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Schloder CDN-EMCL-35 Current Injection Clamp for RF Conducted Immunity Testing View larger

Schloder CDN-EMCL-35 Current Injection Clamp for RF Conducted Immunity Testing


  • EM clamp for immunity testing of cables with up to 35 mm diameter
  • High coupling factor: less than 15 watts amplifier output power is required to obtain a test level of 10 V
  • Calibration unit and calibration data are supplied with each instrument

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Frequency Range 10 kHz to 1000 MHz
Standards Met IEC/EN 61000-4-6; CISPR 24; EN 61000-6-1; EN 61000-6-2; IEC 60533; IEC 60601-1-2; IEC 61326
Application/Test Type Injects the disturbance signal through a combination of inductive and capacitive coupling
Impedance 50 Ohms
Maximum Continuous Power 0.15 to 100 MHz: 100 W for 15 min; 100 to 230 MHz: 100 W for 5 min; 230 to 1000 MHz: 50 W for 3 min
Connector N-type female
Clamp factor (CF) -.6 dB at 100 kHz to -2.2 dB at 1 GHz (Min -4 dB at 700 MHz
Max. Cable Diameter 35 mm
Dimensions 666 mm x 135 mm x 120 mm
Weight approx. 14 kg

Test Equipment Description

Schloder CDN-EMCL-35 Description:

The preferred coupling and decoupling devices for IEC/EN 61000-4-6 RF conducted immunity testing are the CDNs, for reasons of test reproducibility and protection of the AE. However, if they are not suitable or available, clamp injection should be used.

Often, clamp injection needs to be applied to multi-pair balanced cables because suitable CDNs might not be available. The Schloder CDN-EMCL-35 current injection clamp establishes both capacitive and inductive coupling to the cable connected to the EUT.

The EM current clamp (in contrast to the conventional current injection clamp) has a directivity ≥ 10 dB, above 10 MHz, so that defined impedance between the common-mode point of the AE and the ground reference plane is no longer required. Above 10 MHz, the behaviour of the EM clamp is similar to that of a CDN.

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