www.ams.com Revision 1.1 / 09/03/13 page 1/18
AS3930
Low Frequency Wake-up Receiver
Application Note: AS3930-AN01 – Demo Kit Manual
AS3930-AN01
Demo Kit Manual
www.ams.com Revision 1.1 / 09/03/13 page 2/18
Table of Contents
1
General Description ............................................................................................................. 4
1.1
Kit Content ........................................................................................................................... 4
2
Getting Started ..................................................................................................................... 4
3
Hardware .............................................................................................................................. 5
3.1
AS3930 Demoboard Description ......................................................................................... 5
3.2
125 kHz Wakeup Transmitter Board .................................................................................... 6
4
Software ............................................................................................................................... 7
4.1
Install the GUI ...................................................................................................................... 7
4.2
Description of the GUI of the Receiver ................................................................................ 8
4.2.1
Settings Descriptions ........................................................................................................... 8
4.2.1.1
Low Power Mode ................................................................................................................. 8
4.2.1.2
Clock Generator ................................................................................................................... 9
4.2.1.3
Calibrate RC Oscillator ........................................................................................................ 9
4.2.1.4
Antenna Damper .................................................................................................................. 9
4.2.1.5
Gain Reduction .................................................................................................................... 9
4.2.1.6
Automatic Time-Out ............................................................................................................. 9
4.2.1.7
Envelope Detector Time Constant ....................................................................................... 9
4.2.1.8
Data Slicer ............................................................................................................................ 9
4.2.1.9
Comparator Hysteresis ........................................................................................................ 9
4.2.1.10
Frequency Detection Tolerance ......................................................................................... 10
4.2.1.11
Wakeup Pattern (Manchester) ........................................................................................... 10
4.2.1.12
General Settings ................................................................................................................ 10
4.2.1.13
Correlator ........................................................................................................................... 10
4.2.1.14
Symbol Rate ....................................................................................................................... 10
4.2.1.15
Artificial Wakeup ................................................................................................................ 10
4.2.1.16
Clear Wake ........................................................................................................................ 10
4.2.1.17
Reset RSSI ........................................................................................................................ 10
4.3
Clear False Wakeup........................................................................................................... 10
4.4
Description of the GUI for the Wake-up Transmitter Board ............................................... 11
4.4.1
Settings Description ........................................................................................................... 11
4.4.1.1
Duration of Carrier Burst .................................................................................................... 11
4.4.1.2
Number of Preamble Symbols ........................................................................................... 11
4.4.1.3
Symbol Rate ....................................................................................................................... 12
AS3930-AN01
Demo Kit Manual
www.ams.com Revision 1.1 / 09/03/13 page 3/18
4.4.1.4
Enable Buzzer .................................................................................................................... 12
4.4.1.5
Wake-up Pattern (Manchester) .......................................................................................... 12
4.4.1.6
Manchester Pattern Length ................................................................................................ 12
4.4.1.7
Correlator ........................................................................................................................... 12
5
Schematics, BOM and Layouts of Demo Kit ...................................................................... 13
5.1
AS3930 Demoboard Schematic ......................................................................................... 13
5.2
AS3930 Demoboard Layout – Top and Bottom Layer ....................................................... 14
5.3
AS3930 Demoboard BOM ................................................................................................. 15
5.4
125 kHz Wake-up Transmitter Board Schematics ............................................................. 16
5.5
125 kHz Wake-up Transmitter Board Layout ................................................................... 16
5.6
125 kHz Wake-up Transmitter Board BOM ....................................................................... 17
6
Ordering Information .......................................................................................................... 17
Revision History
Revision Date Owner Description
1.0 18.04.2011 JPE Initial Release
1.1 11.03.2013 JRY Update to Corporate Format
AS3930-AN01
Demo Kit Manual
www.ams.com Revision 1.1 / 09/03/13 page 4/18
1 General Description
The AS3930 Demo Board demonstrates the main features of the AS3930. These include 1D wake-up pattern
detection, readout of false wake-ups, possibility to measure current consumption in different operating modes,
and measurement access to SPI communication and data output. Additional features are accessible via USB
through the GUI that was developed for easy access to the register map. Features such as the programmable
wake-up pattern, adjustable sensitivity level, low power listening modes and several more can be programmed
via the GUI. The influence different settings have on the detection efficiency can be observed right away by
using the 125 kHz Wake-up Transmitter Board.
