Siemens 5WK4 9046 Manual de usuario

Annex No.5

Technical Description

Key 5WK4 9046

Siemens VDO Automotive AG SV C BC P2 RF TG

IC: 267T-5WK49046 FCC ID:KR55WK49046

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User Manual

of the

Siemens VDO

Remote Control Transmitter

Type:

Designkey

Siemens VDO Automotive AG SV C BC P2 RF TG

IC: 267T-5WK49046 FCC ID:KR55WK49046

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General description of the Designkey "Keyless Go"

The Designkey incorporates two main functional features.

1. RF remote control system : activation by button press

2. Keyless go system : activation by an external LF-signal source.

In both activation modes the Designkey answers with the available RF (radio

frequency) interface. For remote control function additionally IR (infra red)

communication is in use.

In regular application the RF receiver is located within the control unit which is

mounted in the car interior. The Designkey RF transmitter antenna is

mechanically integrated in the key head. The RF transmitter is used to

transmit different information by a unidirectional transmission line to the RF

receiver within the control unit.

In regular application the following functions are provided by the Designkey :

-Lock the car

-Unlock the car

-Unlock the trunk of the car

-Driverauthentication ( Keyless Go )

-Panic activation ( USA only )

Power supply

The transmitter is provided with 2 Lithium batteries (CR 2025) that both gives

a power supply of +3V.

Buttons

There are three buttons which enable to lock and unlock the doors and to

unlock the trunk and an extra button in case of required panic function (USA

only).

During activation, by button press the microcontroller port is forced to ground

via a “pull-up” within the microcontroller.

Siemens VDO Automotive AG SV C BC P2 RF TG

IC: 267T-5WK49046 FCC ID:KR55WK49046

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Typical usage pattern (for Europe only)

96 lock/unlock operations in 24 hours with typical transmission duration of 0.8

seconds

→4 lock/unlock operations with one hour

Transmitter ON 3.2 seconds / hour

Transmitter OFF 3,596.8 seconds / hour

Duty Cycle: TON / T (ON+OFF) x 100% = 3.2 / 3,600 x 100 % = 0.08 %

Siemens VDO Automotive AG SV C BC P2 RF TG

IC: 267T-5WK49046 FCC ID:KR55WK49046

I:\POSTZULA\MB_DC\DesignKey\Original_Doku\Func_Designkey.doc Page 4of 7

Block diagrams of the transmitter

µC for

RF Tx and

IR RxTx

data transmission

µC for button

and

LF communication

Button's

Keyless Go -

Control Unit

IR- Transmitter

IR -Receiver

RF transmitter

LED

Power management

Manchester

coded

Battery A

Battery B

standard

µC interface

9,84375 MHz Crystal for 315,0 MHz

13,5687 MHz Crystal for 433.92 MHz

Crystal

Siemens VDO Automotive AG SV C BC P2 RF TG

IC: 267T-5WK49046 FCC ID:KR55WK49046

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Variants

Model Description

5WK4 9045 433.92 MHz variant for Europe

5WK4 9046 315.00 MHz variant for USA

Technical Data

Carrier frequency model 5WK4 9045: 433.92 MHz ±0.05%

Carrier frequency model 5WK4 9046: 315.00 MHz ±0.05%

Output power model 5KW49045 : < 10 mW

Field strength model 5WK49046 : < 6000µV/m @ 3m

Type of modulation: FSK

Method of frequency generation: PLL

Number of channels: 1

Power supply: battery (2x CR 2025)

Type of battery: lithium

Transmission range: <10 m

NOTE:

Changes or modifications not expressly approved by the manufacturer could

void the users authority to operate the equipment.

Siemens VDO Automotive AG SV C BC P2 RF TG

IC: 267T-5WK49046 FCC ID:KR55WK49046

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Label design

Europe: (433.92 MHz) USA/CAN: (315 MHz)

Siemens VDO

5WK4 9045

Siemens VDO

5WK4 9046

IC: 267T-5WK4 9046

FCC ID: KR55WK49046

This device complies with part 15 of

the FCC Rules and RSS-210.

Operation is subject to the following

two conditions: (1) This device may

not cause harmful interference, and

(2) this device must accept

interference received, including

interference that may cause

undesired operation.

Siemens VDO Automotive AG SV C BC P2 RF TG

IC: 267T-5WK49046 FCC ID:KR55WK49046

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Homologation functionality

For homologation use the Designkey samples are programmed with a special

software which allows to set the RF transmission in following modes :

1 ) Constant carrier high frequency

2 ) Constant carrier low frequency

3 ) 1 kBit Modulation

4 ) 10 kBit Modulation

The following diagram shows how to activate the different homologation modes.

OFF

Constant

LOW

FREQ.

(LED Blink

200ms)

Constant

HIGH

FREQ.

(LED Blink

200ms)

Modulated

1kbit/s

(LED Blink

20ms)

Modulated

kbit/s

(LED Blink

50ms)

trunk button

any button

open button close or panic or trunk

button

close button

trunk or open or panic

button

any button

panic button

open button

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