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
Opt
ical
Tr
ansc
eive
r
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
Opt
ical
Tr
ansc
eive
r
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
AD5758 System EMC Software
Opt
ical
Tr
ansc
eive
r
DC SUPPLY 2
• Real-time monitoring status & error register• Coarse measurement of V/I out from on-chip ADC
TWISTED SHIELDED PAIR
Vout: 1K Ω IOUT: 500 Ω
LOA
D
AD5758 MCUiC
oupl
er
UA
RT
Opt
ical
Tr
ansc
eive
r
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
Decoupling Network Device
GRP
Figure 5. Block Diagram of IEC 61000-4-2 Test Setup, Contact Discharge or Air Discharge
Sheild
PC_2
AD5758 System EMC Software
Opt
ical
Tr
ansc
eive
r
DC SUPPLY 2
• Real-time monitoring status & error register• Coarse measurement of V/I out from on-chip ADC
TWISTED SHIELDED PAIR
Vout: 1K Ω IOUT: 500 Ω
LOA
D
AD5758 MCU
iCou
pler
UA
RT
Opt
ical
Tr
ansc
eive
r
DC SUPPLY 1
24Vsys
24Vfield
DGNDDGNDAGNDAGND
DGND
PGND3AD5758 EMC REFERENCE DESIGN
OPTICAL FIBERs
470KΩ
470KΩ
AGND
EARTH
PC_1
Data Logging SW
LOA
D
GRP
DMM
USB
Decoupling Network Device
GRP
470KΩ 470KΩ
EARTH GRP
HORIZONTAL COUPLING PLANE
VERTICAL COUPLING PLANE
Figure 6. Block Diagram of IEC 61000-4-2 Test Setup, Coupling Discharge
Figure 7. Photo of IEC 61000-4-2 Test Setup
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
10.00150 10ppm Pass, Class
BIOUT = 20mA VIOUT Terminal Block 19.9562
119.9561
3 4ppm Pass, Class B
+6KV Contact Discharg
e
VOUT = 10V VIOUT Terminal Screw
10.00122
10.00129 8ppm Pass, Class
BVOUT = 10V RETURN Terminal
Screw10.0011
510.0012
4 9ppm Pass, Class B
IOUT = 20mA
VIOUT Terminal Screw
19.95661
19.95716 28ppm Pass, Class
BIOUT = 20mA
RETURN Terminal Screw
19.95642
19.95704 31ppm Pass, Class
B
-6KV Contact Discharg
e
VOUT = 10V VIOUT Terminal Screw
10.00082
10.00136 54ppm Pass, Class
BVOUT = 10V RETURN Terminal
Screw10.0008
710.0013
7 50ppm Pass, Class B
IOUT = 20mA
VIOUT Terminal Screw
19.95652
19.95778 63ppm Pass, Class
BIOUT = 20mA
RETURN Terminal Screw
19.95656
19.95787 66ppm Pass, Class
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
6 17ppm Pass, Class B
-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
9 2ppm Pass, Class B
IOUT = 20mA Vertical 19.8566
619.8565
5 6ppm Pass, Class B
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
D
Sheild
COUPLING CLAMPCABLE
TEST WAVEFORM GENERATOR
DMM
I
Lo
Ethernet
PC_1
Data Logging SW
Decoupling Network
PC_2
AD5758 System EMC Software
Opt
ical
Tr
ansc
eive
r
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
OPTICAL FIBERs
DC SUPPLY 2
AD5758 MCU
iCou
pler
UA
RT
Opt
ical
Tr
ansc
eive
r
DC SUPPLY 1
24Vsys
24Vfield
DGNDDGNDAGNDAGND
DGND
PGND3AD5758 EMC REFERENCE DESIGN
AGND
Figure 8. Block Diagram of IEC 61000-4-4 Test Setup
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
+4KV VOUT = 10V 9.96465 9.96470 6ppm Pass, Class BIOUT = 20mA 19.82544 19.82549 3ppm Pass, Class B
-4KV VOUT = 10V 9.96463 9.96472 9ppm Pass, Class BIOUT = 20mA 19.82540 19.82540 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).
Figure 10. Photo of IEC 61000-4-5 Test Setup
Table 5. Table of test levels and results.Test Level Output mode Before Zap After Zap Deviation Pass or Fail
+2KV VOUT = 10V 9.96534 9.96541 7ppm Pass, Class BIOUT = 20mA 19.82546 19.82544 1ppm Pass, Class B
-2KV VOUT = 10V 9.96542 9.96546 4ppm Pass, Class BIOUT = 20mA 19.82549 19.82545 2ppm Pass, Class B
+4KV VOUT = 10V 9.96542 9.96548 6ppm Pass, Class BIOUT = 20mA 19.82556 19.82551 2ppm Pass, Class B
-4KV VOUT = 10V 9.96543 9.96549 6ppm Pass, Class BIOUT = 20mA 19.82549 19.82553 2ppm Pass, Class B
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 11. Block Diagram of IEC 61000-4-3 Test Setup
Figure 12. Photo of IEC 61000-4-3 Test Setup
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%
Pass, Class A Horizontal
IOUT = 20mA
19.87998
19.88196
19.87779
-0.01%, 0.01%
Pass, Class A Vertical
1000MHz ~ 6000MHz
VOUT = 10V
9.96734
9.96822
9.96607
-0.01%, 0.01%
Pass, Class A Horizontal
VOUT = 10V
9.96749
9.96830
9.96620
-0.01%, 0.01%
Pass, Class A Vertical
IOUT = 20mA
19.87942
19.88107
19.87757
-0.01%, 0.01%
Pass, Class A Horizontal
IOUT = 20mA
19.87926
19.88087
19.87730
-0.01%, 0.01%
Pass, Class A Vertical
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