1.1 Kit Content
The AS3930 Demo Kit contains the following items:
• 1x AS3930 Demo Board
• 1x 125kHz Wake-up Transmitter Board
• 1x 9V power supply
• 2x CR2032 Coin Cell
• 1x USB stick
• 1x USB Cable
2 Getting Started
− Connect the +9V DC Power Supply at “F” on the 125 kHz Wake-up Transmitter Board.
− Start to transmit Wake-up Patterns via AUTO “C” or PATTERN “B”.
− Insert the +3V Battery at “H” of the AS3930 Demo Board.
− Turn on the AS3930 Demo Board via the ON/OFF – switch “C”. When turning on the boards all
indication-LEDs flash up once.
− As soon as the AS3930 Demo Board receives a Wake-up Pattern, the RSSI LEDs flash up for
0.5s and show the actual Received Signal Strength.
AS3930-AN01
Demo Kit Manual
www.ams.com Revision 1.1 / 09/03/13 page 5/18
3 Hardware
3.1 AS3930 Demoboard Description
Figure 1: AS3930 Demoboard Description Top and Bottom
Figure 2: User Interface Description
Label Name Description Info
A BUTTON 1x short press reads the
false wake-ups The number of false wake-ups
can be read out and are displayed
via the RSSI – LEDs.
2x short press (double
click) clears the false wake-
ups
Pressing FALSE WAKEUP two
times resets the number of false
wake-ups. Each RSSI – LED is
turned on shortly.
C ON/OFF ON/OFF – Switch Power on/off the demoboard.
Source (Battery or USB) is
automatically detected.
G USB –
Connector Mini USB 5-pin connector USB Interface for the GUI
H CR2032 BATTERY Battery Holder Insert CR2032 here.
Figure 3: Jumper Description
Jumper Name Description Info
F IDD Supply Current The supply current of the AS3930 can
be measured. Set this jumper for normal
operation.
A
C
D
E
F
H
G
AS3930-AN01
Demo Kit Manual
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Jumper Name Description Info
D AS3930 specific outputs
D1 WAKE Wake Output Interrupt
D2 DAT Data Output
D3 CL_DAT Manchester Recovered Clock
E Microcontroller - Interface The SDI –Interface from the
microcontroller can be replaced by a
proprietary solution
E1 CS Serial Digital Interface Chip Select
E2 SCL Serial Digital Interface Clock
E3 SDI Serial Digital Interface Input
E4 SDO Serial Digital Interface Output
E5 GND Ground (0V)
Note: To establish a connection between the GUI and the AS3930 the board must be RESET by
switching the power OFF and ON via “C”. Alternatively, the buttons “A” and “B” can be pressed
simultaneously before connecting the USB cable.
3.2 125 kHz Wakeup Transmitter Board
Figure 4: Transceiver Board Description
Figure 5: User Interface Description
Label Name Description Info
A PATT+DATA Pattern+Data – Button Pressing this button the transmitter
sends continuously the wake-up
pattern plus data (01010101).
B PATT Single Pattern – Button Pressing this button the transmitter
sends a single wake-up pattern.
E
A
B
C
D
F
AS3930-AN01
Demo Kit Manual
www.ams.com Revision 1.1 / 09/03/13 page 7/18
Label Name Description Info
C AUTO Automatic Pattern –
Button Pressing this button the transmitter
automatically sends a wake-up pattern
every 1s
D STOP Stop Pattern – Button This button stops sending the
continuous wake-up pattern
E USB-Connector Mini USB 5-pin
Connector USB Interface for the GUI
F Power Supply +9V DC Power Supply
(2A) Insert power adapter here.
Figure 6: Indication LEDs/Buzzer
LEDs Blinking Color Info
G Buzzer Whenever a wake-up pattern is transmitted the buzzer
signals shortly. The buzzer can be disabled via the GUI.
STANDBY Red LED Transmitter is on standby. No wake-up pattern is sent.
Pattern Red LED Wake-up pattern is transmitted
Pattern+Data Red LED Wake-up pattern plus data is transmitted
Note: Before the 125 kHz Wake-up Transmitter is connected to the GUI via USB it is necessary to
stop transmitting Wake-up Patterns by pressing the button “D”.
