gentec-EO THZ-D Series Terahertz Power Detector User Manual
- June 4, 2024
- gentec-EO
Table of Contents
- gentec-EO THZ-D Series Terahertz Power Detector
- WARRANTY
- GENERAL INFORMATION
- OPERATING INSTRUCTIONS
- DAMAGE TO THE OPTICAL ABSORBER MATERIALS
- OPTIONAL ACCESSORIES
- APPENDIX A
- Appendix B: THZ detectors calibration
- Appendix C: typical “Personal Wavelength Correction“
- DECLARATION OF CONFORMITY
- UKCA DECLARATION OF CONFORMITY
- Documents / Resources
gentec-EO THZ-D Series Terahertz Power Detector
WARRANTY
First Year Warranty
The Gentec-EO thermal power and energy detectors carry a one-year warranty
(from date of shipment) against material and /or workmanship defects when used
under normal operating conditions. The warranty does not cover recalibration
or damages related to misuse.
Gentec-EO will repair or replace at its option any wattmeter or joulemeter
which proves to be defective during the warranty period, except in the case of
product misuse.
Any unauthorized alteration or repair of the product is also not covered by
the warranty.
The manufacturer is not liable for consequential damages of any kind.
In the case of a malfunction, contact the local Gentec-EO distributor or
nearest Gentec-EO office to obtain a return authorization number. Return the
material to the address below.
All customers:
Gentec-EO, Inc.
445 St-Jean-Baptiste, Suite 160
Quebec, QC, G2E 5N7
Canada
Tel: 418-651-8003
Fax: 418-651-1174
Email: [email protected]
Web: www.gentec-eo.com
GENERAL INFORMATION
INTRODUCTION
The Gentec-EO THZ-D Series is made up of two high performance, thermal power
probes…THZ12D a thermopile and THZ9D a Pyroelectric. Each unit is built for
durability, compactness and ease of operation.
The THZ12D-3S-VP includes an optical absorber that exhibits nearly flat
spectral absorption from 10.6 µm to 600 µm.
The THZ9D-20mS-BL includes a black coating for broadband response from 10.6 µm
to 3000 µm. The spectral correction factors are programmed from 10.6 µm to 440
µm. It can be used at wavelengths greater than 440 µm but without wavelength
correction factors.
The THZ-D Series benefits from the use of a DB-15 male, “Smart Interface”
connector, containing an EEPROM (Erasable Electrical Programmable Read-Only
Memory) programmed with the calibration sensitivity, the spectral correction
factors at different wavelengths and other data related to the specific THZ-D
Series probe. This connector allows the monitor to automatically adjust its
setting to those of the power probe being connected.
The D0 versions of the THZ9D series, can be used with the APM-D part number
201848 (not compatible with a T-RAD Analog) and an oscilloscope or an OEM
acquisition system. Please note that the noise equivalent power will depend on
the acquisition system.
Every THZ-D Series are designed for high resistance to electromagnetic
interference.
THZ-D Series detectors are designed for user-friendly power measurement of CW
and/or Quasi CW (high rep rate) lasers using two of our standard monitors,
MAESTRO, U-LINK, or M-LINK.
THZ-D Series detectors require no external power source1. They can also be
used with a 1 M input impedance oscilloscope1 (or fast chart recorder). The
calibrated V/W sensitivity is documented in the calibration certificate of
each unit. The spectral correction of this sensitivity is
also documented in the typical “Personal wavelength correction” certificate,
see section 8.
THZ-D Series “SMART INTERFACE” CONNECTOR
The DB-15 male “Smart Interface” connector contains an EEPROM (Erasable
Electrical Programmable Read-Only Memory) programmed with the calibration
sensitivity and other data related to the specific
THZ-D wattmeter in use. Faster set-ups are obtained because the monitor
automatically adjusts to the characteristics of the wattmeter, when the “Smart
Interface” is connected to the monitor.
The DB-15 “Smart Interface” connector pin-out is (see Fig. 1-1):
- USED BY MONITORS
- ” ” ” “
- ” ” ” “
- ” ” ” “
- ” ” ” “
- “+” SIGNAL OUTPUT
- ‘’-’’ SUPPLY VOLTAGE THZ9D ONLY
- USED BY MONITORS
- ‘’+’’ SUPPLY VOLTAGE THZ9D ONLY
- USED BY MONITORS
- ” ” ” “
- ” ” ” “
- “-“ SIGNAL OUTPUT
- USED BY MONITORS
- ” ” ” “
- SHELL- COAX. SHIELD / BODY GRND
NOTE : Verify with Gentec-EO for supply voltage requirements.
