THORLABS LCC3111H User manual

Liquid Crystal Noise Eaters
User Guide

Liquid Crystal Noise Eater
Page 1 Rev C, Dec 8, 2015
Table of Contents
Chapter 1Warning Symbol Definitions ...........................................2
Chapter 2Safety.................................................................................3
Chapter 3Product Overview.............................................................4
Chapter 4Setup..................................................................................5
4.1.MountingandAlignment...............................................5
4.2.PowerSupply.................................................................6
4.3.PoweringONtheNoiseEater.........................................6
4.4.BeamCentering.............................................................6
Chapter 5Operation...........................................................................7
5.1.SelectingthePowerRange............................................7
5.2.ModulatetheOutputPower........................................10
5.3.SettingtheOutputPowerLevel...................................10
5.3.1.Maximizing the Output Power Using an External Measurement
Device........................................................................................11
5.3.2.Maximizing the Output Power Using the Indicator LED.............12
Chapter 6Specifications.................................................................13
Chapter 7Mechanical Drawing.......................................................15
Chapter 8Maintenance....................................................................16
8.1.Troubleshooting..........................................................16
Chapter 9Regulatory.......................................................................17
9.1.WasteTreatmentisYourOwnResponsibility...............17
9.2.EcologicalBackground.................................................17
Chapter 10Thorlabs Worldwide Contacts.......................................18

Liquid Crystal Noise Eater Chapter 1: Warning Symbol Definitions
Page 2
Chapter 1 Warning Symbol Definitions
Below is a list of warning symbols you may encounter in this manual or on your
device.
Symbol Description
Direct Current
Alternating Current
Both Direct and Alternating Current
Earth Ground Terminal
Protective Conductor Terminal
Frame or Chassis Terminal
Equipotentiality
On (Supply)
Off (Supply)
In Position of a Bi-Stable Push Control
Out Position of a Bi-Stable Push Control
Caution: Risk of Electric Shock
Caution: Hot Surface
Caution: Risk of Danger
Warning: Laser Radiation
Caution: Spinning Blades May Cause Harm

Liquid Crystal Noise Eater
Page 3 Rev C, Dec 8, 2015
Chapter 2 Safety
Do Not Open Housing!
The Noise Eater has no user-serviceable parts. Service should only be
performed by trained service personnel.
All statements regarding safety of operation and technical data in this instruction
manual will only apply when the unit is operated correctly.
WARNING
Laser Radiation – Avoid Exposure to Beam

Liquid Crystal Noise Eater Chapter 3: Product Overview
Page 4
Chapter 3 Product Overview
Thorlabs’ Liquid Crystal Noise Eaters are precision instruments for stabilizing and
attenuating laser power. The noise eater consists of a variable attenuator (liquid
crystal wave plate and polarizer), a calibrated beam splitter, and a servo
controller to control the modulator, as depicted in the block diagram below.
Figure 1 Noise Eater Block Diagram
Linearly polarized light is input into the liquid crystal retarder, which, together with
the output polarizer, acts as a variable retarder. A beamsplitter then sends a
small part of the beam to a feedback loop consisting of a photodiode and control
servo. The servo compares the optical signal to a preset signal level and applies
the appropriate adjustment voltage until the optical signal reaches the desired
level.
The noise eater can also be used as a variable attenuator even without the
presence of noise. By adjusting the resistance of the potentiometer, the user can
set the desired output power level.

Liquid Crystal Noise Eater
Page 5 Rev C, Dec 8, 2015
Chapter 4 Setup
4.1. Mounting and Alignment
The noise eater is designed to work with linearly polarized input light aligned with
the direction of the arrow near the input aperture. Linearly polarized light and
proper alignment of the direction of polarization are important for achieving the
best results from the noise eater.
In order to minimize optical losses, the noise eater does not have an input
polarizer. If the incident light is not linearly polarized, a linear polarizer (such as
our LPVIS or LPNIR polarizers) should be used before the noise eater.
If the incident light is linearly polarized but is not aligned exactly vertically or
horizontally, a half-wave plate can be used before the noise eater to rotate the
polarization axis. As shown in the photo below, the noise eater’s cage mount can
be used along with a CRM1 cage rotation mount to rotate the half-wave plate,
thus aligning the polarization axis with the noise eater.
Figure 2 CRM1 Cage Rotation Mount holding a Mounted Half-Wave Plate
(such as the WPH10M-633), secured to the LCC3111H Noise Eater with ER
Cage Rods
For post mounting, the noise eater is equipped with two 8-32 (M4) threaded
holes. These holes are offset by 90°, so that light with a vertical or horizontal
polarization axis can be aligned with the noise eater. The four 4-40 holes on the
front of the noise eater can also be used to mount the noise eater in either a
horizontal or vertical orientation using the Thorlabs Cage System