4 Software
4.1 Install the GUI
− Execute the AS393x_EvalSW_v2.1.6b.msi which can be found on the USB stick in the folder
‘Software_Firmware’
− Follow the installation guide
− Run the GUI AS393x_EvalSW.exe
− Attach the respective board ( Demo Board or Transmitter Board ) with the USB cable
− From the pop up window ‘Choose Plugin’ choose the ‘AS3932_plugin.dll’
Figure 7: Plugin selection
Note: Before connecting the 125 kHz Wake-up Transmitter Board with the USB cable press “D” to
stop transmitting wake-up patterns.
AS3930-AN01
Demo Kit Manual
www.ams.com Revision 1.1 / 09/03/13 page 8/18
4.2 Description of the GUI of the Receiver
Adjustments can be saved with Store Settings in the lower right hand corner of the Receiver tab.
The default settings can be restored with Preset Default. All configurations that are set by the GUI
correspond to the Register Map of the AS3930 which can be viewed via View/Register Map
(Ctrl+M). The Register Map can be updated manually (File/Readout Registers (Ctrl+R)) or
automatically (File/Automatic Update (Ctrl+U)).
Figure 8: AS3930 GUI -- Receiver Tab
Note: Firmware updates can be done via Help/Firmware Update (Ctrl+F). Load the latest *.bin file to
update the firmware.
4.2.1 Settings Descriptions
4.2.1.1 Low Power Mode
The AS3930 features two low power modes which can be selected here. By default no power
saving mode is enabled. Thus, the receiver channel is active all the time. For the On\Off mode the
channel is activated only part of the time to minimize current consumption. For details please see
the AS3930 datasheet.
AS3930-AN01
Demo Kit Manual
www.ams.com Revision 1.1 / 09/03/13 page 9/18
4.2.1.2 Clock Generator
The clock source for the AS3930 can be selected here. The AS3930 demoboard has an on-board
crystal oscillator that is used by default. When the RC oscillator is selected as clock source, its
precision can be improved by calibrating the oscillator.
4.2.1.3 Calibrate RC Oscillator
The RC oscillator can be calibrated via the microcontroller or the LC antenna.
4.2.1.4 Antenna Damper
The antenna can be damped in order to limit the range. Therefore, a resistor inside the AS3930 is
switched parallel to the antenna. The value of the resistor can be chosen between 1kΩ to 27kΩ.
4.2.1.5 Gain Reduction
The Gain Reduction of the channel amplifier can be selected between 0dB up to -24dB.
4.2.1.6 Automatic Time-Out
The Automatic Time-Out resets the WAKE pin automatically after a designated time which can be
set between 0ms and 350ms.
4.2.1.7 Envelope Detector Time Constant
The performance of the demodulator can be optimized according to the bit rate and preamble
length. If the bit rate increases the time constant has to decrease. Adjust this ED time constant
according to your symbol rate. The recommended time constants for different symbol rates are
listed in the datasheet.
4.2.1.8 Data Slicer
The threshold of the data slicer can be set to a fixed level by setting the ‘hard threshold enable’ bit.
This hard threshold can be reduced by setting the ‘hard threshold reduction’ bit. Otherwise, the
threshold will be dynamically set according to the incoming data signal.
In case the dynamic threshold is used (i.e. the ‘hard threshold enable’ bit is not set), the data slicer’s
noise immunity can be adjusted via the data slicer’s time constant. The bigger this time constant is,
the better its noise immunity will be. However, increasing the time constant is only effective if also
the preamble length is increased. Otherwise, the threshold will not have enough time to settle to the
correct value. Therefore, the data slicer’s time constant is linked to the minimum preamble length.
The recommended minimum preamble lengths for different data slicer time constants are listed in
the datasheet.
4.2.1.9 Comparator Hysteresis
The comparator hysteresis of the data slicer can be set to either 20mV or 40mV. Furthermore, the
data slicer hysteresis can be selected for only positive edges or both positive and negative edges.
AS3930-AN01
Demo Kit Manual
www.ams.com Revision 1.1 / 09/03/13 page 10/18
4.2.1.10 Frequency Detection Tolerance
The Frequency Detection Tolerance can be tighter or more relaxed. For details please see the
datasheet.
