

O.C. - I/O

Power + - Fuse General Purpose Input/ Output

Power Range Setting

ON

Reader S251B

1 2 3

REGULATED LINEAR SUPPLY

10 ~ 24 VDC

RANGE BRIDGE

● Powering the S2500

– Must be a regulated linear supply (Only switch mode power supplies that have an operating frequency > 200 kHz can be used)

– Set the range bridge to suit your supply• 10 ~ 15 V (-20 to 70 ºC) …. Pins 1 & 2• 15 ~ 24 V (-20 to 70 ºC*) ... Pins 1 & 2• 18 ~ 24 V (-20 to 70 ºC) …. Pins 2 & 3* If the peak current >0.9A, the limit is 40ºC (100ºF)

– The RF Output potentiometer can be used to reduce or increase the power (The potentiometer is set to the mid-point during production).

NoteSmall high Q antennas (e.g. RI-ANT-S02C, RI-ANT-G02E) may exceed the limits at 24V and integrators should reduce the input voltage accordingly.



● Battery Backup for the S2500

E2 Pro

m

V_BAT

GND

+

3V

– If you wish to support the contents of the reader’s memory during power down, a standard 3.7V battery can be used.

– Inside the reader box, on the main board, next to the EEProm are 4 holes.

– Solder in a 4-pin connector and attached the battery + to pin 1 (Square pad), Ground goes to pin 4



● Serial Communications

Noise spike not seen as signal

Tx+ Tx-

Rx+ Rx-

– RS422 (Differential signals)• 4 wires, 2 × Tx, 2 × Rx• Distances > 1Km• Good noise resistance

Tx/Rx+Tx/Rx-

Noise spike not seen as signal

– RS485• 2 wires. Distances > 1Km • The line is ‘turned around’ for Tx and Rx• Good noise resistance

– RS232• Most common - available on most PCs• Limited distance (5 m)• Affected by noise

TxRxGND

Noise spike seen as signal



● RS-232 Communications

Three wire alternative

235 46

5 4

3 2

1

RXDDTR

GND

TXDDSR

9 WAY "D" Connector

JP6

S1

JP5

235 46

ST2

15

4 3

2 1

• RS-232 is point-to-point only. It is not very noise immune and intended for short distances (5m)




RX+RX-GNDTX+TX-

RS422 Hostor Network

5 4

3 2

1

120

JP2 JP4 JP5

RS422 Interface Termination(Only 1 reader will have JP2 in)

JP6

S1

ST2

15

4 3

2 1 JP2

─ RS-422 is also Multi-drop – Master + 8 nodes. It is very noise immune and intended for long distances >1.2 kilometres




RX+RX-

GND

TX+/TX-/

5 4

3 2

1

120

JP2 JP4 JP5

RS484Network

RS485 Interface Termination(Only 1 reader will have JP2 in)

JP6

S1

JP5ST2

15

4 3

2 1

JP4

JP2

─ RS-485 is multi-drop (Master + 31 nodes). It is very noise immune andintended for long distances > 1 km. It only uses 2 wires that have to be ‘turned around’ between Tx and Rx. This can cause problems with some RS-232 to RS-485 converters



B & B electronicsModel 485SD9R




JP6

S1

JP11USB

Pin 1 …… 5 VdcPin 2 …… Data –Pin 3 …… Data +Pin 4 …… not connectedPin 5 …… GND

Jumper 11 must be in for USB communicationsUSB drivers are available at:http://focus.ti.com/docs/prod/folders/print/tusb3410.html

● USB Communications



RFID

● USB Connection– The USB interface is only enabled when jumper 11 is in position

and requires a USB A to mini-USB B cable

Jumper 11USB selected

Pin 1 …… 5 VdcPin 2 …… Data –Pin 3 …… Data +Pin 4 …… not connectedPin 5 …… GND



RFID

● USB Driver Installation– Before the USB interface can be used the drivers must be installed.– Go to: http://focus.ti.com/docs/toolsw/folders/print/tusbwinvcp.html and download:



RFID

● USB Driver Installation – 4 step process1. Download and execute “TUSBWINVCP_WDF-Single_Driver_v1-2.exe”

from swrc09.zip to create a folder for the software at:C:\Program Files \Texas Instruments\TUSB3410 Single Driver installer\DISK 1


3. Connect the USB to the PC. Windows™ will recognize the “TUSB3410 Device”.

• Use “Install the software Automatically” option

2. Move to DISK 1 and execute “setup.exe” to pre-install the drivers.

4. Windows™ will recognize the“USB- Serial Port”• Use “Install the software

Automatically” Option


1 2 3 4 5 6 1 2 3 4 5 6

O.C. - I/O RS232

ON

1 2 3 4 5 6 7 8 9101112

EMI

TX Active

Read O.K.Reader S251B

2 3 4 51

6

STANDARDRS232

2 3 4 56

GN

D

DTR

RXD

TXD

DSR

2 3 4 51

6

2 3 4 51

6

2 3 4 56

3 WIRERS232

● S251B Communications



Note: Comms Port pin-outs are the same for both S2000 & S2510 readers

RXD

-

TXD

-

TXD

+

AMPLICON RS422/RS232CONVERTOR

RXD -RXD +

TXD -TXD +

GND

222NF

DCE

1 2 3 4 5 6 1 2 3 4 5 61 2 3 4 5 6

O.C. - I/O RS232 RS422/ 485

ON

1 2 3 4 5 6 7 8 9101112

ON

1 2 3 4 5

LO.K.

