CEM
The EMC Test and Measurement category covers instruments used to assess the electromagnetic emissions and susceptibility of electronic equipment. It includes EMI receivers, EMC spectrum analysers, semi-anechoic chambers, LISN 50 Ω/5 µH, field probes, RF generators and current injectors. Tests cover a wide frequency range, from 9 kHz to 18 GHz, with quasi-peak, average and peak detectors in accordance with EN 55032, CISPR 16, DO-160 or MIL-STD-461 standards. In R&D, this equipment locates noise sources, identifies parasitic harmonics and guides the design of filters or ground plans. In pre-qualification, they check the conformity of prototypes before they are submitted to an accredited laboratory. In certification, they guarantee the repeatability and traceability of regulatory tests. Immunity systems reproduce RF fields, ESD, overvoltages and voltage dips to EN 61000-4-x. Used in the defence, rail, aerospace, medical and industrial electronics sectors, these instruments ensure the functional robustness and spectral compatibility of modern architectures.
A pillar of reliable, compliant design.
NSG435
TESEQ SCHAFFNER
Discharge gun +/- 16.5 KV compliant with standard IEC 1000-4-2.
7865HD
SEFRAM
Field strength meter for cable, terrestrial and satellite, with HD display.
7866HD
SEFRAM
Cable and Satellite field strength meter, 45 to 2150 MHz, with integrated GPS.
ESVB
ROHDE & SCHWARZ
Field strength meter for radio coverage, audio and video applications.
ESVD
ROHDE & SCHWARZ
GSM field strength meter from 20MHz to 2.05GHz, with B2 option and I/Q demodulation.
ESMC
ROHDE & SCHWARZ
Compact receiver from 0.5 MHz to 3000 MHz with LCD screen and scanner function.
NBM-550
NARDA
100 KHz to 60 GHz field strength meter with USB interface and PC software.
RADMAN-2XT
NARDA
Warning device for electric and magnetic fields, monitoring up to 60 GHz.
SRM-3006
NARDA
Electromagnetic measurement receiver, 9 KHz to 6 GHz, 7-inch TFT screen.
33P-MICRORAD
MICRORAD
Triple antenna: magnetic, electrical, magnetostatic, 1 Hz to 400 KHz.
NHT310-01E-P1
MICRORAD
Microrad 01E antenna for NHT 310F field strength meter, 100 kHz to 6.5 GHz.
NHT310-04E-P5
MICRORAD
Antenna for Microrad NHT310 field strength meter, 3 MHz to 40 GHz.
concrete questions about CEM
01
Why do EMC tests carried out in-house often differ from accredited laboratory results?Deviations are generally due to the test environment and implementation conditions. In-house, tests are carried out in simplified configurations, without fully standardised chambers or strict control of external disturbances. Nevertheless, these tests remain essential for detecting sources of noise and guiding corrections before an official campaign.
02
At what stage of development should EMC testing be included?As early as possible. Incorporating EMC testing at the design stage means that sources of emissions or susceptibility can be identified quickly, before the architecture is set in stone. Late detection often leads to costly corrective measures, project delays and technical compromises that are difficult to absorb.
03
Why is repeatability a major issue in EMC testing?In EMC, a tiny variation in wiring, positioning or configuration can significantly alter the result. Without repeatability, it becomes impossible to compare two tests or to assess the effectiveness of a correction. Stable methods and equipment are therefore essential if results are to be interpreted correctly.
04
Does the EMC pre-qualification equipment have to be identical to that used in certified laboratories?No. The aim of pre-qualification is not to reproduce a standard test exactly, but to reduce the risks before certification. Suitable equipment that is properly controlled and consistent with the standards in question is sufficient to detect major non-conformities and to guide corrective action.
05
Is reconditioned EMC equipment suitable for in-house testing?Yes, in many cases. Reconditioned, verified and documented EMI receivers, spectrum analysers, LISNs or RF generators offer a level of performance that is suited to development and pre-qualification testing. They enable you to acquire equipment more quickly, at a lower cost, while maintaining a reliable and usable measurement base.
