CN0423 EMC/EMI Measurement Results · Web viewAs per IEC 61000-4-3 for industrial, the test was...

CN0423 EMC/EMI Measurement ResultsConducted ImmunityAs per IEC 61000-4-6 for Industrial. The EUT is placed on an insulating support of 0.1 m height above a ground reference plane. All cables exiting the EUT are supported at a height of at least 30 mm above the ground reference plane. The interference is injected with a CDN 801A. The cable is decoupled by an attenuation clamp 801A. The frequency range is swept from 150 kHz to 80 MHz, 10 V/m with the disturbance signal 80% amplitude modulated with a 1 kHz sine wave. The step size is 1% of the start and thereafter 1% of the preceding frequency value where the frequency is swept incrementally. The dwell time of the amplitude modulated carrier at each frequency is 1 second.

Sheild

DMM

Ethernet

PC_1

Data Logging SW

Decoupling Network Device

PC_2

AD5758 System EMC Software

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Battery-PoweredBattery-Powered• Real-time, independent, accurate measurement of V/I out

• Real-time monitoring status & error register• Coarse measurement of V/I out from on-chip ADC

Vout: 1K Ω IOUT: 500 Ω

LOA

D

OPTICAL FIBERs

DC SUPPLY 2

AD5753 MCU

iCou

pler

UA

RT

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Tr

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DC SUPPLY 1

24Vsys

24Vfield

DGNDDGNDAGNDAGND

PGND1

PGND3

TWISTED SHIELDED PAIR

TEST WAVEFORM GENERATOR

CDN 801A

Attenuation Clamp KEMA 801A

AGND

AD5758 EMC REFERENCE DESIGN

Figure 1. Block Diagram of IEC 61000-4-6 Test Setup

Figure 2. Photo of IEC 61000-4-6 Test Setup

Figure 3. Test result curve “Frequency vs Test level” -- Current output

Figure 4. Test result curve “Frequency vs Test level” -- Voltage output

Table 1. Table of test levels and results

Output Mode Before Zap During Zap Max

During Zap Min Deviation Pass or Fail

VOUT= 10V 10.00651 10.00672 10.00623 -0.003%, +0.002% Pass, class A

IOUT = 20mA 19.96972 19.97080 19.96909 -0.003%, +0.005% Pass, Class A

Immunity to ESDAs per IEC 61000-4-2 for Industrial.The test setup consists of a non-conductive table, 0.8 m high, standing on the ground reference plane. A horizontal coupling plane (HCP), 1.6 m × 0.8 m is placed on the table. The EUT and its cable are isolated from the coupling plane by an insulating mat 0.5 mm in thickness.The contact discharges are applied to the VIOUT and RETURN screws of AD5758 output terminal block. The EUT shall be exposed to at least 20 discharges at each rating, 10 each at negative and positive polarity. The discharges are repeated at 1 per second.The air discharges are applied to the AD5758 output terminal block. 20 discharges at each rating, 10 each at negative and positive polarity. The discharges are repeated at 1 per second.The coupling discharge are applied to the horizontal and vertical coupling planes. The EUT shall be exposed to at least 20 discharges at each rating, 10 each at negative and positive polarity. The discharges are repeated at 1 per second. The coupling plane has 2 x 470 KΩ bleeding resistors to the earth ground.

Sheild

PC_2


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DC SUPPLY 2




LOA

D

AD5758 MCUiC

oupl

er

UA

RT

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DC SUPPLY 1

24Vsys

24Vfield

DGNDDGNDAGNDAGND

DGND

PGND3AD5758 EMC REFERENCE DESIGN

OPTICAL FIBERs

470KΩ 470KΩ

GRP

AGND

EARTH

PC_1

Data Logging SW

• Real-time, independent, accurate measurement of V/I out

LOA

D

GRP

DMM

USB


GRP

Figure 5. Block Diagram of IEC 61000-4-2 Test Setup, Contact Discharge or Air Discharge

