Near-Field
1) EMF closest to the antenna. 2) Near-field optics.
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Refractive Index Profiler
S14
The S14 Refractive Index Profiler complements optical fiber preform analysis measurements by providing highly accurate and precise characterization of the refractive index profile of drawn single-mode, multimode, and specialty fibers using the RNF (Refracted Near Field) technique. The S14 index profile data produces fiber geometry information directly. Manufacturers can also use S14 data for the prediction of fiber transmission parameters such as mode field diameter, cut-off wavelength, and chromatic dispersion.
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Near Field Probes 30 MHz up to 3 GHz
RF6 set
The RF6 near field probe set consists of 2 passive magnetic field probes and 2 passive E field probes for measurements in the development phase of the E-field and magnetic field in the range from 30 MHz to 3 GHz on electronic assemblies. The probe heads of the RF6 set allow a step by step localization of interference sources of the RF magnetic field and RF-E-field on an assembly. From a larger distance the electromagnetic interference is detected by RF-R 50-1 for the magnetic field and by RF-E 02 for the E-field. The RF-B 3-2 and RF-E 10 probes with their higher resolution can more presicely detect the interference sources of the magnetic field and the E-field. Field orientation and field distribution on an electronic assembly can be detected by special guidiance of the near field probe. The near field probes are small and handy. They have a sheath current attenuation and are electrically shielded. They can be connected to a spectrum analyzer or an oscilloscope with a 50 Ω input. They do not have an internal terminating resistance.
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EMC Accessories
Complete your EMC test setup with the essential accessories to compliment the test equipment. Whether it is a LISN (or V-Network) to counteract interference from external power sources on conducted emissions from the device under test, probes to locate the near field sources of radiated emissions, receive and transmit antennas, or tripods for holding antennas in place, the Rohde & Schwarz catalog of EMC accessories provides the additional items you need for EMI and EMS measurements, guaranteed 100% suitable for use with Rohde & Schwarz EMC test equipment.
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QAM Shadow
ComSonics' QAM Shadow is targeted for in-building leakage detection and ingress mitigation when portability and ease-of-use is most important.contractor work verificationevaluate new property wiringingress detection and mitigationextremely easy to use with one-button operationDOCSIS 3.1 ready to future proof your investmentbuilt-in near-field antenna eliminates the need for external antennas
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RGO-2000P Robotic Goniophotometer For Plant Lighting
Hangzhou Everfine Photo-E-Info Co., LTD
RGO-2000P proposed a solution based on the plant lighting requirement to measure and evaluate the spatial light distribution performance of plant lighting based on the limitations of far-field measurement and ILMD near field distribution goniophotometer.
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Near Field Micro Probe Sets
The near field probe is designed for a high-resolution measurement of electrical near fields.
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Shielding Effectiveness/ Conductivity Test
EM-2107A | 30 MHz – 1.5 GHz
The EM-2107A is a standard test fixture for evaluation of the electromagnetic shielding effectiveness of planar material. The fixture is an enlarged section of coaxial transmission line and complies fully with the requirements of ASTM test method D4935-1. The measured data relates to the shielding effectiveness due to a plane wave (far field EM wave) from which near field values for magnetic and electric fields may be inferred. The EM-2107A is provided with a reference standard test specimen, a dynamic range specimen. Dynamic range of greater than 80dB is achievable, although the cables and other test system components usually establishes the limiting factors.
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Scanning Near Field Optical Microscope
SNOM
SNOM microscopes employ SPMs precision of piezoelectric raster-scanning together with sharp probes to obtain light optical images at rather better than the usual wavelength-limited resolution. The possibility to go beyond the Abbe diffraction limit has been achieved with the Near-field light optical microscopes (SNOM or NSOM).
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EMC Near Field Probes
TBPS01
The TBPS01 EMC near field probes H20, H10, H5 and E5 are magnetic field (H) and electric field (E) probes for radiated emissions EMC pre-compliance measurements. The probes are used in the near field of sources of electromagnetic radiation.
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Plane Wave Converter
PWC200
The R&S®PWC200 Plane Wave Converter is a bidirectional array of 156 wideband Vivaldi antennas placed in the radiating near field of the device under test (DUT). The phased antenna array can form planar waves inside a specified quiet zone within the radiating near field of the 5G massive MIMO base station for realtime radiated power and transceiver measurements (EVM, ACLR, SEM, etc.).
