Screened anechoic chambers are widely used nowadays both for radiated emissions and radiated immunity tests. Their advantage of environmental control and absence of ambients is balanced by the disadvantage that reflections from walls and ceiling compromise the desirable site propagation characteristics. Anechoic lining deals with these reflections, but not perfectly; the purpose of chamber calibration is to measure the imperfections introduced by the residual reflections and to show that they are within acceptable limits.
Contact Teseq for further details
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Why calibrate chambers?
- Commissioning / certification of newly built chambers
- Certification of modified or upgraded chambers (e.g. New absorber installation)
- Change of use of chamber – (e.g. for new standards)
- Periodic check to ensure stability/repeatability of results (as required by many
accreditation or regulatory bodies) |
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Why use Teseq?
1. Accredited measurements
- UKAS
- Widely recognised accreditation
- Provides Traceability to National Standards (NPL)
- Provides confidence in measurement data
2. Independence
3. Experience and expertise
- More than 10 years experience measuring test facilities worldwide
- Problem solving on non-compliant chambers
- Consultancy services
4. Efficiency
- Bespoke software and optimised measuring procedures reduces operational down time (and associated costs)
- All test equipment is provided and services are offered worldwide
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Who Uses Teseq’s Chamber Calibration Services?
1. Chamber manufacturers
- Most of the major manufacturers have used our services
2. Test Laboratories
3. ‘Blue-chip’ companies
- Major automotive manufacturers
- Major technology companies worldwide
4. Military and Aerospace industries
5. Research Institutes
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Teseq’s capability
- Normalised Site Attenuation (NSA)
Semi Anechoic Chambers
Open Area Test Sites (dipole calibration)
Alternative test sites (covered OATS etc)
Free-Space Chambers
- Field Uniformity
- Shielding Effectiveness
Anechoic Chambers
Shielded rooms
Architectural Shielding
Medical Shielding installations
Security Shielding Installations
- Electromagnetic Site Surveys
Suitability for test sites
Determination of architectural shielding requirements
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Applicable Standards
- NSA
ANSI C63.4
CISPR 16-1
EN55022
EN50147-2
EN50147-3
DEF STAN 59-41
Plus others……
- Field Uniformity
IEC 61000-4-3
- Shielding Effectiveness
MIL STD 285
IEEE 299
NSA 65-6
EN50147-1
Plus others……
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Current Test Capabilities
- NSA
30 MHz – 18 GHz
- Field Uniformity
26 MHz – 18 GHz
- Shielding Effectiveness
10 kHz – 30 MHz Magnetic Field
10 kHz – 30 MHz Electric Field
30 MHz – 18 GHz Plane Wave
Shielding levels in excess of 100dB |
Read more about chamber calibration