THZ-D SERIES SPECIFICATIONS
The following specifications are based on a one-year calibration cycle, an operating temperature of 15 to 28ºC and a relative humidity not exceeding 80% and a storage temperature from 5 to 45 ºC with relative humidity not exceeding 80%.
| THZ9D-20mS-BL-D0
---|---
Monitor Compatibility| MAESTRO, U-LINK, M-LINK
Effective Aperture Diameter| Ø9 mm
Sensor| Pyroelectric
Absorber| BL
Projected Spectral Range| 10 – 3000 µm 2
Reference Spectral Range| 10 – 440 µm 2
Spectral Range| 10 – 440 µm 2
Calibration Wavelength| 10.6 µm
Max. Average Power| With MAESTRO : 20 mW With U-LINK or M-LINK : 25 mW
Max. Average Power Density| 50 mW/cm2
Power Noise Level (RMS)| 300 nW
Optical Chopper Frequency| 10 ± 1 Hz
Typical Rise time (0-95%)| < 0.2s
Typical Sensitivity| 120 V/W
Calibration Uncertainty| ± 5 % @ 10.6 µm ± 15 % @ 10.6-440 µm 3
Dimensions (H x W x D, in mm)| Ø38.1 x 26.2
Weight| 91 g
-
From 10 to 440µm, spectrometer measurement with multiple laser references validation.
From 440 to 600 µm, spectrometer measurement only.
From 600 to 3000 µm, relative measurement only.
For more details refer to Appendix B. -
Estimated on typical absorber spectral absorption measurements in the THz range.
| THZ12D-3S-VP-D0
---|---
Monitor Compatibility| MAESTRO, U-LINK, M-LINK
Effective Aperture Diameter| Ø 12 mm
Projected Spectral Range| 10 – 3000 µm 2
Reference Spectral Range| 10 – 440 µm 2
Spectral Range| 10 – 600 µm 2
Calibration Wavelength| 10.6 µm
Power Noise Level 4 5| ± 0.5 µW
Thermal Drift 6| 12 µW/oC
Minimum Measurable Power| 100 µW 7
Typical Rise time (0-95%)| 3.0 s
Typical Sensitivity| 200 mV/W
Calibration Uncertainty| ± 3.0 % @ 10.6µm
±8% @ 10.6-300µm 3
±15% @ 300-440µm 3
Linearity with Power| ± 2 %
Repeatability (Precision)| ± 0.5 %
Power Resolution| ± 0.5 %
Max. Average Power| 3 W
Max. Average Power (1 min) (cooling : minimum 3 min)| 3 W
Minimum Repetition Rate| 7 Hz with Anticipation 1 Hz without Anticipation
Max. Average Power Density (1 W CW)| 30 W/cm2
Max. Energy Density| < 1 J/cm2
Dimensions (H x W x D, in mm)| With isol. tube: 73 x 73 x 72| W/o isol. tube:
73 x 73 x 20
Weight (head only, with isolation tube)| 0.316 kg
Cooling| Heat sink
Recommended Load Impedance| 100 kΩ
Output Impedance| N. A.
Linearity vs Beam Dimension| ± 0.7 %
PCB Electrical Supply| N. A.
Max Output Signal| N. A.
- Nominal value, actual value depends on electrical noise in the measurement system.
- Without anticipation. ± 5 µW with anticipation.
- At 150 µW.
- Depending on thermal stability of the environment.
OPERATING INSTRUCTIONS
Used with a compatible monitor
THZ9D
Figure 2.1: THZ9D with monitor
Refer to the user manual of each monitor for further information.
THZ12D
Figure 2.2: THZ12D with monitor
Refer to the user manual of each monitor for further information.
General Instructions
-
Place the detector on its optical stand (Must use a delrin post).
-
Connect the detector to a compatible Gentec-EO laser power monitor (see Fig. 2-1). (Refer to specifications)
NOTE: The parameters programmed in the DB-15 “Smart Interface” are for a 1 M load impedance. -
Remove the detector’s protective cover, when applicable.
-
The THZ9D requires the use of an Optical Chopper running at 10 Hz. Place the optical chopper (SDC-500 or equivalent) into the laser beam path between the laser and the THZ9D. Make sure that the laser beam is fully contained within the 9 mm detector aperture.
CAUTION: Be careful not to exceed the maximum levels and densities in:
energy, peak power and average power as stated in the specifications pages.