Sheild

PC_2


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DC SUPPLY 2




LOA

D

AD5758 MCU

iCou

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UA

RT

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DC SUPPLY 1

24Vsys

24Vfield

DGNDDGNDAGNDAGND

DGND


OPTICAL FIBERs

470KΩ

470KΩ

AGND

EARTH

PC_1

Data Logging SW

LOA

D

GRP

DMM

USB


GRP

470KΩ 470KΩ

EARTH GRP

HORIZONTAL COUPLING PLANE

VERTICAL COUPLING PLANE

Figure 6. Block Diagram of IEC 61000-4-2 Test Setup, Coupling Discharge


Table 2. Test levels and resultsTest Level

Output mode Zap point Before

ZapAfter Zap

Deviation

Pass or Fail

+12KV Air

Discharge

VOUT = 10V VIOUT Terminal Block 10.00144

10.00144 1ppm Pass, Class

BIOUT = 20mA VIOUT Terminal Block 19.9563

419.9562

4 5ppm Pass, Class B

-12KV Air Discharg

e

VOUT = 10V VIOUT Terminal Block 10.00140


BIOUT = 20mA VIOUT Terminal Block 19.9562

119.9561


+6KV Contact Discharg

e

VOUT = 10V VIOUT Terminal Screw

10.00122


BVOUT = 10V RETURN Terminal

Screw10.0011

510.0012


IOUT = 20mA

VIOUT Terminal Screw

19.95661


BIOUT = 20mA

RETURN Terminal Screw

19.95642


B

-6KV Contact Discharg

e

VOUT = 10V VIOUT Terminal Screw

10.00082


BVOUT = 10V RETURN Terminal

Screw10.0008

710.0013


IOUT = 20mA

VIOUT Terminal Screw

19.95652


BIOUT = 20mA

RETURN Terminal Screw

19.95656


B+30 KV

Coupling Discharg

e

VOUT = 10V Horizontal 9.96357 9.96356 1ppm Pass, Class B

VOUT = 10V Vertical 9.96375 9.96360 15ppm Pass, Class B

IOUT = 20mA

Horizontal 19.81324

19.81291

17ppm Pass, Class B

IOUT = 20mA Vertical 19.8566

019.8562


-30 KV Coupling Discharg

e

VOUT = 10V Horizontal 9.96353 9.96359 6ppm Pass, Class B

VOUT = 10V Vertical 9.96367 9.96366 1ppm Pass, Class B

IOUT = 20mA Horizontal 19.8132

419.8132


IOUT = 20mA Vertical 19.8566

619.8565


Immunity to Electrical fast transientsAs per IEC 61000-4-4 for Industrial, the EUT was tested with 2000 V and 4000 V discharges on the analog output cable. Both positive and negative polarity discharges were applied. The length of the ‘hot wire’ from the coaxial output of the EFT generator to the terminals on the EUT should not exceed 1 metre. The duration time of each test sequential was 1 minute. The transient/burst waveform was in accordance with IEC 61000-4-4, 5/50ns.The configuration consisted of a wooden table (0.8m high) covered with a sheet of copper (at least 0.25mm thick) connected to the protective grounding system. The EUT was placed on a 0.1m thick isolating support. A minimum distance of 0.5m was provided between the EUT and the walls of the laboratory.

Table 3. Test instruments:Description Model No. Serial No. Calibrated UntilEFT Generator TESEQ NSG 3040 2178 14/03/2018Capacitive Coupling Clamp

TESEQ CDN 3825 1743 28/02/2018

LOA

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Sheild

COUPLING CLAMPCABLE

TEST WAVEFORM GENERATOR

DMM

I

Lo

Ethernet

PC_1

Data Logging SW

Decoupling Network

PC_2


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Battery-PoweredBattery-Powered• Real-time, independent, accurate measurement of V/I out



OPTICAL FIBERs

DC SUPPLY 2

AD5758 MCU

iCou

pler

UA

RT

Opt

ical

Tr

ansc

eive

r

DC SUPPLY 1

24Vsys

24Vfield

DGNDDGNDAGNDAGND

DGND


AGND


Figure 9. Photo of IEC 610004-4 Test Setup

Table 4. Test levels and results.Test Level Output mode Before Zap After Zap Deviation Pass or Fail

+2KV VOUT = 10V 9.96465 9.96466 1ppm Pass, Class BIOUT = 20mA 19.82537 19.82536 1ppm Pass, Class B

