CDN – Coupling / Decoupling Networks

The Coupling- / Decoupling Networks are used to inject common mode disturbances to Equipment under Test (EuT). Further the CDNs provide sufficient decoupling between Auxiliary Equipment (AE) and disturbance signal. The requirements for CDN and their application are described in the standard IEC 61000-4-6 (Immunity to conducted disturbances, induced by radio-frequency fields). CDNs have a common mode impedance of 150 Ohm and are available for a multitude of cable types and connectors.

Schwarzbeck CDN – Overview

CDN M-type – Mains / Power supply applications

Product	Drawing		Frequency range	EUT/AE connector type	Max. Current rating	Input Voltage EUT	Case size
Product	AE Port	EUT Port	Frequency range	EUT/AE connector type	Max. Current rating	Input Voltage EUT	Case size
CDN M1 16A 1000V			0.15…230 MHz	4 mm safety banana sockets	16 A	500 VAC 1000 VDC	A
CDN M2 16A 1000V			0.15…230 MHz	4 mm safety banana sockets	16A	500 VAC 1000 VDC	A
CDN M2 32A 1000V			0.15…230 MHz	4 mm safety banana sockets	32 A	500 VAC 1000 VDC	B
CDN M2 63A 1000V			0.15…230 MHz	Multi-Contact KBT6AR-N/…-S	63 A	500 VAC 1000 VDC	C
CDN M2 125A 1000V			0.15…230 MHz	Multi-Contact KBT6AR-N/25-S-L	125 A	500 VAC 1000 VDC	C
CDN M2/M3PE 16A			0.15…230 MHz	4 mm safety banana sockets	16 A	250 VAC 400 VDC	A
CDN M3PE 16A 1000V			0.15…230 MHz	4 mm safety banana sockets	16 A	250 VAC 400 VDC	A
CDN M3 32A 1000V			0.15…230 MHz	4 mm safety banana sockets	32 A	500 VAC 1000 VDC	A
CDN M3PE 32A 1000V			0.15…230 MHz	4 mm safety banana sockets	32 A	500 VAC 1000 VDC	A
CDN M3PE 125A 1000V			0.15…230 MHz	Multi-Contact KBT6AR-N/25-S-L	125 A	500 VAC 1000 VDC
CDN M4 16A 1000V			0.15…230 MHz	4 mm safety banana sockets	16 A	500 VAC 1000 VDC	A
CDN M4PE 16A 1000V			0.15…230 MHz	4 mm safety banana sockets	16 A	500 VAC 1000 VDC	A
CDN M4 32A 1000V			0.15…230 MHz	4 mm safety banana sockets	32 A	500 VAC 1000 VDC	A
CDN M4PE 32A 1000V			0.15…230 MHz	4 mm safety banana sockets	32 A	500 VAC 1000 VDC	A
CDN M4 63A 1000V			0.15…230 MHz	Multi-Contact KBT6AR-N/…-S	63 A	500 VAC 1000 VDC	C
CDN M4PE 125A 1000V			0.15…230 MHz	Multi-Contact KBT6AR-N/…-S	125 A	500 VAC 1000 VDC	C
CDN M5PE 16A 1000V			0.15…230 MHz	4 mm safety banana sockets	16 A	500 VAC 1000 VDC	A
CDN M5PE 32A 1000V			0.15…230 MHz	4 mm safety banana sockets	32 A	500 VAC 1000 VDC	A
CDN M5PE 63A 1000V			0.15…230 MHz	Multi-Contact KBT6AR-N/…-S	63 A	500 VAC 1000 VDC	C
CDN M5PE 125A 1000V			0.15…80 MHz	Multi-Contact KBT6AR-N/…-S	125 A	500 VAC 1000 VDC	C

CDN AF-type – Unscreened unbalanced lines

Product	Drawing		Frequency range	EUT/AE connector type	Max. Current rating	Input Voltage EUT	Case size
Product	AE Port	EUT Port	Frequency range	EUT/AE connector type	Max. Current rating	Input Voltage EUT	Case size
CDN AF2			0.15…230 MHz	4 mm safety banana sockets	4 A (DC)	100 VAC 150 VDC	A
CDN AF3			0.15…230 MHz	4 mm safety banana sockets	4 A (DC)	100 VAC 150 VDC	A
CDN AF4			0.15…230 MHz	4 mm safety banana sockets	4 A (DC)	100 VAC 150 VDC	A
CDN AF6			0.15…230 MHz	4 mm safety banana sockets	4 A (DC)	100 VAC 150 VDC	A
CDN AF8			0.15…230 MHz	4 mm safety banana sockets	4 A (DC)	100 VAC 150 VDC	A

CDN S-type – Screened cables

Product	Drawing		Frequency range	EUT/AE connector type	Max. Current rating	Input Voltage EUT	Case size
Product	AE Port	EUT Port	Frequency range	EUT/AE connector type	Max. Current rating	Input Voltage EUT	Case size
CDN S1 BNC			0.01…230 MHz	1x BNC 50 Ω			A
CDN S1 BNC 75			0.01…230 MHz	1x BNC 75 Ω			A
CDN S2 XLR3-1			0.01…230 MHz	XLR3-1 GND:PIN1			A
CDN S2 XLR3-3			0.01…230 MHz	XLR3-3 GND:PIN3			A
CDN S4 4xBNC			0.01…230 MHz	4x BNC 50 Ω			A
CDN S4 XLR4			0.01…230 MHz	XLR4 female			A
CDN S4 DIN5-1			0.01…230 MHz	DIN5 GND:PIN1			A
CDN S8 RJ45			0.01…230 MHz	RJ45			A
CDN S9 SUBD			0.01…230 MHz	Sub-D 9 pol.			A
CDN S9 USB3.0			0.15…230 MHz	USB 3.0			A
CDN S15 VGA			0.01…230 MHz	VGA			A
CDN S19 HDMI			0.01…230 MHz	HDMI			A
CDN S24 USB-C			0.15…230 MHz	USB-C			A
CDN S25 SUBD			0.15…230 MHz	Sub-D 25 pol.			A

CDN T-type – Unscreened balanced lines

Product	Drawing		Frequency range	EUT/AE connector type	Max. Current rating	Input Voltage EUT	Case size
Product	AE Port	EUT Port	Frequency range	EUT/AE connector type	Max. Current rating	Input Voltage EUT	Case size
CDN T2			0.01…230 MHz	4 mm safety banana sockets	0.25 A		A
CDN T2 16A			0.01…230 MHz	4 mm safety banana sockets	16 A		A
CDN T4			0.01…230 MHz	4 mm safety banana sockets	0.25 A		A
CDN T4 4A			0.01…230 MHz	4 mm safety banana sockets	4 A		A
CDN T4 RJ45			0.01…230 MHz	RJ 45	0.25 A		A
CDN T8 RJ45			0.15…230 MHz	RJ 45	0.25 A		A

CDN Case Size

CDN dimensions	Length L1	Lenght L2	Width W	Height H
Case A	225 mm	216 mm	105 mm	108 mm
Case B	305 mm	266 mm	105 mm	107 mm
Case C	290 mm	251 mm	165 mm	167 mm
Case D	–	107 mm	105 mm	48 mm

A-Type CDN for coaxial antenna inputs

The CNA280 meets the specifications of the standard CISPR 16-1-2 A1, figure C1 (unit type A) and CISPR 16-1-3, app. B,Fig. 9.
It is also required to calibrate EMI absorbing clamps like the MDS 21.

Datasheet

CDN – Coupling / Decoupling Networks