4.2.1.11 Wakeup Pattern (Manchester)
Select a wakeup pattern here. Each field defines 4 bit. If the transmitted pattern matches the
selected pattern, a wakeup interrupt is generated at the WAKE pin. The WAKE pin goes high.
4.2.1.12 General Settings
− AGC only on carrier burst: The automatic gain control is active only on the first carrier burst.
− AGC UP-DOWN: The automatic gain control is operating in both directions (up and down). At
the beginning the gain of the channel amplifier is set to the maximum and the AGC reduces it
according to the received signal input level. If AGC UP-DOWN is disabled the AGC can only
decrease the gain for the whole duration of the data reception. In this mode the system holds
the RSSI peak.
4.2.1.13 Correlator
− Enable correlator: If the correlator is enabled the chip searches first for the preamble bits and
then for the data pattern (Manchester encoded Wakeup Pattern). Should the pattern correlation
be disabled, the AS3930 goes directly in data receiving mode.
− Single pattern: The wakeup pattern is sent as single string.
− Double pattern: The wakeup pattern is doubled.
4.2.1.14 Symbol Rate
The Symbol Rate can be adjusted between 512 Symbols/s and 4096 Symbols/s. The symbol rate
defines the duration of one bit via the 32.768 kHz Clock in order to recover the data.
4.2.1.15 Artificial Wakeup
It is possible to enable the artificial wakeup with a period between 1s and 2 hours.
4.2.1.16 Clear Wake
The Clear Wake Button resets the WAKE pin manually.
4.2.1.17 Reset RSSI
Reset the current RSSI measurement.
4.2.1.18 Clear False Wakeup
The False Wakeup register counts the number of frequency detections that do not match the
wakeup pattern. The accumulated number of false wakeups can be reset via the Clear False
Wakeup button.
AS3930-AN01
Demo Kit Manual
www.ams.com Revision 1.1 / 09/03/13 page 11/18
4.3 Description of the GUI for the Wake-up Transmitter Board
All adjustments that are made to the settings can be saved via “Store Settings” in the lower right
corner of the ‘Transmitter’ tab. The settings can be reset to the default configuration by pushing the
button “Restore Default Settings”.
Note: A possible Firmware Update can be done via Help/Firmware Update (Ctrl+F). Load the latest
*.bin file for the transmitter and update the firmware.
Figure 9: Graphical User Interface (GUI) for the 125 kHz Wake-up Transmitter Board
4.3.1 Settings Description
4.3.1.1 Duration of Carrier Burst
The duration of the carrier burst can be set in multiples of carrier cycles (0-500 x 8µs) or in
milliseconds (1-3).
4.3.1.2 Number of Preamble Symbols
The carrier burst must be followed by a separation bit and at least 3 symbols preamble. The number
of preamble symbols that are sent can be adjusted here.
AS3930-AN01
Demo Kit Manual
www.ams.com Revision 1.1 / 09/03/13 page 12/18
4.3.1.3 Symbol Rate
The symbol rate can be adjusted between 512 symbols/s and 4096 symbols/s. The symbol rate
must be the same as the symbol rate set for the AS3932.
4.3.1.4 Enable Buzzer
The Wake-up Transmitter Board sends out an acoustic signal whenever a packet is transmitted.
This signal can be disabled.
4.3.1.5 Wake-up Pattern (Manchester)
The wake-up pattern of the transmitter must be the same as the pattern defined for the receiver in
order to generate a successful wake-up at the receiver.
4.3.1.6 Manchester Pattern Length
This setting must also be the same as defined for the receiver to generate a successful wake-up.
4.3.1.7 Correlator
This setting must also be the same as defined for the receiver to generate a successful wake-up.