Note: As with all thermopile or pyroelectric devices, these detectors have
some position and beam size linearity. For the most accurate measurements, the
beam should normally be centered on the sensor surface and the beam diameter
should ideally be close to that of the original calibration conditions, which
is 100% encircled power (of a semi-Gaussian beam stopped at 1/e2) applied to a
diameter equal to 80% of the detector aperture. If you use of a divergent
lens, a Lambertian diffuser, or any other method of beam spreading, please
take note that all of the laser light must be directed within the detector
aperture and that the optical losses must be known. The measurement must then
be corrected to compensate for these losses.
Working at other wavelengths than 10.6µm
The monitor will automatically configure himself using the data stored in the
EEPROM of the DB-15 “Smart Interface”. This includes the calibration
sensitivity and wavelength corrections for 20 current wavelengths 8 9.
For more precise measurements with a THZ-D Series detectors at wavelengths
other than those already corrected by the typical “Personal wavelength
correction TM’’ 8 data programmed into the “Smart Interface”, a correction
factor 9 is automatically set in the monitor to compensate for the change in
sensitivity of the wattmeter caused by the change in absorption of the optical
absorber at different wavelengths. This automatic correction is a linear
interpolation between two measured values of the typical ‘’Personal wavelength
correction’’.
THZ9D used with an oscilloscope:
Figure 2.3: THZ9D with oscilloscope
General Instructions
Please note that the noise equivalent power will depend on the acquisition system.
-
Install the wattmeter on its optical stand
-
Connect the wattmeter to the APM-D (not compatible with a T-RAD Analog) and switch it on.(Battery or power supply needed)
-
Connect the APM-D to the oscilloscope.
NOTE: The required load impedance is 1 M and ≤ 30 pF. -
Put the optical chopper (SDC-500 or equivalent) into the laser beam path and adjust the frequency at 10Hz (laser beam must be contained within the aperture).
-
Put the wattmeter head into the laser beam path after the chopper (laser beam must be contained within the aperture).
CAUTION: Be careful not to exceed the maximum levels and densities in: energy, peak
Note: power and average power as stated in the specifications pages.
As with all pyroelectric devices, these detectors have some position and beam
size sensitivity. For the most accurate measurements, the beam should normally
be centered on the sensor surface and the beam diameter should ideally be
close to that of the original calibration conditions, which is 100% encircled
power (of a semi- Gaussian beam stopped at 1/e2) applied to a diameter equal
to 80% of the detector aperture. The use of a divergent lens, a Lambertian
diffuser such as opal glass, or any other method of beam spreading, is
recommended for this purpose. Please take note that all of the laser light
must be directed within the detector aperture and that the transmission loss
through the optical component must be known.
-
Adjust the oscilloscope so it triggers on the wattmeter pulse or on the chopper sync signal.
-
Measure the baseline to peak voltage generated by the wattmeter.
-
Determine the wattmeter Volt/watt sensitivity from the detector identification label or calibration certificate. Choose the value stated for the wavelength being used.
-
Calculate the optical power using the following equation:
Power = (Vpeak-Vbaseline) / Calibration sensitivity Ex:- Vpeak-Vbaseline = 1 volt
- Detector calibration sensitivity (100 Volts / watt)
Power = 1 Volt / 100 V/W = 10 mW
NOTE: Exclude any DC offset from the pulse peak value measurement.
Working at other wavelengths than 10.6µm
For measurements with THZ-D Series detectors at wavelengths other than 10.6µm,
a correction factor must be set to compensate for the change in sensitivity of
the wattmeter caused by the change in absorption of the optical absorber at
different wavelengths.
To correct for the change in absorption refer to the spectral curve of the
typical “ Personal Wavelength Correction TM “ certificate supplied for the
wattmeter and calculate K by taking the percentage difference between the
absorption @10.6 µm and that at the desired wavelength.
DAMAGE TO THE OPTICAL ABSORBER MATERIALS
At any time, the beam’s incident area should not be less than 10% of the
detector’s aperture. Please check with Gentec-EO to make measurements with
such small beams.
Damage is usually caused by exceeding the manufacturer is specified maximum
tolerances:
- Average Power Density
- Peak Power Density
- Single Pulse Energy Density
Refer to the THZ-D Series wattmeter specifications pages. Damage can also be
caused when using a detector with a contaminated absorber or attenuator
surface.