Liquid Crystal Noise Eater Chapter 4: Setup
Page 6
Figure 3 Horizontally and Vertically Mounted LCC3111H Noise Eaters. Note
the direction of the input polarization indicated by the double arrow.
4.2. Power Supply
The noise eater operates with 12 V DC power. We recommend using the AC/DC
power supply that is included with the noise eater for best performance.
4.3. Powering ON the Noise Eater
When the noise eater is connected to the power supply, it automatically powers
on. There is no additional power switch.
4.4. Beam Centering
For best performance of the noise eater, it is recommended that the beam is well
centered in the input aperture. Due to the optical path inside the noise eater, the
output beam will be shifted down by 1.0 mm if the noise eater is mounted
vertically as shown in Figure 3 (right). Similarly, the output beam will be shifted
sideways by 1.0 mm if the noise eater is mounted horizontally as in Figure 3
(left).

Liquid Crystal Noise Eater
Page 7 Rev C, Dec 8, 2015
Chapter 5 Operation
5.1. Selecting the Power Range
The LCC3112H and LCC3113H have two selection switches at the top of the
case which are used to select the input power range. When the high/low power
switch is set to “LOW”, the input power range can be set from 1 mW to 30 mW,
and when the status switch set to “HIGH”, the input power range can be set from
100 mW to 500. The LCC3111H and LCC3111L have only one selection switch
which can set the input power range from 1 mW to 30 mW or 100 mW to 500
mW. The power selector should be set to the lowest value that is still higher than
the actual power of the laser. For example, if the LCC3111L is being used with a
beam power of 8 mW at 635 nm, the selector should be set to 10 mW.
Figure 4 Top View of the LCC3111L (Left), LCC3111H (Center) and
LCC3112H/LCC3113H (Right) Noise Eaters
The LCC3111H and LCC3112H noise eaters use a Silicon detector, while the
LCC3113H uses a Germanium detector, as part of the feedback loop. The
responsivity of the detector is different for different wavelengths, and so the
power settings on the selector only correspond to the design wavelength of the
detector (635 nm for LCC3111H and LCC3111L, 780 nm for LCC3112H, 1550
nm for LCC3113H). The power range at a given wavelength is inversely
proportional to the responsivity (higher responsivity value will result lower power
range value). The graph below shows the relative responsivity of both detectors
at a range of wavelengths. The tables below show a rough estimate of the power
settings at various wavelengths for each model.

Liquid Crystal Noise Eater Chapter 5: Operation
Page 8
Figure 5 Noise Eaters Normalized Responsivity
5.2. Max Powers at Various Wavelengths
The tables below list the maximum input powers for each noise eater, specified
for a variety of input wavelengths and switch settings. Please note that these
maximum power levels correspond to the feedback electronics of the noise eater,
and in some cases, the actual maximum input power is instead limited by the
damage threshold of the noise eater. For the high power noise eaters
(LCC3111H, LCC3112H, and LCC3113H), this damage threshold is 8 W/cm2,
which corresponds to a maximum input power of 1 W if the input power is
distributed evenly across the Ø4 mm clear aperture. For the low power noise
eaters (LCC3111L, LCC3111, LCC3112, and LCC3113), the damage threshold
is 0.8 W/cm2, which corresponds to a maximum input power of 100 mW if the
input power is again distributed evenly across the Ø4 mm clear aperture.

