Com-Power CDN M-Series CDN for conducted EMI / EMC immunity testing
Coupling / Decoupling Networks (CDN)
Coupling / Decoupling Networks (CDN) are for
testing from 150 kHz - 80 MHz according to the EN 61000-4-6 standard for
immunity to conducted disturbance induced by radio frequency fields. As the
name implies the CDNs has both coupling and decoupling networks. The
coupling network delivers injected RF common mode current disturbance
signals through the various conductors to the equipment under test (EUT).
The decoupling networks are used insure that the disturbing signals injected
on the signal or power line of the EUT by the coupling networks does not
interfere with any the auxiliary equipment (AE) connected to the EUT. Each
CDN contains integrated direct capacitive coupling along with the high
impedance choke for inductive decoupling.
The disturbing signal can be injected on
signal lines and power line of an EUT by using the appropriate CDN described
below. The CDN setup must be calibrated to establish the drive table. Please
use the appropriate calibration components for the CDN. For each CDN you
will need:
M series for powerline conductors
The M series CDNs are for injecting common mode
current disturbance on to the powerline conductor of the equipment
under test. The CDN to be used is determined by the number of wires in
the conductor. The standard M series CDNs have a current rating of 25
Amps.
| Model |
#
wires in the power cord |
Coupling
Point |
Application |
| CDN-M125 |
1 |
Each
Wire |
Single Line |
| CDN-M225 |
2 |
Each
Wire |
Single
Phase + Neutral |
| CDN-M325 |
3 |
Each
Wire |
Single
Phase + Neutral + Earth |
| CDN-M425 |
4 |
Each
Wire |
Three
Phase + Earth |
| CDN-M525 |
5 |
Each
Wire |
Three
Phase + Neutral + Earth |
|