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EMC Scanner
EMxpert
EMXpert is a unique magnetic near field scanning system that helps designers be highly productive in understanding and diagnosing these problems, quickly and early in the development cycle.
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Light Engines
Delivering the highest brightness and optical power available, our light engines provide optimized output solutions for a range of applications such as light guide and fiber optic coupling, fluorescence excitation, and unrivaled uniform near and far field illumination.
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USB Magnetometer
MultiDimension Technology Co.,Ltd.
A three-axis digital magnetometer that is intended for the measurement of magnetic fields near the probe tip at frequencies less than 250 Hz.
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Testing Services
Howland & Lawrence Chamber Services
RF shield testing: IEEE-299, MIL-STD-285, NSA 65-6CTIA CATL certification testing: Probe symmetry and amplitude ripple measurements following Test Plan for Wireless Device Over-the-Air PerformanceAnechoic material test, inspection, remediation: VSWR, inverse spherical nearfield testing of installed material and NRL arch screening tests of individual absorber pieces We can also provide in-process testing of welded steel shielded enclosures with a test technique based on ASME BPVC vacuum box testing—confirm quality of RF welds before the shield envelope is complete. We developed this method for testing the Navy’s Advanced System Integration Lab (ASIL) chamber at Patuxent River, shaving weeks off the construction/testing schedule.
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Near-field Chambers
Most antenna measurements need to be carried out in the far field; that is, the test antenna should be illuminated by a plane wave. Typically this is carried out by providing sufficient separation between the source and the AUT so the spherical wave approaches a plane-wave character.
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RF Near Field Probe Set DC to 9GHz
EMF & RF close field sniffer-set for use with any Spectrum Analyzer or Measurement Receiver. The EMC Near Field probe set allows for straightforward pinpointing and measurement of interference sources in electronic component groups as well as execution and monitoring of generic EMC measurement. Our RF near field probe set is especially suitable for: - Pinpointing interference sources - Estimation of interference field strength - Verification of shielding and filtering measures - Identifying faulty components - Detecting circuitry overly sensitive to interference.
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Emissions Test System
PC-114
Perform Radiated & Conducted EMI pre-compliance testing at your facility up to 1 GHz. Com-Power PC-114 EMI emissions test system is a ideal solution performing pre-compliance EMC testing from 9 kHz - 1 GHz.. It has essential equipment needed for radiated and conducted EMI emissions measurements. The system includes a spectrum analyzer, antennas, near field probes, a preamplifier, LISN and a non conductive antenna tripod. Pre-compliance testing in EMC is a commonly used term not easy to define. In general, it implies testing done prior to formal testing for legal compliance. Formal legal compliance is performed at a facility designed and equipped with test instrumentation that is fully compliant with the applicable EMC standards. Such facility and instrumentation is capital intensive and can be expensive even to rent and not easily available. Compliance testing is performed per exacting requirements of the Standards and other reference documents adhering to the test methods and last detail. In addition, the test facility may require to be accredited by an accreditation body such as NVLAP, A2LA. Often it is desirable to know prior to compliance testing at such facility, whether a product is close to compliance and also how close. Pre-compliance testing is specially useful for specifications such as FCC, Part 15, EN 55022 or EN 55011 (CISPR 22 or CISPR11). Pre-compliance testing usually means using the full compliance methods but making a few educated compromises in use of site or equipment to reduce costs and testing time. Here are some benefits of pre-compliance testing.
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Passive Magnetic Antennas, TX-Loop Antennas
A passive loop antenna which is matched to a resonance frequency of 13.56 MHz with 370 kHz bandwidth (-3dB)The purpose of the antenna is to produce defined magnetic fields at 13.56 MHz efficiently, i.e. to test near field communication devices (NFC) or RFID equipment.
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Scanning Magnetic Microscope
Circuit ScanTM 1000
Operating circuits within a semiconductor generate external magnetic fields near the surface of the device. These magnetic fields, while weak in strength, contain information about the spatial variation of current density flowing within the circuit. Micro Magnetics has developed the CS1000 to make practical use of this information and provide engineers with valuable information about what is going on inside circuitry non-destructively.