Liquid Crystal Noise Eater
Page 9 Rev C, Dec 8, 2015
LCC3111H Max Input Power at Various Wavelengths
Switch
Status Power Level at 450 nm Power Level at 550 nm Power Level at 635 nm
100 mW 200 mW 150 mW 100 mW
300 mW 600 mWa450 mW 300 mW
500 mW 1000 mWa750 mWa500 mW
LCC3111L Max Input Power at Various Wavelengths
Switch
Status Power Level at 450 nm Power Level at 550 nm Power Level at 635 nm
1 mW 2 mW 1.5 mW 1 mW
3 mW 6 mW 4.5 mW 3 mW
5 mW 20 mW 15 mW 10 mW
30 mW 60 mW 45 mW 30 mW
LCC3112H Power Ranges at Various Wavelengths
Switch
Status
Power
Level at
650 nm
Power
Level at
700 nm
Power
Level at
780 nm
Power
Level at
900 nm
Power
Level at
1000 nm
Power Level
at 1100 nm
Low A 1.2 mw 1.1 mW 1 mW 0.9 mW 0.9 mW 3.3 mW
Low B 3.5 mW 3.3 mW 3 mW 2.6 mW 2.7 mW 10.0 mW
Low C 11.8 mW 11.1 mW 10 mW 8.8 mW 8.9 mW 33.3 mW
Low D 35.5 mW 33.3 mW 30 mW 26.3 mW 26.8 mW 100.0 mW
High A 120.0 mW 111.0 mW 100 mW 86.0 mW 89.3 mW 333 mW
High B 355.5 mW 333.0 mW 300 mW 258.0 mW 268 mW 999 mWa
High C 600.0 mWa500 mW 500 mW 430.0 mW 446.6mW 1650 mWa
LCC3113H Power Ranges at Various Wavelengths
Switch
Status
Power
Level at
1050 nm
Power
Level at
1150 nm
Power
Level at
1250 nm
Power
Level at
1350 nm
Power
Level at
1450 nm
Power
Level at
1550 nm
Power
Level at
1620 nm
Low A 1.9 mW 1.6 mW 1.4 mW 1.2 mW 1.0 mW 1 mW 1.6 mW
Low B 5.8 mW 4.8 mW 4.1 mW 3.5 mW 3.1 mW 3 mW 4.8 mW
Low C 19.2 mW 16.0 mW 13.7 mW 11.7 mW 10.4 mW 10 mW 16 mW
Low D 57.6 mW 48.0 mW 41.1 mW 35.1 mW 31.3 mW 30 mW 48 mW
High A 190 mW 160 mW 137 mW 117 mW 104.7 mW 100 mW 160 mW
High B 500 mW 480 mW 411 mW 351 mW 313.4 mW 300 mW 480 mW
High C 835 mWa800 mWa685 mWa585 mWa520 mWa500 mW 800 mWa
a. The maximum power levels specified here are for the feedback electronics, but the maximum
input power at these settings is limited by the damage threshold of the liquid crystal retarder,
which is 8 W/cm2. See the section 5.2, Max Powers at Various Wavelengths, for details.

Liquid Crystal Noise Eater Chapter 5: Operation
Page 10
5.3. Modulate the Output Power
There is a SMC interface at the right side of the noise eater, which can be used
to modulate the attenuation of the noise eater. The modulation input has a 10 k
input impedance. A voltage ranging from 0 to 2.5 V can be input to modulate the
output power as needed. Before modulating the output power, first turn the
output power level knob clockwise to the end of its travel (minimum output power
setting).
Figure 6 Modulated Output Power with a Sinusodial Input Signal (Left) and
SMC Modulation Input (Right)
Figure 7 Noise Eaters Modulation Performance
5.4. Setting the Output Power Level
The noise eater operates by varying how much of the signal is attenuated in
order to reach the target output power and attenuate the noise. Since the noise
eater can attenuate the signal but not amplify it, the clean output beam can only

Liquid Crystal Noise Eater
Page 11 Rev C, Dec 8, 2015
have a power as high as the minimum power level of the noisy signal. In practice,
to remove all noise without unnecessarily attenuation the signal power, the
output power level should be set to slightly lower than the minimum power of the
noisy signal.
There are two methods to maximize the output power while still maintaining a
clean output signal. One method uses an external device such as an optical
power meter, while the other uses the LED indicator on the noise eater.
Figure 8 Example of a noisy input beam and set output levels.
5.4.1. Maximizing the Output Power Using an External
Measurement Device
To set the target output to a point that attenuates all noise, but does not
unnecessarily attenuate the signal’s power, first observe the characteristics of the
noise of the signal, either by using the statistics screen on the Thorlabs’ PM200
optical power meter, or using a detector and an oscilloscope. Once the minimum
power level of the noisy signal is established, adjust the output power of the
noise eater to an output level slightly below the minimum of the noisy signal.
To set the output power, use the following procedure:
1. After mounting and connecting the noise eater, set the power selector to the
highest value, and turn the knob all the way counterclockwise to maximize the
output power.
2. Using an optical power meter or a detector and oscilloscope, record the
minimum output power of the signal. Note: Depending on the characteristics of
the noise, the signal might need to be recorded over a few minutes to find the
minimum.

