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Schwarzbeck CMAD 1614 Common Mode Absorption Device

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  • 30 MHz - 200 MHz Frequency Range
  • Calibration Fixture for CMAD 1614
  • With 4 mm diameter is part of the delivery
  • Calibration fixture was designed for measurements acc. to CISPR 16-1-4 sections 9.5 and 9.6

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Test Equipment Description

The Schwarzbeck CMAD 1614 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.

Application:

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.

Calibration:

The CMAD 1614 can be calibrated with the optionally available "CAL CMAD 1614" calibration adapter as described in CISPR 16-1-4. The procedure is described in detail in the data sheet of the calibration adapter.

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

S11 measured acc. CISPR 16-1-4 Section 9.5

S21 measured acc. CISPR 16-1-4 Section 9.6

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