AS3930-AN01
Demo Kit Manual
www.ams.com Revision 1.1 / 09/03/13 page 13/18
5 Schematics, BOM and Layouts of Demo Kit
5.1 AS3930 Demoboard Schematic
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
Size
Date
Project Title Revision
Sheet ofOriginator JRY
AS3930 Demo Board
A3
1.1
15/02/2013 3
3
R8
240k
12
3
S1
ON
GND
GND
Y1
CC7V-T1A
C15
12p C16
12p
C9
100n
1
2
J2
IDD_AS
1
2
3
4
5
J4 SDI
GND
1
2
3
J5 DAT
CS
SCL
SDI
SDO
CL_DAT
DAT
WAKE
C7
100n
C14
100n
GND
PIC24FJ64GB
PGED1
1
PGEC1
2
RP2
3
RP3
4
VSS
5
RA2 6
RP4
8
RA4 9
VDD
10
RB5 11
VBUS 12
RP7
13
RP9 15
DISVREG 16
VCAP 17
D+
18
D-
19
VUSB 20
RP15 23
VSS 24
VDD 25
MCLR
26
RP5
27
RP6
28
RA3 7
RP8
14 RP13 21
RP14 22
EP
29
U4
PIC27FJ64GB002
1
2
3
4
5
J3 ICP
GND
R5
10k
AS1746
10
9
4
3
2
VDD 1
8
7
GND 6
5
NO1
COM1
IN1
NC1
NO2
COM2
IN2
NC2
EP 11
1
AS1746
C5
100n
GND
GND
C19
33p
VBUS
D-
D+
D-
D+
C3
1u
GND
GND
C1
10n C4
1u
GND
R1
100k
VBUS
GND
C2
10u
BATT
BATT
GND
VDD_RF
VDD_RF VDD_RF
VDD_UC
VDD_UC
GND
C10
10u
VDD_UC
D2
RS0
R10
680
D3
RS1
R11
680
D4
RS2
R12
680
D7
RS4
R15
680
D8
RS3
R16
680
LEDX
LEDY
S2
Mode
C6
10n
GND
BUTTON
GND
BUTTON
LEDX
LEDY
+-
U?
Batterie
C13
150p
C20
4.7u
GND
AS1362
IN
1
SHDNN
3
GND
2
POK 4
BYPASS 5
OUT 6
U1
AS1362
GND
R17
100k
GND
POK
L1
ANTZ
AS3930
SDI 3
SDO 4
VCC 5
GND 6
LF1P
9
LFN
10
XIN
11
XOUT
12 VSS 13
WAKE 14
DAT 15
CL_DAT 16
CS 1
SCL 2
U5
AS3930
POK
D9
ON
R20
3k9
GND
BUS_PWR 1
D- 2
D+ 3
BUS_GND 4
Shield 5
6
7
8
9
U2
USB_MINI_B
D10
24V D11
24V D12
24V
D13
Zener
GND GND GND GND
AS3930-AN01
Demo Kit Manual
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5.2 AS3930 Demoboard Layout – Top and Bottom Layer
Figure 10: AS3930 Demoboard Layout – Top Layer
Figure 11: AS3930 Demoboard Layout – Bottom Layer
AS3930-AN01
Demo Kit Manual
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5.3 AS3930 Demoboard BOM
AS3930-AN01
Demo Kit Manual
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5.4 125 kHz Wake-up Transmitter Board Schematics
5.5 125 kHz Wake-up Transmitter Board Layout
Figure 12: 125 kHz Wake-up Transmitter Board Layout – Top Layer
Figure 13: 125 kHz Wake-up Transmitter Board Layout – Bottom Layer
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
Size
Date
Project Title Revision
Sheet ofOriginator JRY
125kHz Wakeup Transmitter BoardA3 2.0
07/02/2013 3
3
C9
100n
C14
100n
GND
PIC24FJ64GB
PGED1
1
PGEC1
2
RP2
3
RP3
4
VSS
5
RA2 6
RP4
8
RA4 9
VDD
10
RB5 11
VBUS 12
RP7
13
RP9 15
DISVREG 16
VCAP 17
D+
18 D-
19
VUSB 20
RP15 23
VSS 24
VDD 25
MCLR
26
RP5
27
RP6
28
RA3 7
RP8
14 RP13 21
RP14 22
EP
29
U3
PIC27FJ64GB002
1
2
3
4
5
J2 ICP
GND R5
10k
GND
VBUS
D-
D+
D-
D+
C3
1u
GND
GND
C4
1u
GND
VBUS
GND
C1
10u
GND
+3.3V
+3.3V
GND
C11
10u
+3.3V
D7
PATTD
R16
680
D8
PATT
R17
680
D9
STANDBY
R18
680
S1
Mode
C2
10n
GND GND
AUTO
S2
Mode
C7
10n
GND GND
PATT
AUTO
PATT
S3
Mode
C8
10n
GND GND
PATT+DATA
S4
Mode
C10
10n
GND GND
STOP
NMOS1
PMOS1
VIN
3VOUT 2
GND
1
U2
AS1360
R1
100k
GND
1
2
3
J1
DC_Socket_THMD
GND
+12V
D2
SK310A
+3.3V
C6
220u
GND
27
4
GND
3
5
VCC
6
U7
TC4426ACOA1
2
8
7
4
3
5
6
G
D
S
P-MOS
N-MOS
G
S
D
U4
IRF7389
1
2
8
7
4
3
5
6
G
D
SP-MOS
N-MOS
G
S
D
U5
IRF7389
2 7
4
GND
3
5
VCC
6
U6
TC4426ACOA
D4
PMEG4010
R7 18
R8 18
R9 18
R10 18
D6
PMEG4010
D5
PMEG4010
D3
PMEG4010
GNDGND
+12V +12V