The damage thresholds specified in the specifications section refer to a
visible alteration of the absorber surface. In practice, a slight alteration
will not affect the wattmeters response. Consider the wattmeter to be damaged
and/or out of calibration when large-scale damage is evident or you can see
the metal electrode beneath the coating10.
In the case of a TEMoo (Gaussian) beam, the maximum peak power and energy
density can be calculated using the following equation:
Where Io is the total beam power or energy W is the beam radius at 1/e2 and
= 3.1416
NOTE: The beam waist for a TEMoo beam is the radius of a circle centered
on the beam axis and containing 86 % of the beam energy. Ref.: SIEGMAN, A.E.,
An Introduction to Lasers and Masers, p. 313 (Mcgraw-Hill Series in the
Fundamentals of Electronic Science).
Example of energy density;
Io = 1 joule (total energy)
W = 1 cm
Energy density = 2 x 1 joule = 0.64 joule/cm2
π x (1 cm)2
Example of power density calculation;
Io = 1 MegaWatt (total power)
W = 1 cm
Power density = 2 x 1 MegaWatt = 0.64 MW/cm2
π x (1 cm) 2
OPTIONAL ACCESSORIES
Contact Gentec-EO for a complete list of accessories, their specifications and
features.
Partial list:
- APM-D (for connecting THZ9D Series to an oscilloscope).
- MAESTRO monitor
- U-LINK monitor
- M-LINK Monitor
- SDC-500 Optical Chopper
- Carrying case
APPENDIX A
Recycling and separation procedure for WEEE directive 2002/96/EC.
This section is used by the recycling center when the detector reaches its end
of life. Breaking the calibration seal or opening the detector will void the
detector warranty.
The complete detector contains
- 1 Detector with wires or DB-15.
- 1 CD (instruction manual, software and drivers)
- 1 calibration certificate
6.2 Separation
Paper: certificates
Wires: Cable Detector.
Printed circuit board: inside the Detector and DB-15, no need to separate
(less than 10 cm2). Aluminum: Detector casing.
Appendix B: THZ detectors calibration
Gentec-EO has made significant improvement in the accuracy of the calibration of THZ power detector. We have developed a rigorous calibration method and new thermal THz detector that allow absolute power and energy measurement based on a validated reference curve from 10 µm to 440 µm (30 THz to 0.70 THz) and on PTB international THZ gold standard. The purpose of this application note is to explain the new method of calibration and validation for Gentec-EO THz detectors and to characterize its new spectrally flat THz Thermal Probe.
CALIBRATING IN THE THz REGION – A CHALLENGE
Typical traceable detector calibration methods involve the calibration at one
particular wavelength with traceable Gold Standard previously obtained from a
recognized international institution such as NIST in USA and PTB in Germany
(most typical wavelength are 1.064 or 10.6 μm). In addition, the relative
spectral absorption of the sensor is determined, using a Near IR (0.25 to 2.5
μm) spectrometer and a traceable spectral standard. A wavelength correction
factor is then applied to provide the best possible calibration uncertainty
over the detector’s calibrated spectral range. Both calibration systems need
to be traceable to an international calibration laboratory. Calibration can
then be called traceable to NIST and/or other recognized international
standards laboratory. Thus, with quantitative traceability, the total
uncertainty of the calibration can be calculated and specified. It is
important to know that, however, the calibrated range using this method is
somewhat limited and doesn’t cover the complete THz wavelength range.
The rapidly expanding development of THz sources, both CW and Pulsed, has
posed numerous challenges to our industry, including how to make accurate
measurements of power and energy. One of the biggest difficulties is that
before 2009 there was no recognized international calibration standard or
service available that covered THz spectrum. This has forced us to offer THz
products that are not calibrated in the THz range and can therefore only be
used for relative measurements. However, in 2009 the staff at PTB in Germany
announced that they now provide traceable calibration of THz detectors at the
single wavelength 119 μm (or 2.52 THz) with an accuracy of ±15%. Now, they
have expanded their calibration capabilities from 70 and to 288µm (or 4.25 THz
to 1.04 THz) with better uncertainty (±4%). We are working very closely with
PTB Germany and NIST USA and other well-known international laboratories in
order to take advantage of these new standards and to continue to develop
better calibration methods for the Gentec-EO THz product line.
Because of the lack of calibrated spectral reference in the THz range, it has
been critical that Gentec EO develop a new spectrally flat absorber for a THz
sensor that became available on the market in 2011. It has been demonstrated
that our organic black and metallic coatings display significant changes in
sensitivity in the THz range and thus cannot be used as a wavelength
reference. In order to be a valid THz detector reference, the optical
absorption must be measured with high accuracy. This requires measuring the
total reflectance, both specular and diffuse. In addition, the transmission of
the material must be negligible.