Liquid Crystal Noise Eater Chapter 5: Operation
Page 12
3. Set the power selector to the suitable value (see Section 5.1).
4. Turn the adjustment knob clockwise until the power reaches 5% below the
minimum power you recorded earlier. If you cannot reach the desired power, set
the power level to a lower range. Rotate the knob counter clockwise and return to
Step 3 to select a different power range.
Note: In some cases setting the power level to 10% below the recorded minimum
gives better performance. If you cannot reach the desired output power by
adjusting the knob, then adjust the power range.
5. Measure the noise level after the noise eater to verify that the noise eater is
set up correctly.
Note: When measuring the signal after the noise eater, please remember that the
noise eater will attenuate noise up to 2.5 kHz, with the best performance for
noise in the DC-100 Hz range. If you are observing the signal in time domain, the
time domain signal will include noise in higher frequencies. To best observe the
performance of the noise eater, we recommend using a low pass filter, or looking
at lower frequencies in the frequency domain.
5.4.2. Maximizing the Output Power Using the Indicator LED
The noise eater is equipped with an indicator LED at the top (near the adjustment
knob), which indicates the status using two colors. A red LED indicates that the
output is set too high and the feedback loop cannot function well. A green LED
indicates that the feedback loop is operating well and the feedback signal is
being used to attenuate the noise.
If you do not wish to use an external device, such as a power meter or detector, it
is possible to adjust the knob using the LED indicator by following these steps:
1. Set the power selector to the suitable value (see Section 5.1) according to the
power of the source.
2. Turn the knob counterclockwise all the way, until the LED turns red.
3. Start turning the knob clockwise slowly until the LED starts blinking, alternating
between red and green.
4. Continue turning the knob until the LED turns green and stops blinking.
5. If, after turning the knob all the way clockwise, the LED does not stop blinking
and stay green, return to Step 1 and set the power selector to a lower value.
6. To increase the noise attenuation, rotate the knob more in the clockwise
direction.
Note: By setting the output level using the LED you are assuring that the noise
eater is entering the noise attenuation range. However, the LED alone does not
guarantee best noise attenuation and power loss performance. To maximize the
noise attenuation while minimizing power loss, we recommend setting the
optimal output power using an external measurement device.

Liquid Crystal Noise Eater
Page 13 Rev C, Dec 8, 2015
Chapter 6 Specifications
Item # LCC3111L LCC3111H LCC3112H LCC3113H
Operating Wavelength
Range 425 – 650 nm 475 – 650 nm 650 – 1050 nm 1050 – 1620 nm
Output Power
Stabilitya0.05% (Standard Deviation)
Noise Attenuation
Frequency Range DC-1.8 kHz DC-2.5 kHz DC-1.4 kHz
Noise Attenuation
Amplitude Range 0.1% to 50% of Input Signal
Noise Attenuation
Factorb>150 at 10 Hz, 80 at 60 Hz,
20 at 400 Hz, 4 at 1 kHz
>150 at 10 Hz,
80 at 60 Hz,
10 at 400 Hz,
1.5 at 1 kHz
Transmission >85%
@ 635 nm
>80%
@ 635 nm
>85%
@ 780 nm
>85%
@ 1550 nm
Max Input Power See Section 5.2, Max Powers at Various Wavelengths
Min Input Power 0.5 mW 30 mW 0.5 mW
Laser Damage
Threshold (CW)c0.8 W/cm28 W/cm2
Output Power
Attenuation Factor
Ranged1 - 40 1 - 5
Internal Polarizer
Blocking Damage
Threshold 1 W/cm210 W/cm2
Attenuation Control Onboard Potentiometer (10 Turns)
Input Aperture 5 mm
Input Beam Diametere4 mm (Max)
Output Displacement 1 mm Vertically (in the Direction of Input Polarization)
Max Beam Divergence 5 mrad
Max Incidence Angle ±2°
Input Polarization
Tolerance ±3°
Wavefront Distortion ≤λ/4 at 635 nm ≤λ/2 at 635 nm ≤λ/2 at 635 nm
AR Coating Ravg <0.5% from 400 – 650 nm Ravg <0.5% from
650 – 1100 nm
Ravg <0.5% from
1050 – 1620 nm
Modulation Input SMC Connector, 10 kInput Impedance, 0 – 2.5 V
Min Extinction Ratio
f
512.6 7.7 6.5
Min Rise/Fall Timeg0.65/7.3 ms 0.75/11.5 ms 2.8/25 ms
Mounting Two 8-32 (M4) Threaded Holes for Post Mounting
30 mm Cage System Compatible, Ø1" Lens Tube Compatible
Operating
Temperature 15°C to 45°C