-2KV VOUT = 10V 9.96458 9.96464 6ppm Pass, Class BIOUT = 20mA 19.82541 19.82541 1ppm Pass, Class B



Immunity to SurgeAs per IEC 61000-4-5 for Industrial, the surge is combination wave of 1.2 / 50 µS open circuit Voltage, 8/20 µS short circuit current. The EUT is subject to 5 positive and 5 negative surges at each rating. The interval between each surge is 1 minute. The surge is tested to the AD5758 output cable, which is treated as unshielded asymmetrically operated interconnection lines of EUT. The surge is applied to the lines via the capacitive coupling. The coupling / decoupling networks shall not influence the specified functional conditions of the EUT. The interconnection line between the EUT and the coupling / decoupling networks shall be 2 metre in length (or shorter).


Table 5. Table of test levels and results.Test Level Output mode Before Zap After Zap Deviation Pass or Fail





Radiated ImmunityAs per IEC 61000-4-3 for industrial, the test was performed in a fully-anechoic chamber. The EUT was placed on a non-conductive table 0.8 metre in height. A DMM as auxiliary equipment put in a shielded box under the table probes the AD5758 output at the load resistor. The DMM measurement data are sent to the PC outside the chamber via an Ethernet cable. The transmit antenna was located at a distance of 3 metres from the EUT. The frequency range is swept from 80 MHz to 1000 MHz, and from 1000 MHz to 6000 MHz with the signal 80% amplitude modulated with a 1 KHz sinewave. The frequency range is swept incrementally, the step size was 1% of preceding frequency value. The dwell time at each frequency was 1 second that shall be not less than the time necessary for the EUT to be able to respond. The field strength was 20 V/m on the range 80 MHz to 1000 MHz. The field strength from 1000 MHz to 6000 MHz was 10 V/m. The test was performed with the EUT exposed to both vertically and horizontally polarized field.

RF Amplifier

RF Generator and Control System

EUT

PC + Monitoring Software

3 meter measurement distance in a full anechoic chamber

AUX. EQUIPMENT

Shield Box



Figure 13. Test result curve “Frequency vs Test level”: 80MHz to 1000MHz, Vertical antenna, Current output = 20mA

Figure 14. Test result curve “Frequency vs Test level”: 80MHz to 1000MHz, Horizontal antenna, Current output = 20mA

Figure 15. Test result curve “Frequency vs Test level”: 1000MHz to 6000MHz, Vertical antenna, Current output = 20mA

Figure 16. Test result curve “Frequency vs Test level”: 1000MHz to 6000MHz, Horizontal antenna, Current output = 20mA

Figure 17. Test result curve “Frequency vs Test level”: 80MHz to 1000MHz, Vertical antenna, Voltage output = 10V

Figure 18. Test result curve “Frequency vs Test level”: 80MHz to 1000MHz, Horizontal antenna, Voltage output = 10V

Figure 19. Test result curve “Frequency vs Test level”: 1000MHz to 6000MHz, Vertical antenna, Voltage output = 10V

Figure 20. Test result curve “Frequency vs Test level”: 1000MHz to 6000MHz, Horizontal antenna, Voltage output = 10V

