EMC testing equipment to certify and comply to CISPR 25: Automotive Component EMC Testing. The EMC shop is the only online store for electromagnetic compliance test equipment.
Subcategories
Rent, buy or lease CISPR 25 Antennas. The EMC Shop specializes in measurements of radio frequency emissions.
Rent or Buy Artificial Mains Networks per CISPR 25.
The AN shall have a nominal 5 mH inductance and shall meet the impedance characteristics shown in figure 3 with a tolerance of ±10 %. A suggested schematic is shown in annex F. The measuring port of all ANs shall be terminated with a 50 W load (either a measuring instrument or a resistor). For the purpose of this standard, the AN may be used from 0.1 to 108 MHz.
For radiated emission measurements, the reflected energy can cause errors of as much as 20 dB. Therefore, it is necessary to apply r.f. absorber material to the walls and ceiling of a shielded enclosure that is to be used for radiated emissions measurements. No absorber material is required for the floor. The following ALSE requirements shall also be met for performing radiated r.f. emissions measurements.
Buy new or used Absorber-lined Shielded Enclosures (ALSE). The EMC Shop specializes in radiated emissions, immunity/susceptibility testing and compliance.
Scanning receivers which meet the requirements of CISPR 16-1 are satisfactory for measurements. Either manual or automatic frequency scanning may be used. Special consideration shall be given to overload, linearity, selectivity, and the normal response to pulses.
NOTE – Spectrum analysers and scanning receivers are particularly useful for disturbance measurements. The peak detection mode of spectrum analysers and scanning receivers provides a display indication which is never less than the quasi-peak indication for the same bandwidth. It may be convenient to measure emissions using peak detection because of the faster scan possible with peak than with quasi-peak detection.
When quasi-peak limits are being used, and a peak detector is used for time efficiency, any peak measurements at or above the quasi-peak limit shall be re-measured using the quasipeak detector.
The EUT power supply shall have adequate regulation to maintain the supply voltage within the limits specified: 13,5 V ± 0,5 V for 12 V systems, 27 V ± 1,0 V for 24 V systems, unless otherwise specified in the test plan. The power supply shall also be adequately filtered such that the r.f. noise produced by the power supply is at least 6 dB lower than the limits specified in the test plan.
Rent, buy or lease EUT power supply for the component/module test in CISPR 25. The EMC Shop specializes in automotive emissions and immunity testing.
The EMC Shop offers complete test setups to Figures 9-13 of CISPR 25, consisteting of a copper table, relative permittivity material and ground reference plane. Custom solutions includins LISN's, power supplies, shielded enclosures and more are available.
The current probe shall be selected considering the following: the size of the harness to be measured, the frequency range required by the test plan, and the sensitivity of the probe necessary to measure signals at the limit level.
NOTE – Typically, a current probe is a transducer which converts current to voltage. As such, its calibration factor is often called a transfer impedance curve and is given in W or dB(W). (See annex C.)
Rent, buy or lease current probes for CISPR 25. The EMC Shop specializes in test equipment for automotive conducted emission measurements.
For the purpose of this test, the septum of the TEM cell functions in a similar way to a receiving antenna.
Rent, buy or lease TEM Cells for CISPR 25 Section 6.6 testing. The EMC Shop specializes in automotive radiated emissions and immunity compliance testing.
The TEM cell shall have a connector panel connected as close as possible to a plug connector (see figure 5). All supply and signal leads from the EUT are directly connected to the artificial harness (e.g. a lead frame). The plugs at the connector panel which are not required shall be sealed so that they are r.f.-tight.
The connection of the positive power lead shall be through the AN (see 6.4.1.2), direct at the connector panel. It is not permitted to ground the EUT directy to the TEM cell floor. The grounding shall be doneat the connector panel.