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GO-NR1000 Near-Field Goniophotometer
Hangzhou Everfine Photo-E-Info Co., LTD
Suitable for LED light source, LED chip, module and other small light source, the principal function includes: spatial light intensity distribution curve, spatial color distribution curve, iso-lux curve, total luminous flux, effective luminous flux, spatial luminance curve, etc.The test data can be saved as IESNA (*.ies), CIBSE (*.cib), EULUMDAT (*.ldt), CIE (*.cie), CEN (*.cen) and other formats, which can be directly used as the input data of international general lighting design software. Spatial luminance data can be imported into near-field lighting generation software to generate light data that can be imported into third parties (TracePro and LightTools).
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Imaging Goniometers
Radiant Vision Systems fully-automated goniometric systems are combined with a ProMetric® Imaging Colorimeter or Photometer and specialized software to capture a precise, comprehensive model of a light source’s near-field output.
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Large-size Hybrid Reverberation / Anechoic Chamber
F-Series
The F large-size hybrid Reverberation/Anechoic Chamber represents the most versatile OTA test system in the market today. With the same unique test features of their E Series RC counterparts, the F-Series can also test large form-factor devices under test (DUTs) like laptops, large TV sets, solar and trash compactors, drones, fridges or washing and vending machines, among others. With up to 16x16, 8DLCC and DUTs up to 2m and 500 kg including full-body phantoms in a turntable, the F Series also expands the frequency range down to cover 200 MHz up to 40 GHz frequency ranges and the test modes to include EMC, BS, small cell, eNodeB and Virtual Drive Testing over the air (VDT-OTA). In an again unheard-of feature, the F-Series is also reverse-convertible into an Anechoic chamber, allowing Far Field (FF) and Spherical Near Field (SNF) radiation patterns, efficiency and gain measurements and pre-5G testing of antennas and devices. Conversion from RC to AC or vice versa can be performed within half a day.
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Antenna Test Chamber
Comtest provides Antenna test ranges fully covered with microwave absorbers for both near-field and far-field measurements. Because we always strive for new solutions, our R&D department developed our ‘Javelin Tip’ polystyrene absorbers. The enhanced material composition and altered shape, lead to improved performance and cleaner working space, enabling you to make high precision antenna testing fast, reliable, and worry-free.
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Scanner Probe
RFS set
The RFS set consits of three passive near field probes designed for the use in a measurement scanner during the development of E-field and magnetic field. They are designed for frequency ranges of 30 MHz to 3 GHz. The probe heads of the RFS set allow for close measurements needed to correctly localize interference sources on an electronic assembly. They document the whole image of the device under test`s near field. The scanner probes have a sheath current attenuation and are electrically shielded. They are connected to a spectrum analyzer or an oscilloscope with a 50 Ω input. They do not have an internal terminating resistance. The measuring signal can be increased with PA 203 or PA 303 preamplifier. On request RFS, LFS and XFS scanner probes can be produced.
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Seismic Sensor
SmartPhone D
Teledyne Marine Real Time Systems
The highly rugged encapsulated SmartPhone D was designed for use with the SmartSource controller, or SmartPhone D system, for real-time monitoring of near-field signatures.
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Near Radio Field Meter
NRFM-1000
Locate and Identify Hidden Radio Transmitters (Bugs) with our precision meter and included earphone.
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Preamplifier
Is designed for the amplification of measuring signals, e.g. weak signals of near field probes with high resolution.
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Near-Field Detection Module for Imaging
Transmission
Detection optimized for high performance near-field imaging in transmission-modeEnables optical amplitude and phase resolved near field measurementsPatented background-free detection technologyEnables bottom-side (transmission-mode) sample illumination with broadband mirrorSuited for visible and infrared wavelength range 0.5 20 mRequires transparent sample substrateMotorized parabolic mirror for easy beam-alignment in transmission-modeStationary focal point with respect to AFM-tipVariable illumination spot size (ca. 2m 100m)Suitable for plane-wave illuminationSupported AFM scan-speed: up to 20 m/s @ highest spatial resolution
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Near-Field Scanning Optical Microscope Platform
MoScan-F
MoScan-F is a device that enables you to get the best up-to-date available spatial optical resolution using the near field scanning optical microscope (NSOM) principle
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Near Field Micro Probe ICR HV H Field
The measurement coil is located vertically in the probe head. The near field probes are run with a positioning system (Langer Scanner).
