SAR and HAC test benches
28Pages

RF Safety SAR & HAC test benches

> A few basics on SAR & HAC measurements The proliferation of consumer mobile telecommunication equipment (MTE) has raised concerns about potential adverse health effects due to electromagnetic eld exposure. For radio frequency safety purposes, international regulatory bodies and committees have elaborated standards to which MTE should comply. SATIMO offers a range of Specic Absorption Rate (SAR) and Hearing Aid Compatibility (HAC) measurement systems for the test and certication of MTE. Why do we measure SAR values? The radio frequency (RF) energy radiated by MTE is absorbed in the body...

The SAR values are complex to measure as the penetration of energy within human tissues depends on many factors, such as the type of the phone, the shape of the user’s head or the frequency. For this reason, SAR measurements are performed in laboratory using specic instrumentation dened in the standards: head phantom, liquid, E-eld probe… The use of mobile phones together with hearing aid devices can cause interferences. For this reason, the Federal Communications Commission (FCC) has required that mobile phone compatibility with hearing aid devices be measured. This compatibility must be...

> COMOSAR bench SATIMO provides a complete line of SAR products which ensures compliance to certication standards as well as exibility in terms of set up and use. From our own measurement activity and the information gathered from customers’ experience, we continuously optimize our system. The COMOSAR standard bench includes a set of additional accessories and equipment to cover all customer needs and offers full turn-key systems. COMOSAR TWIN conguration • KUKA KR5 6 axis robot, GPIB card; 1 E eld probe (with liquids and dipoles), tables, Video Positioning System (VPS), SAM phantom,...

Vector network analyser OPENSAR software Signal generator Network emulator Compliant COMOSAR bench has been developed to perform SAR measurements for the certication of handsets in full compliance with the international standards in force. It is available with a range of additional equipment and accessories to cover all needs with regard to these standards. Flexible Set up COMOSAR can be delivered with one or two phantom tables. The tables can be used for most available SATIMO phantoms (SAM or Elliptic), as well as for HAC equipment. TWIN conguration is particularly useful to perform...

> OPENSAR SW OPENSAR software has been developed to perform SAR standard compliant measurements. It is part of SATIMO’s COMOSAR bench and controls all the instrumentation delivered with this bench. In addition, OPENSAR can easily integrate additional drivers upon customer request. OPENSAR software also uses optimized algorithms, particularly useful for the development phase of handset design. • IEEE 1528; FCC OET Bulletin 65 (Ed. 97-01) supplement C; IEC 62209-1/ IEC 62209-2; EN 50361:2001; EN 50383 > Function: • Controls COMOSAR test bench instrumentation for both certication and fast R&D...

Main Functions OPENSAR is a user friendly interface to supervise the proper functioning of the system: • Congures measurement: once the measurement parameters have been dened, they will be loaded automatically. • Imports handset 3D les to be used by the interface (3DS, IGES, STEP……). • Denes easily the probe path and resolution in plane and volume mode. • Generates Word reports automatically and customizes the format of these reports. • Compares FDTD simulation (CST format) with measurement data in one interface. • Gives views of E eld amplitude in 3 modes: - 3 D view of plane and volume...

• Measures the compatibility of hearing aid devices with handset • E and H eld probes, T-coil probe, Data Acquisition Module, validation dipoles and positioning system > Optional additional equipment: • Certication bodies, regulatory bodies, R&D and test laboratories, terminal manufacturers, antenna manufacturers • Helmholtz coil • Network emulator (BS simulator) with audio option, power meter, power amplier, and signal generator > Additional required equipment:

The COMOHAC bench allows measurements to be performed in compliance with the ANSI C63.19 standard. It can be used with the robot and device positioning system of the COMOSAR bench. The COMOHAC bench enables the M (RF test) and T (audio test) rating of the phone to be dened. OPENHAC Software GPIB GPIB Bus Robot Voltmeter E-Field probe Network emulator with audio option H-Field probe Audio measurement chain OPENHAC Software PCI GPIB Bus Network emulator with audio option T-Coil probe

➊ Technical characteristics of validation dipole RF Emissions (ANSI C63.19 clause 4) • RF electric eld emissions. • RF magnetic eld emissions. Please refer to dipole validation sheet on P22 T-coil Mode (ANSI C63.19 clause 6) • T-coil mode, magnetic signal strength in the audio band. • T-coil mode, magnetic signal frequency response through the audio band. • T-coil mode, magnetic signal and noise articulation index. HAC positioning system • Allows the correct positioning of the handset in relation to the tip of the probe. ➋ Technical characteristics of E-eld and T-coil probes Please refer to...

> CALISAR Bench The calibration process allows the assessment of the relation between the theoretical E-eld and the effective voltage at the tip of the probe using a waveguide method. In a second step, the bench measures the isotropy (axial and hemispherical) and linearity values of the probe. CALISAR E-eld probe calibration software allows the following equipment to be controlled: robot, voltmeter, synthesizer and power meter. • Probe calibration bench • CALISAR software • Calibrates E eld probes used for SAR measurements • Mechanical assembly system, 2 waveguides > User prole: •...

CALISAR software Signal generator Power amplier Power meter Coupler Main Functions Hardware requirements • Denes measurement parameters: frequency, liquid properties, cable loss and waveguide S11. • Checks if all devices are correctly connected to the PC and congures GBIB address for each instrument. • Calculates isotropy (axial, hemispheric) and linearity values. • Creates a Word report. • Denes the robot reference point of the VAT and memorizes this reference. • Exports probe factor in OPENSAR format. • Use of the VPS for automatic reference. Cable link Operating system