Table 6. Table of test levels and results.Frequen

cy Range

Output Mode

Before Zap

During Zap Max

During Zap min

Deviation Pass or Fail

Antenna Polarizati

on

80MHz ~ 1000MHz

VOUT = 10V

9.96732

9.96819

9.96419

-0.03%, 0.01%

Pass, Class A Horizontal

VOUT = 10V

9.96727

9.96816

9.96593

-0.01%, 0.01%

Pass, Class A Vertical

IOUT = 20mA

19.86957

19.88123

19.87385

-0.03%, 0.01%


IOUT = 20mA

19.87998

19.88196

19.87779

-0.01%, 0.01%


1000MHz ~ 6000MHz

VOUT = 10V

9.96734

9.96822

9.96607

-0.01%, 0.01%


VOUT = 10V

9.96749

9.96830

9.96620

-0.01%, 0.01%


IOUT = 20mA

19.87942

19.88107

19.87757

-0.01%, 0.01%


IOUT = 20mA

19.87926

19.88087

19.87730

-0.01%, 0.01%


Radiated EmissionsAs per CISPR 11 for Industrial, the EUT was placed on the top of a rotating table 0.8 metre above the ground at a 10 metre semi-anechoic chamber. The table was rotated 360° to identify the position of the highest radiation. The EUT was set 10 metres away from the two interference-receiving antennas, in which one is horizontal polarization and the other is vertical polarization. The antennas were mounted on the top of a variable-height antenna tower. The heights of the antennas are varied from 1 metre to 4 metres above the ground to identify the maximum value of the field strength. The EUT was configured to its worst case and the antenna was tuned to height from 1 metre to 4 metres and the table was turned from 0 to 360 degrees to find the maximum reading. The test receiver system was set to quasi-peak detection mode. The EUT was powered by two 24 VDC battery packs thus any radiated emission from the auxiliary power supply can be excluded.

Figure 21. Photo of CISPR 11 Test Setup

Emission measurement curve “Frequency vs measured levels along with tested limits”

Figure 22. Current output = 20mA, Vertical antenna polarization

Figure 23. Current output = 20mA, Horizontal antenna polarization

Figure 24. Voltage output = 10V, Vertical antenna polarization

Figure 25. Voltage output = 10V, Horizontal antenna polarization

Table 7. AD5758 Current Output = 20mA, Vertical antenna polarization at critical frequencies

Frequency Result Limit Margin Height Degree Remark(MHz) (dBµV) (dBµV) (dB) (cm) (deg)32.51 19.27 40 -20.73 200 245 QP32.91 24.65 40 -15.35 200 38 Peak83.35 18.74 40 -21.26 100 260 Peak143.49 18.66 40 -21.34 300 360 Peak203.63 22.86 40 17.14 400 354 Peak755.56 30.32 47 -6.68 200 341 Peak879.17 27.55 47 -19.45 400 226 QP879.72 31.81 47 -15.19 400 156 Peak

Table 8. AD5758 Current Output = 20mA, Horizontal antenna polarization at critical frequencies

Frequency Result Limit Margin Height Degree Remark(MHz) (dBµV) (dBµV) (dB) (cm) (deg)31.94 23.28 40 -16.72 300 196 Peak83.35 19.68 40 -20.32 400 302 Peak191.02 25.67 40 -14.33 300 181 Peak191.17 23.67 40 -16.33 300 98 QP202.66 29.93 40 -10.07 400 164 Peak

202.70 28.10 40 -11.90 400 164 QP448.07 31.48 47 -15.52 200 157 Peak448.24 31.25 47 -15.75 200 117 QP698.33 31.54 47 -15.46 100 48 Peak

Table 9. AD5758 Voltage Output = 10V, Vertical antenna polarization at critical frequencies

Frequency Result Limit Margin Height Degree Remark(MHz) (dBµV) (dBµV) (dB) (cm) (deg)30.00 24.50 40 -15.50 100 251 Peak143.49 20.68 40 -19.32 200 325 Peak204.60 23.73 40 -16.27 400 360 Peak444.19 28.25 47 -18.75 100 337 Peak830.25 31.23 47 -15.77 300 50 Peak830.25 24.99 47 -22.01 300 0 QP960.23 32.47 47 -14.53 300 42 Peak960.23 26.90 47 -20.10 300 360 QP

Table 10. AD5758 Voltage Output = 10V, Horizontal antenna polarization at critical frequencies

Frequency Result Limit Margin Height Degree Remark(MHz) (dBµV) (dBµV) (dB) (cm) (deg)30.00 27.80 40 -12.20 300 164 Peak30.95 23.45 40 -16.55 300 126 QP83.35 24.32 40 -15.68 400 322 Peak204.60 33.41 40 -6.59 400 168 Peak204.80 28.74 40 -11.26 400 212 QP448.07 35.82 47 -11.18 200 360 Peak448.21 33.65 47 -13.35 200 116 QP691.29 27.86 47 -19.14 100 303 QP691.54 36.75 47 -10.25 100 259 Peak723.15 24.35 47 -22.65 100 0 QP723.55 37.55 47 -9.45 100 140 Peak

Date post:	14-Jul-2021
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CN0423 EMC/EMI Measurement Results · Web viewAs per IEC 61000-4-3 for industrial, the test was...

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