L

AntennaTuning

EMI

TX Active

Read O.K.Reader S251BRS422RS485DAT

1 2

Antenna

RXD

+




1 2 3 4 5 61 2 3 4 5 6

RS232 RS422/ 485

ON

1 2 3 4 5

LO.K.

L

AntennaTuning

EMI

TX Active

Read O.K.

RS422RS485DAT

1 2

Antenna

1 2 3 4 5 61 2 3 4 5 6

RS232 RS422/ 485

ON

1 2 3 4 5

LO.K.

L

AntennaTuning

EMI

TX Active

Read O.K.

RS422RS485DAT

1 2

Antenna

RX-BRX-A

GND

5

4

1

9

8TX-BTX-A

Amplicon PC 48AT Card




1 2 3 4 5 61 2 3 4 5 6

RS232 RS422/ 485

ON

1 2 3 4 5

LO.K.

L

AntennaTuning

EMI

TX Active

Read O.K.

RS422RS485DAT

1 2

Antenna

1 2 3 4 5 61 2 3 4 5 6

RS232 RS422/ 485

ON

1 2 3 4 5

LO.K.

L

AntennaTuning

EMI

TX Active

Read O.K.

RS422RS485DAT

1 2

Antenna

GND

5

4

1

9

8TX/ RX -TX/RX +

Amplicon PC 48AT Card




G04E

S01C

G01EG02E

● Standard Antennas



The G01E and G02E antennas come with 1m (39”) cables. These can be extended using low resistance cable (e.g. 2.5 mm Oxygen Free Hi-Fi cable) by a further 2m without significant reduction in performance and they should still be capable of being tuned to resonance.

The leads of these cables are made from Litze wire to achieve maximum performance. This wire comprises 120 individually insulated (lacquered) wires and should the connector break off, the lacquer should be removed by heating before sweating on a new terminal. (crimping on a terminal will result in low performance because of the high impedance)

The G04E antenna has a slightly lower Inductance (26 µH) to allow you to fit a 4m long lead (of low resistance wire) and still be within tuning range.

We do not advise extending the antenna cable more than necessary, as reduced performance will result from the increased resistance, the extra inductance could prevent successful tuning and the antenna will be more susceptible to noise

● Standard Antennas



● Effect of Antenna Size/ Noise on Reading Range



● Magnetic Field Pattern



Stick Antenna Gate Antenna

● Magnetic Field Patterns



– This can be done by changing the Inductance (ferrite cored inductor)or

– Changing the Capacitance (capacitance jumpers )Note: Changing the antenna cable length or metal near the antenna will also change the tuning

– The Antenna and its cable are all part of a INDUCTANCE/ CAPACITANCE circuit that has to be tuned to resonance to get best performance. The formula for this circuit is:

ƒ(res) = 12π√ LC

CAPACITANCEINDUCTANCE

● Antenna Tuning



Jumpers all in / L↓ Jumpers all out / L↑

Inductance too Low Inductance too highAntenna close to metal? Extension added to antenna tail?Increase size of loop Reduce size of loopMake antenna narrower Make antenna more squareAdd capacitance in Parallel Add capacitance in Series

● Antenna Tuning



– The Antenna Tuning Indicator can be used both with Capacitive or Inductive tuning

– It indicates the direction to turn the ferrite core or whether to add or remove capacitance jumpers

– Will also adjust the noise level threshold used by the Wireless synchronisation circuit

– Switch off other readers when doing both these operations

● Antenna Tuning



Inductance (µH) Capacitance (µF) Inductance (µH) Capacitance (µF)

54.0 0.061 25.5 0.00351.0 0.060 25.0 0.00448.0 0.067 24.5 0.00545.0 0.076 24.0 0.00743.0 0.089 23.5 0.00841.0 0.100 23.0 0.00940.0 0.110 22.5 0.01039.0 0.120 22.0 0.01238.0 0.130 21.5 0.01337.0 0.140 21.0 0.01536.0 0.160 20.5 0.01735.0 0.180 20.0 0.01834.0 0.200 19.5 0.02033.5 0.220 19.0 0.02233.0 0.230 18.5 0.02432.5 0.260 18.0 0.02632.0 0.280 17.5 0.02831.5 0.310 17.0 0.03131.0 0.350 16.5 0.03330.5 0.400 16.0 0.03630.0 0.470 15.5 0.03829.5 0.560 15.0 0.04229.0 0.700 14.5 0.045

● Extending the Reader’s Tuning Range



● Extended Antenna Inductance Tuning– High voltage (1000+) polypropylene capacitors required– The maximum voltage for these capacitors falls off at RF frequencies

1000 10,000 100,000 1,000,000

20

4060

100

200

300500700

Hz

V.eff (~)

2000 VDC/ 500 VAC

1500 pF

4700 pF

0.022 µF

134.2 kHz



Inductance too Low Inductance too High

● Extending the Reader’ Tuning Range

LF Antenna Design

Documents

LF Installation & setup