Radiated Emissions: Near Field Probes

Near field probes detect electrical or magnetic energy in the field directly around a device under test. These probes are commonly used to perform pre-compliance EMC testing on a product in order to detect the presence of electromagnetic interference, or EMI, exceeding relevant regulatory standards.

Two basic varieties of near field probes are E-field probes and H-field probes. E-field probes interact with electric fields generated by voltage changes; the bulbous ending of the probe directly contacts a circuit, tracing the emissions on individual pins or a circuit board. H-field probes are responsive to magnetic fields generated by current changes. The conductive loop on the end of the probe will detect the magnetic field when scanning the component or device. Engineers ensure products achieve EMI compliance by using both probes together to discover the source of EMI.

The newest technology in near field probes are scanners that produce images of the real-time emissions of PCBs without using an external spectrum analyzer. These scanners capture results and display them on your monitor, allowing you to visually inspect and pinpoint issues in seconds.

Industries which require EMC testing for their products, like the defense, aerospace, automotive, medical and communications fields, rely on field probes to ferret out radiated emissions before sending their devices to accredited EMC labs to fulfill IEC-61000, CISPR and MIL-STD standards.

ATEC supplies near-field probe test sets with test frequencies ranging from 9 kHz to 18 GHz. We rent standard probes, laser powered probes, fiber optic transmitters, EMC/EMI diagnostic systems and more. View our inventory below.
Keysight Keysight 11941A Close Field Probe

9 kHz - 30 MHz, Close Field Probe Also Available: The close field probe set Model 11945A...

  • Keysight
ETS-Lindgren (EMCO) EMCO/ETS-Lindgren 7405 E/H Near Field Probes

The EMCO / ETS-Lindgren 7405 E/H Near Field Probes are a passive, near field probe set designed...

Com-Power Com-Power PS-400 Near Field Probe Set

The Com-Power PS-400 Near Field probe set consists of two E-Field probes and a H-Field probe for...

AH Systems AH Systems AK-18G 20 Hz - 18 GHz EMC Antenna & Probe Kit

The AH Systems AK-18G Antenna Kit consists of five E-field antennas, one magnetic loop antenna...

Com-Power Com-Power PS-500 Near Field Probe Set for EMI/EMC Testing

In addition to the probes included in the PS-400 probe set, the PS-500 near field probe set...

Electro-Metrics Electro-Metrics EM-6992 Near Field Probe Set

The EM-6992 Probe Set is intended to serve as a versatile aid for diagnostic testing of radiated...

EMSCAN EMSCAN ERX EMC Scanner

The EMSCAN ERX EMC Scanner is an EMC and EMI diagnostic test system with a frequency range of 150...

EMSCAN EMSCAN ERX+ EMC Scanner

The EMSCAN ERX+ EMC Scanner is a lightning-quick high resolution EMC/EMI diagnostic system with a...

Keysight Keysight 11940A Close Field Probe

30 MHz - 1 GHz, Close Field Probe Also Available:  The close field probe set Model 11945A...

  • Keysight
Keysight Keysight 11945A-E51 Closed Field Probe Set

9 kHz - 1 GHz Close Field Probe Set complete with Amplifier

  • Keysight
Keysight Keysight N9311X-100 Close Field Probe Set, 30 MHz - 3 GHz

The Keysight N9311X-100 Close Field Probe Set, 30 MHz - 3 GHz provides magnetic field probes for...

  • Keysight
Noiseken Noiseken FVC-1000 EMI Noise Sensor, 30-1000 MHz

The Noiseken FVC-1000 EMI Noise Sensor can accommodate standards such as EN 61000-6.

Noiseken Noiseken FVC-777 EMI Noise Sensor, 30 MHz - 1 GHz

The manual provided with this unit is Japanese. However, the FVC-777 is very easy to use and can...