CDN ISN S1 BNC, Coupling Decoupling Network
- Conducted common mode immunity testing according to IEC 61000-4-6
- Complies with CISPR 16-1-2
- can be used for both emission and immunity testing
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Data Sheet
SPECIFICATIONS
CDN ISN S1 BNC, Coupling Decoupling NetworkThe CDN ISN S1 BNC is a CDN for conducted common mode immunity testing according to IEC 61000-4-6. Additionally it complies to the ISN specifications as given in CISPR 16-1-2. The CDN ISN S1 BNC can be used for both emission and immunity testing. The CDN ISN S1 BNC is intended for measurements on devices with a 50 ohm coaxial interface in the frequency range from 10 kHz to 230 MHz. The circuitry is shown in Fig. 4. As this device meets the specifications for both CDNs and ISNs, it can be used for emission and immunity applications. They will be adressed seperately. Use as a CDN The CDN complies with the requirements of IEC 61000-4-6, IEC 61326 and NAMUR NE21. Each CDN comes with individually measured data and a calibration certificate for the common mode impedance and the voltage division factor. It can be used from 9 kHz to 230 MHz, but the standards call for use from 10 or 150 kHz only. A variety of calibration adapters and other accessories are available options. With the one included adapter, SA BNC, in conjunction with the optional series resistor SR100-6W, the required spacing of 30 mm is obtained as depicted in Fig. 9 of IEC 61000-4-6. The connection to ground can be accomplished using the ground plane of the CDN. Additionally there is a M4 thread located at the AE side to ground as well as a 4 mm socket to connect the device to ground. Use as an ISN CISPR32 / EN55032 describes the use as an ISN in the frequency range 9 kHz to 30 MHz. In this case the RF port is connected to the test receiver. The internal series resistor causes a voltage division factor of approx. 10dB; For precise measurements the actual VDF needs to be taken from the calibration certificate.
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