Absorbing Clamps

MDS 21 B - EMI Absorbing Clamp

  • MDS21 open
  • MDS21


EMI Absorbing Clamp

30 - 1000 MHz

acc. CISPR 16 for interference power with silicon coated rolls

Also for shielding measurements on coax. cables


pdficon small Datasheet MDS21B


pdficon small Data



CMAD 1614 - Common Mode Absorption Device


  • CMAD1614
  • CMAD1614_

The CMAD 1614 - Common Mode Absorption Device consists of many precision cut ferrite half-toroids, which are embedded in a grey plastic housing. The unique floating toroid bearing ensures a perfect fit of the ferrite surfaces. Two quick-locks at the long side allow opening and closing of the clamp within seconds. Cable bundles or coaxial cables with a maximum diameter of 26 mm are accepted by the clamp without disassembling connectors or interrupting any circuitry. The combination of short length and large cable hole diameter offer a broad variety of applications for the CMAD 1614. Each common mode absorption device comes with an individually measured calibration certificate.


The CMAD 1614 can be used for both, coaxial cables and unshielded cable bundles, in order to suppress unwanted common mode currents (also called braid currents). Since these unwanted common mode currents are very often a reason for poor repeatability of measurements, the new CISPR 16-1-4 standard recommends the use of absorbing clamps.


Frequency Range: 30 MHz - 200 MHz
Specified in: CISPR 16-1-4
Usable Frequency Range: 10 MHz - 1 GHz
S11 (30 MHz): 0.6 - 0.75
S11 (200 MHz): 0.4 - 0.55
S21: < 0.25
Max. Cable Diameter: 26 mm
Housing Material: PVC
Housing Dimensions: 66 x 70 x 414 mm
Weight: 3.2 kg


pdficon small Datasheet CMAD 1614



CAL CMAD 1614 - Calibration Fixture for CMAD 1614



  • cal_cmad

The CAL CMAD 1614 calibration fixture is used to calibrate / verify the performance of the common mode absorption device CMAD 1614. The fixture consists of an aluminium base plate with two sideplates, adjustable in height and position and each of them equipped with N-connector and inner conductor fixture. A variety of inner conductors with 4 mm diameter is part of the delivery. The calibration fixture was designed for measurements acc. to CISPR 16-1-4 sections 9.5 and 9.6.


Frequency Range: 30 MHz - 200 MHz
Specified in: CISPR 16-1-4
Useable Frequency Range: 10 MHz - 1 GHz
Material: Aluminium
Dimensions: 113 x 150 x 788 mm
Weight: 2.2 kg


pdficon small Datasheet CAL CMAD 1614