Currently, only specular reflectance can be measured in the spectral range of
interest; 10 μm to 440 μm. Thus, it was an essential requirement that our new
absorber have only specular reflectance and negligible diffuse reflectance. In
addition, a very high and constant absorption throughout the THz range is also
necessary because of the lack of multi-wavelength THz standards in the World.
THE BREAKTHROUGH
Gentec-EO has intensified its THz development program in recent months, which
has led to a technical breakthrough. We have discovered a spectrally flat and
very high absorption material for the THz range, from 10 μm to 440 μm (and up
to 600 μm) that it is used as the THz absorber for our new thermal probe. This
probe, model THZ12D-3S-VP, is believed to be the first low uncertainty (±8%)
spectral reference in this portion of broad THz spectral range.
Figure 1 below shows the spectral absorption of two Gentec-EO THz detectors.
The red curve represents the low uncertainty “reference absorption spectrum”
for our new THZ12D-3S-VP probe. The blue curve gives the typical relative
absorption of our “BL” coated Pyroelectric THz probes THZ9D-20mS-BL. The
Pyroelectric THz probes cannot be considered as a reference detector for this
portion of the Terahertz spectrum, but can be used for relative measurements
over the entire THz spectrum (30 THz to 0.1 THz). The reference absorption
curve of the new THZ12D-3S-VP was first validated through extensive
reflectance measurements together with multiple single wavelength power
measurements using the INO SIFIR-50 gas laser and calibrated Gold standards
from PTB with power sensitivity measurements at 119 µm made in 2012 and more
recently in 2014 at 119 µm, 70.5 µm, 215 µm and 288 µm. 
FIGURE 1: Reference Spectral Absorption Curves and Traceable Power
measurements for Wavelength Response Validation
In collaboration with the INO (National Institute of Optics) located in Quebec
City, Canada, we have characterized our THz detector absorbance at different
wavelengths (from 3 μm to 430 μm) using FTIR spectrometers that employ
multiple sources to measure over this range. In between the different
wavelengths delivered by the source, sensitivities were interpolated from the
FTIR absorption curve. The absolute power of the source was measured with two
different methods in order to increase the degree of confidence in the
measurement.
FTIR absorption curves were validated in the 0.25 μm to 2.5 μm region with our
in-house traceable absorption measurement spectrometer.
In addition, traceable sensitivity measurements were made at 10.6 μm against a
NIST gold standard and at 119 μm against a PTB gold standard using our THZ12D-
3S-VP and THZ9D-20mS-BL PTB traceable detectors. In 2012, the THZ12D-3S-VP-D0
accuracy at 119µm (2.52 THz) was ±15%, but now in 2015 has been reduced to ±4%
and with additional wavelengths of 70.5 µm, 215 µm and 288 µm with a similar
uncertainty.
These calibrated power measurements are shown on Figure 1 (Red and Blue dots).
As can be seen from the red curve in figure 1, we have successfully created a
thermal THz detector that meets our two criteria, for a low uncertainty
reference, flat spectral response and high absorption. The spectral response
of the THZ12D is the same at 10.6 μm versus our NIST gold standard and at 119
μm versus the PTB Gold standard measurement. Furthermore, the absorption
variation from 10.6 μm to 600 μm is of the order of ± 4% and ± 2.5% from 119
μm to 600 μm. In addition, other points of validation were made using INO
measurements. A very good agreement has been obtained with the THZ12D-3S-VP
and THZ9D-20mS-BL PTB Gold detectors.
THE NEW CALIBRATION METHOD
- Gentec-EO calibrates its THZ12D-3S-VP detector using a stable 10.6 μm laser and a NIST Gold Standard Power Detector.
- A validation of the detector is made to ensure its good working condition and that its behaviour conforms to the specifications at this wavelength and to other detectors of this type according to the reference absorption curve.
- Traceable Sensitivity for the THZ12D-3S-VP detectors at ±8% from 10.6 µm to 300 µm and ±15% from 300 µm to 440 µm is calculated using the reference absorption curve, as determined by traceable power measurements validation process mentioned in this document. It is then programmed in the EEPROM of the detector for each wavelength between 10 μm to 440 μm (30 THz to 0.68 THz). Beyond 440 µm (0.68 THz) the spectral absorption is estimated.
