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Related Manuals for Com-Power CDN-AF4
Summary of Contents for Com-Power CDN-AF4
- Page 1 COUPLING DECOUPLING NETWORK MODEL CDN-AF4 Model CDN -AF4...
- Page 2 United States without the prior knowlege of Com-Power. In addition, Com-Power shall not be obliged to provide service under this warranty to repair damage resulting from attempts to install, repair, service or modify the instrument by personnel other than Com-Power service representative.
- Page 3 This manual provides instructions on how to operate and maintain Model CDN-AF4 coupling decoupling network. Information contained in this manual is property of Com-Power Corporation. It is issued with understanding that none of this material may be reproduced of copied without permission from Com-Power.
- Page 4 Operating Enviroment The instrument has been designed for indoor use only. It should not be used in damp or wet enviorment. The permissible ambient temperature range during operation is +10°C (+50°F) to +40°C (+104°F). Please read the safety section. Maintenance There are no user serviceable parts inside these units.
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Page 5: Table Of Contents
3.0 Overview ..................3-1 3.1 Typical test setup ................3-1 List of Figures Figures ..................page 1-1 CDN-AF4 Photo ................1-2 1-2 Typical terminal impedance ............1-3 1-3 Typical coupling factor ..............1-4 1-4 Typical attenuation factor ............... 1-5 3-1 Conducted immunity setup ............3-1 List of Tables Tables .................... -
Page 6: General Information
(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. The CDN-AF4 couples common mode CW and modulated signals on to a unshielded 4 conductor cable. - Page 7 Note: The shield is not connected to ground. RF (Disturbance coupling) connector: BNC (f) 50 Ohm Dimensions ( L x W X H): 12” x 6” x 6" inches Weight : 4 lb. Figure 1-1 Model CDN-AF4 Model CDN -AF4...
- Page 8 Model CDN -AF4...
- Page 9 Model CDN -AF4...
- Page 10 Model CDN -AF4...
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Page 11: Cdn Requirement
This CDN was built to meet the requirments of IEC-1000-4-6. This CDN-AF4 can be used to verify that electronic equipment are not susceptible to sources electromagnetic disturbance which may couple to shield of signal cables. -
Page 12: Important Cdn Parameters
1000-4-6 specification does not specify the attenuation factor, however it benificial to keep it low as possible. The attenuation factor for the Com-Power CDN is approximately 10 dB for the frequency range of 150 kHz - 80 MHz. The attenuation is useful factor for predicting the amount of input power required to generate required immunity voltage. - Page 13 The Com-Power CDN coupling factor is almost 0 dB for the entire frequency of 150 kHz - 80 MHz. Measuring these factors on site Typically, the common mode terminal impedence, attenuation and coupling factors are measured at the factory and supplied with each unit.
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Page 14: Establishing Drive Table
4.0 Establishing a drive table Before you begin you will need to test your setup to establish the correct immunity levels. The setup is similar to the attenuation measurment setup except connect the power amplifier to the CDN input (please see figure 2-5). The 1EC- 1000-4-6 call out testing to three different open circuit test levels. -
Page 15: Setting Levels
(This process can be automated with appropriate software, contact Com-Power for details.) The next step is to activate the 1 kHz sine wave modulator on your signal generator set it to 80% modulation depth and repeat measurements described in the previous paragraph . -
Page 16: Theory Of Operation
Theory of Operations This section includes the following Overview Typical Test Setup 3.0 Overview This describes the typical test setup for making measurements using the CDN. Please read safety precautions in this manual before proceeding. 3.1 Typical test setup The IEC-1000-4-6 requires that an appropriate coupling decoupling networks (CDN) with defined common mode impedance must be connected the various cables connected to the EUT.
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