DASY Measurement

Spatial Resolution

Field intensity data collection relies on fine grid steps across the volume of the device under test to capture peak energy deposition. Engineers program the robotic arm to sample thousands of discrete points per scan to ensure the capture of gradients near the surface of the phantom. Variations in grid spacing allow for faster initial scans followed by dense localized sampling where field strength concentrations appear highest.

Accurate resolution of these high energy peaks dictates the final compliance rating for portable wireless products.

Calibration Procedure

Sensor accuracy depends on periodic exposure to known electromagnetic fields inside a controlled waveguide environment. Technicians compare the raw voltage output from the probe against the theoretical field intensity established by physics based calculations for the specific frequency band. Documentation confirming this correlation forms the basis of the certification package required for regulatory submission.

Successful verification of the probe response confirms that the data output reflects the true field intensity levels present during the test sequence.

Environmental Constraint

Ambient temperature and phantom liquid conductivity act as independent variables that affect the outcome of the calculation. Precise control of the lab temperature ensures the dielectric permittivity of the simulant remains within the narrow margin defined by international standards. Deviations beyond these thresholds introduce errors into the probe output that invalidate the captured measurement data.

Maintaining strict thermal stability throughout the scan sequence yields consistent results for regulatory review bodies.