EMC & RF TestSites & TestCells Comtest
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Comtest Instruments Colour Video Monitoring System
Conducted Reference Source
Shielding Solutions Shielded rooms are rooms constructed of metal (usually also having shielded doors), inside of which equipment can be tested without interference from external fields such as lightning or high-frequency (HF) radiation. An anechoic chamber is a shielded room, covered on the inside with absorbers (often Ferrite) which has a completely homogeneous field.
Shielded Rooms
Semi Anechoic Chamber
Full Anechoic Chamber
Compact Full Anechoic Chamber
Open Area Test Site
Shielded Swing Door Shielded Sliding Door Shielded Double Swing Doors Honeycombs
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An ideal camera system to observe the EUT behaviour during RF immunity tests. The system consists of a fibre optical remote controlled, and battery powered, color camera including a color monitor and various accessories. The system is available in PAL and NTSC format. The audio system is designed to transfer the sound, produced by EUT, located in the Test Chamber, to the operator room where it enables the operator to listen to the EUT and provide information of the correct functioning of the EUT. There are no galvanic connections because of use of a fibre optical transmission to the monitor.
The Field Reference Source is a stable, broadband reference generator. The source is designed for rapid evaluation of an EM test site and its performance. The field reference source uses a precision transmission line pulser to generate an accurate stable output.
The Conducted Reference Source is a stable, broadband generator. The source is designed for rapid evaluation of conducted emission measurement tools such as line Impedance Stabilisation Networks (LISN).
The shielded rooms are mostly custom designed to meet the customer objectives in the most economical way. With the experience bundled in our team we can act as design partner and architect to the user. With our CAD/CAM design we reach the highest level of accuracy required to build high performance rooms.The rooms are constructed from 2mm hot galvanized steel plate with 2 u zinc layer. Over the years, the single layer shielding has proofed that it is maintenance free without deterioration of performance.
A Semi Anechoic Chamber is constructed as a shielded room, with absorbing materials on all walls and ceiling, thus simulating an Open Area Test Site, without interference from environmental EM-field pollution. Its main application is in EM emission testing according to Commercial and Military standards. The floor is a full reflecting ground plane.With some additions these chambers can be used for Full Compliance Immunity testing as well. Field strengths up to 200 V/m can be generated when the necessary precautions are taken.
The Full Anechoic Chamber, FAC, is constructed as a shielded room, covered with absorbing materials on all walls, ceiling and floor. Its application is for Full Compliance Immunity testing and can be used for Pre-compliance emission testing. Standards are in preparation to accept Emission testing in this type of chambers as well.
The Compact Full Anechoic Chamber Model is used to perform compliant radiated immunity tests in accordance to EMC-standards including IEC 61000-4-3 and EN 61000-4-3.
An Open Area Test Site, OATS, is the basic model for Full Compliance Emission testing. It is constructed outside free from reflecting objects and other interference sources using a optimal reflecting ground plane. No immunity tests are allowed on the OATS due to possible interference with other transmitters or communication links like Air Traffic Control.
The Shielded Swing Doors are designed for high performance performance shielded enclosures. The doors can be mounted in welded EMP bunkers and in modular panel Faraday enclosures. The Shielding characteristics are achieved by use of a double beryllium copper finger contact strip. In EMC applications, ferrite tiles can be affixed to the standard door leaf. The open/close mechanism is located on the outside for ease of future access. Automatic and Semi Automatic opening and closing available.
Honeycombs are designed for applications in shielded rooms. Various standard dimensions are available to meet different air ventilation requirements