Liquid Crystal Noise Eater Chapter 6: Specifications
Page 14
a. RMS value over 8 hours.
b. Noise attenuation factor is the ratio of noise amplitude before and after
the noise eater. Tested at 100 mW input power with a noise amplitude of
5% of the input signal. See detailed noise attenuation plots at
thorlabs.com for more information
c. Max Input Power and Laser Damage Threshold are wavelength-
independent. Additionally, the absolute maximum input power varies with
wavelength. See Section 5.2 for details.
d. Range of output power adjustment for a given input power level.
e. Specified for a 1/e2beam diameter.
f. Extinction ratio is the ratio of the signal power at minimum attenuation to
the signal power at full attenuation.
g. Rise time is measured on the rising edge of the output intensity from 10%
to 90% of full output power.

Liquid Crystal Noise Eater
Page 15 Rev C, Dec 8, 2015
Chapter 7 Mechanical Drawing
All noise eater models have an identical case and physical dimensions. The
LCC3111L/M, LCC3111H/M, LCC3112H/M, and LCC3113H/M have M4 tapped
holes instead of 8-32 tapped holes.
27.0 mm
(1.06")
79.5 mm
(3.13")
4-40 Tapped Holes for 30 mm Cage System (4 Places)
SMC Modulation Input
60.0 mm
(2.36")
20.0 mm
(0.79")
20.0 mm
(0.79")
19.0 mm
(0.75")
Ø5.0 mm
(0.20")
20.0 mm (0.79")
20.0 mm (0.79")
20.0 mm
(0.79")
SM1 (1.035"-40) Threads
8-32 (M4 x 0.7) Tapped Hole
8-32 (M4 x 0.7) Tapped Hole
4-40 Tapped Holes for 30 mm Cage Systems (4 Places)
60.0 mm
(2.36")
13.5 mm
(0.53")
13.5 mm
(0.53")

Liquid Crystal Noise Eater Chapter 8: Maintenance
Page 16
Chapter 8 Maintenance
The noise eater does not require maintenance under normal operating
conditions.
There are no serviceable parts in the noise eater and no reason to open the unit.
If you suspect a problem with your noise eater, please call Thorlabs and a
member of our Technical Support team will be happy to assist you.
8.1. Troubleshooting
Problem Solutions
No Output Power
Turn the power selector to its maximum value and turn the knob all
the way counter clockwise. At this point the noise eater should not
attenuate the beam. If you still have no output power then verify
that the beam is properly aligned to enter the center of the noise
eater’s aperture, and that the beam is perpendicular to the noise
eater’s body. If there is still no optical output power, please verify
that your laser’s operating wavelength and power are within the
specified ranges for the noise eater.
Low Noise Attenuation
Noise attenuation performance depends on many parameters,
including target output power setting and alignment of the beam. If,
after fine tuning the set-point (see section 4.6), the noise
attenuation is still not high enough, we recommend fine tuning the
input polarization of the beam using a linear polarizer and verifying
that the beam is well centered and that the beam path is
perpendicular to the noise eater’s body.
Output is Unstable
1) Check the polarization direction of the input light.
2) If the LED is blinking, or if it is red, you need to reduce
the output power by rotating the knob counterclockwise,
or by selecting a lower power range and readjusting the
knob.
3) The angle of incidence of the input light could be too
high. Make sure the angle of incidence is lower than 2°.

