Overview
The CDN M1 16A is a part of the coupling decoupling network series for conducted common mode immunity testing according to IEC 61000-4-6. The CDN M1 16A is compliant to IEC 61000-4-6 Annex D.2 and is suitable for immunity testing on unscreened a.c. and d.c. power supply lines (mains).
The CDN M1 16A is intended to inject common mode disturbance signals to power supply or mains lines (unscreened) in the frequency range from 150 kHz to 230 MHz. The circuitry is shown in fig. 5
All CDNs comply to the requirements of IEC 61000-4-. Each CDN comes with individually measured data and a calibration certificate for the common mode impedance and the voltage division factor. Further typical data can be found in fig. 3 and fig. 4.
A variety of calibration adapters and other accessories are available as option.
Important Note:
The conductor has no galvanic connection to the housing. Take care for a good ground connection of the housing before usage!
The capacitor at the AE-side is equipped with a 2 M? discharging resistor.
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.
To improve the operational safety the mains voltage-carrying connections are carried out as security sockets. We recommend to use special 4 mm security plugs if you plan to design your own adapters. Those connectors can be purchased optionally.
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| Fig. 1: typ. EuT common mode impedance | Fig. 2: typ. phase EuT-Port, common- mode |
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| Fig. 3: typical voltage division factor RF-port to EuT port | Fig. 4: typ. isolation AE to RF-port |
| Specifications | |
| Frequency range | 150 kHz … 230 MHz |
| Common mode impedance | 150 kHz – 24 MHz: 150 ? ±20 ? 24MHz–80MHz: 150 ? +60 ? / -45 ? 80 MHz – 230 MHz: 150 ? ±60 ? |
| Max. RF-test voltage (emf) | 30 V |
| RF-input-power | 6 W (continuous) |
| RF-input connector | 50 ? BNC (female) |
| Voltage division factor RF-input – EuT-port | 9.5 dB 150 kHz – 80 MHz: ±1 dB 80 MHz – 300 MHz: +3 dB / -2 dB |
| Input Voltage EuT (AE) | 250 VAC 400 VDC |
| Housing material | Aluminium |
| Housing dimensions | 216 x 105 x 108 mm |
| Weight | ca. 1400 g |
| EuT, AE connectors | 4 mm safety banana jacks |
| Included accessories | CA 1/4 |
| 3 Pin shorting bar | (1 unit included by default) |
| Optional accessories 30 mm distance adapter 50 ? to 150 ? adapter | SR 30/4 SR 100-6W |