+12V
C13
100n
GND
C12
100n
+12V
GND
PMOS2
NMOS2
PMOS2
NMOS2
C5
220u
GND
D1
PMEG4010
R11
1k5
p
n
X1
Piezo
GND
A1
KGEA-BFCR
PATT+DATA
STOP
Y1
8MHz
GND
GND
J3
Pad
C17
18p
C18
18p
D10
24V
D11
24V D12
24V
D13
6.8V
GND
GNDGNDGND
BUS_PWR 1
D- 2
D+ 3
BUS_GND 4
Shield 5
nc
6nc
7nc
8nc
9
H2961CT-ND
U1
USB_SMD
AS3930-AN01
Demo Kit Manual
www.ams.com Revision 1.1 / 09/03/13 page 17/18
5.6 125 kHz Wake-up Transmitter Board BOM
6 Ordering Information
Figure 14: Ordering Information
Ordering Code Type Marking Delivery Form
1
Delivery
Quantity
AS3930-BTST 16-pin TSSOP AS3930 7 inches Tape &
Reel 1000 pcs
AS3930-BQFT QFN 4x4 16LD AS3930 7 inches Tape &
Reel 1000 pcs
1. Dry Pack: Moisture Sensitivity Level (MSL) = 3, according to IPC/JEDEC J-STD-033A.
Note: All products are RoHS compliant and ams green.
Buy our products or get free samples online at ICdirect: http://www.ams.com/ICdirect
Technical Support is available at http://www.ams.com/Technical-Support
For further information and requests, please contact us mailto: sales@ams.com
or find your local distributor at http://www.ams.com/distributor
AS3930-AN01
Demo Kit Manual
www.ams.com Revision 1.1 / 09/03/13 page 18/18
Disclaimer
Devices sold by ams AG are covered by the warranty and patent indemnification provisions
appearing in its Term of Sale. ams AG makes no warranty, express, statutory, implied, or by
description regarding the information set forth herein or regarding the freedom of the described
devices from patent infringement. ams AG reserves the right to change specifications and prices at
any time and without notice. Therefore, prior to designing this product into a system, it is necessary
to check with ams AG for current information.
This product is intended for use in normal commercial applications. Applications requiring extended
temperature range, unusual environmental requirements, or high reliability applications, such as
military, medical life-support or lifesustaining equipment are specifically not recommended without
additional processing by ams AG for each application. For shipments of less than 100 parts the
manufacturing flow might show deviations from the standard production flow, such as test flow or
test location.
The information furnished here by ams AG is believed to be correct and accurate. However, ams
AG shall not be liable to recipient or any third party for any damages, including but not limited to
personal injury, property damage, loss of profits, loss of use, interruption of business or indirect,
special, incidental or consequential damages, of any kind, in connection with or arising out of the
furnishing, performance or use of the technical data herein. No obligation or liability to recipient or
any third party shall arise or flow out of ams AG rendering of technical or other services.
Copyright
Copyright © 1997-2012, ams AG, Tobelbader Strasse 30, 8141 Unterpremstaetten, Austria-Europe.
Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted,
merged, translated, stored, or used without the prior written consent of the copyright owner.
All products and companies mentioned are trademarks or registered trademarks of their respective
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