Liquid Crystal Noise Eater
Page 17 Rev C, Dec 8, 2015
Chapter 9 Regulatory
As required by the WEEE (Waste Electrical and Electronic Equipment Directive)
of the European Community and the corresponding national laws, Thorlabs offers
all end users in the EC the possibility to return “end of life” units without incurring
disposal charges.
This offer is valid for Thorlabs electrical and electronic equipment:
Sold after August 13, 2005
Marked correspondingly with the crossed out
“wheelie bin” logo (see right)
Sold to a company or institute within the EC
Currently owned by a company or institute
within the EC
Still complete, not disassembled and not
contaminated
As the WEEE directive applies to self contained
operational electrical and electronic products, this end of
life take back service does not refer to other Thorlabs products, such as:
Pure OEM products, that means assemblies to be built into a unit by the
user (e.g. OEM laser driver cards)
Components
Mechanics and optics
Left over parts of units disassembled by the user (PCB’s, housings etc.).
If you wish to return a Thorlabs unit for waste recovery, please contact Thorlabs
or your nearest dealer for further information.
9.1. Waste Treatment is Your Own Responsibility
If you do not return an “end of life” unit to Thorlabs, you must hand it to a
company specialized in waste recovery. Do not dispose of the unit in a litter bin
or at a public waste disposal site.
9.2. Ecological Background
It is well known that WEEE pollutes the environment by releasing toxic products
during decomposition. The aim of the European RoHS directive is to reduce the
content of toxic substances in electronic products in the future.
The intent of the WEEE directive is to enforce the recycling of WEEE. A
controlled recycling of end of life products will thereby avoid negative impacts on
the environment.
Wheelie Bin Logo

Liquid Crystal Noise Eater Chapter 10: Thorlabs Worldwide Contacts
Page 18
Chapter 10 Thorlabs Worldwide Contacts
For technical support or sales inquiries, please visit us at
www.thorlabs.com/contact for our most up-to-date contact information.
USA, Canada, and South America
Thorlabs, Inc.
sa[email protected]
[email protected]
Europe
Thorlabs GmbH
[email protected]
France
Thorlabs SAS
[email protected]
Japan
Thorlabs Japan, Inc.
[email protected]
UK and Ireland
Thorlabs Ltd.
[email protected]
[email protected]
Scandinavia
Thorlabs Sweden AB
[email protected]
Brazil
Thorlabs Vendas de Fotônicos Ltda.
[email protected]
China
Thorlabs China
[email protected]

Ko nform itätserklä ru n g
Declaration of Conform ity
Déclaration de Conformité
Thorlabs Optical Electronic Technology(Shanghai) Co.,Ltd
Room 4101, No.100, Lane 2891, South Qilianshan Rd., Shanghai
erklärt in alleiniger Verantwortung, dass das Produkt:
declares under it's own responsibility, that the product:
declare sous notre seule responsabilité, que le produit:
LCC31 11L, LCC3111L/M, LCC3I 11H, LCC3111H/M,
LCC31 12H, LCG3112HlM, LCC3113H, LCC3I l3H/M,
LCC3í ',12, LCC3112IM, LCC3113, LCC31 13/M
mit den Anforderungen der Normen
fulfills the requirements of the standard
satisfait aux exigences des normes
2006/95 EC
EMC 2004/108/EC
EN 61010-1 :2001
EN 61326-1:2006
CISPR 11 Edition 4'.2003
CISPR 11 Edition 4.2003
tEc 61000-3-2,
tEc 61000-3-3
tEc 61000-4-2
rEC 61000-4-3
tEc 61000-4-4
tEc 61000-4-5
tEC 61000-4-6
tEc 61000-4-11
2011165tEU
Dachau, 14. January 2014
Ort und Datum der Ausstellung
Place and date of issue
Lieu et date d'établissement
LowVoltage Directive 12.Dec. 2006
Electromagnetic Compatibility Directive
Safety of Test and Measurement Equipment
EMC of Test and Measurement Equipment
Conducted Emissions
Radiated Emissions
Harmonics
Voltage Fluctuation and Flicker
Electrostatic Discharge
Radiated lmmunity
Electrical Fast TransienlBurst, Power Leads
Surge lmmunity, Power Leads
Conducted lmmunity, Power Leads
Voltage Dips, lnterrupts and Variations
RoH52 DIRECTIVE
übereinstimmt und damit den Bedingungen entspricht.
and therefore corresponds to the regulations of the directive
et répond ainsi aux dispositions de la directive.
è=Qx**-
Name und Unterschrift des Befugten
Name and signature of authorized person
Nom et signature de la personne autorisée