The CDN 418AFL8 unshielded asymmetric coupling/decoupling network is designed for damped oscillatory wave test on low speed communication line (up to 5MBit/s Ethernet speed). There is no need to extra protect AE because of high decoupling capacity of CDN 418AFL8 to make sure test repeatability. Max. residual voltage on AE port is only 90V when the surge voltage is 2kV. It fully meets the requirements of IEC/EN 61000 – 4-18. It also boasts stable decoupling capacity and transmission rate, easy to operate and compact size.
Features：
> Test output to 4-path 8-line communication line;
> Max. withstanding voltage up to 6 kV (customized);
> Compatible with the output port of other company’s generators for communication test;
> The coupling module can be replaced according to the test needs
Test Connection Illustration 1（line-to-line）：
Test Connection Illustration 2（line-to-PE）：
Design Schematic Circuit:
As per IEC 61000-4-18：2006 Figure 12a
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Technical parameters |
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Standard |
IEC/EN 61000 -4 -18 |
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Coupling Waveform |
Damped oscillation wave 100KHz/1MHz |
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Pulse Voltage |
4 kV (6 kV can be customized) |
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Coupling Mode |
Line to line/Line to ground |
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Coupling Components |
External replaceable module (GDT/ Capacitor /TVS) |
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Communication Frequency |
<5 MHz |
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Communication Port |
4mm Banana Head (EUT)/RJ45 Female Connector (AE) |
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Pin Assignment |
Pair 1: pins 1/2 |
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Pair 2: pins 3/4 |
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Pair 3: pins 5/6 |
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Pair 4: pins 7/8 |
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Transmission Rate |
Up to 5 MBit/s |
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Working Voltage |
Max. 12 V DC |
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Working Current |
Max. 1 A |
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Decoupling Inductance |
20 mH |
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Residual Voltage |
90 V |
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General Parameters |
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Weight |
Approx. 10 kg |
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Dimension |
360 mm (L)× 220 mm (W)×135 (H) mm |
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Enclosure Material |
Aluminum |
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Ambient Temperature |
15 °C ~ 35 °C (operating condition) |
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Relative Humidity |
45% ~ 75% (operating condition) |
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Package Case |
Carton |
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Accessories |
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HV Cable |
1 m HV silicon cable with banana plug |
1 |
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Ground cable |
0.5 m yellow green cable |
1 |
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Short -Circuit Cable |
black |
1 |
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SCD 90 |
Coupling module (built-in) |
2 |
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Internet cable |
1 m |
2 |
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Documents |
Factory test report |
1 |
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User manual |
1 |
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Options |
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SZC 33 |
Coupled module 33 nF |
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SZG 90 |
Coupled module 90V GDT |
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SZT 30 |
Coupled module 30V TVS |
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