- Typical Sensitivity for the THZ9D-20mS-BL and similar Pyroelectric THz detectors is calculated using the typical absorption BL curve. It is then programmed in the EEPROM of the detector for each wavelength between 10 μm to 440 μm (30 THz to 0.68 THz). Beyond 440 μm (0.68 THz), the spectral absorption is estimated. Traceable Sensitivity is determined at 10.6 μm with NIST Gold standard.
FUTURE DEVELOPMENTS
Gentec-EO is working with major organizations defining international
standards. As soon as one of these organizations will offer a broadband
standard in the THz region, we will integrate it into our calibration method
and be able to guarantee a calibration uncertainty with traceability.
Gentec-EO THz detectors are being calibrated by recognized international
standards laboratory in order to provide a Gold THz standard for calibration
services.
We will continue to update you on the state of the art of calibration of our
THz Detectors and Instruments as new developments occur.
Appendix C: typical “Personal Wavelength Correction“
DECLARATION OF CONFORMITY
Application of Council Directive(s): 2004/108/EC EMC Directive
Manufacturer’s Name: Gentec Electro Optics, Inc.
Manufacturer’s Address: 445 St-Jean Baptiste, suite 160 (Québec), Canada G2E
5N7
Representative’s Name: Laser Component S.A.S
Representative’s Address: 45 bis Route des Gardes 92190 Meudon (France)
Type of Equipment: Laser Power/Energy Meter
Model No.: UM & XLP Year of test & manufacture: 2011
Standard(s) to which Conformity is declared: EN 61326-1: 2006 Emission generic
standard
| Standard | Description | Performance Criteria |
|---|
CISPR 11 :2009
+A1 2010
| Industrial, scientific and medical equipment – Radio- frequency
disturbance characteristics – Limits and methods of measurement| Class
A
EN 61000-4-2:2009| Electromagnetic compatibility (EMC) –
Part 4-2: Testing and measurement techniques-
Electrostatic| Class B
EN 61000-4-3:2006
+A2:2010
| Electromagnetic compatibility (EMC) – Part 4-3:
Testing and measurement techniques- Radiated, Radio Frequency,
electromagnetic field immunity| Class A
EN 61000-4-4 2004
+A1:2010
| Electromagnetic compatibility (EMC) – Part 4: Testing and measurements
techniques- Section 4: Electrical fast transient/burst immunity.|
Class B
EN 61000-4-6 2009| Electromagnetic compatibility (EMC) – Part 4:
Testing and measurements techniques- Section 6:
Immunity to conducted Radio Frequency.| Class A
the undersigned, hereby declare that the equipment specified above conforms to the above Directive(s) and Standard(s)
UKCA DECLARATION OF CONFORMITY
Application of Council Directive(s): 2004/108/EC EMC Directive
Manufacturer’s Name: Gentec Electro Optics, Inc.
Manufacturer’s Address: 445 St-Jean Baptiste, suite 160 (Québec), Canada G2E
5N7
Representative’s Name: Laser Component S.A.S
Representative’s Address: 45 bis Route des Gardes
92190 Meudon (France)
Type of Equipment: Laser Power/Energy Meter
Model No.: UM & XLP Year of test & manufacture: 2011
Standard(s) to which Conformity is declared: EN 61326-1: 2006 Emission generic
standard
| Standard | Description | Performance Criteria |
|---|
CISPR 11 :2009
+A1 2010
| Industrial, scientific and medical equipment – Radio- frequency
disturbance characteristics – Limits and methods of measurement| Class
A
EN 61000-4-2:2009| Electromagnetic compatibility (EMC) –
Part 4-2: Testing and measurement techniques-
Electrostatic| Class B
EN 61000-4-3:2006
+A2:2010
| Electromagnetic compatibility (EMC) – Part 4-3:
Testing and measurement techniques- Radiated, Radio Frequency,
electromagnetic field immunity| Class A
EN 61000-4-4 2004
+A1:2010
| Electromagnetic compatibility (EMC) – Part 4: Testing and measurements
techniques- Section 4: Electrical fast transient/burst immunity.|
Class B
EN 61000-4-6 2009| Electromagnetic compatibility (EMC) – Part 4:
Testing and measurements techniques- Section 6: Immunity to
conducted Radio Frequency.| Class A
Documents / Resources
|
gentec-EO THZ-D Series Terahertz Power
Detector
[pdf] User Manual
THZ-D Series, Terahertz Power Detector, Power Detector, THZ-D Series, Detector
---|---