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Com-Power CDN-AF4, Manual

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Model  CDN -AF4

 COUPLING DECOUPLING

NETWORK

MODEL CDN-AF4

Summary of Contents for CDN-AF4

Page 1: ...Model CDN AF4 COUPLING DECOUPLING NETWORK MODEL CDN AF4...

Page 2: ...nnel other than Com Power service representative Under no circumstances does Com Power recognize or assume liability for any loss damage or expense arising either directly or indirectly from the use o...

Page 3: ...nductors to the mains should not be connected until all the connections to the EUT CDN auxilary equipement and test equipment are completed Test personnel should not touch any exposed test leads or te...

Page 4: ...ce There are no user serviceable parts inside these units If the unit does not operate or needs calibration please return it to the factory Do not open instrument cover Any modifications or repairs pe...

Page 5: ...meters 2 3 3 0 Calibration 2 3 4 0 Establishing drive table 2 4 4 1 Setting levels 2 5 3 Theory of Operation 3 1 3 0 Overview 3 1 3 1 Typical test setup 3 1 List of Figures Figures page 1 1 CDN AF4 Ph...

Page 6: ...CDN AF4 Coupling Decoupling networks CDN is intended for testing products according to EN61000 4 6 standard for immunity to conducted disturbance induced by radio frequency fields from 150 kHz 80 MHz...

Page 7: ...max Voltage attenuation RF EUT 9 dB to 12 dB Insertion loss EUT AE 30 dB min from 150 kHz to 2 MHz 50 dB min from 2 MHz to 80 MHz Coupling factor 0 dB 1 dB 2 dB Decoupling attenuation RF AE 50 dB min...

Page 8: ...Model CDN AF4 Figure 1 2 CDN Model CDN AF4 typical common mode impedance 1 3...

Page 9: ...Model CDN AF4 Figure 1 3 CDN Model CDN AF4 typical attenuation factor graph 1 4...

Page 10: ...Model CDN AF4 Figure 1 4 CDN Model CDN AF4 typical Coupling factor graph 1 5...

Page 11: ...ources electromagnetic disturbance which may couple to shield of signal cables 2 1 CDN requirements The CDN AF4 coupling and decoupling network Allows Coupling of the disturbing signals to the equipme...

Page 12: ...ort of the CDN are given in table 2 1 This ensures that any circuit level abnormal operation was caused by the injected RF signal on the EUT and not the auxillary equipment AE The requirement must be...

Page 13: ...easured at the factory and supplied with each unit However if you wish to check the attenuation and coupling factor on site you could purchase optional calibration kit which includes the shorting bars...

Page 14: ...modulated disturbing signal levels expressed in r m s Figure 2 5 Level measurement setup using CDN Table 2 2 Test Levels specified by IEC 1000 4 6 2 4 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 1...

Page 15: ...lue Next turn on the power amplifier and signal generator and take the measurements from 150 kHz 80 MHz for each level with CW unmodulated The rate of the sweep shall not exceed 1 5 x 103 decades seco...

Page 16: ...ded conductors Other types CDN may be necessary to couple and decouple different types of cables that may connected to the EUT Such as coax shielded cables and powerline Please see connection diagram...

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