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Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow…

Overview EN ISO 389-4:1998 (ISO 389-4:1994) defines reference levels for narrow-band masking noise used in the calibration of audiometric equipment. It specifies how much narrow-band noise (presented…

Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow…

Overview EN ISO 389-4:1998 (ISO 389-4:1994) defines reference levels for narrow-band masking noise used in the calibration of audiometric equipment. It specifies how much narrow-band noise (presented…

Road vehicles — Wheels/rims for commercial vehicles — Test methods

Commercial vehicles — Wheels/rims — Test methods

Road vehicles. Wheels/rims for commercial vehicles. Test methods

1 Scope This International Standard specifies two laboratory methods for testing certain essential strength characteristics of disc wheels intended for road use on commercial vehicles, buses, trailer…

Road vehicles — Wheels/rims for commercial vehicles — Test methods

Road vehicles — Trucks — Wheels/rims — Test methods

Acoustics — Reference zero for the calibration of audiometric equipment — Part 4: Reference levels for narrow…

Overview ISO 389-4:1994 - "Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow‑band masking noise" specifies standardized reference levels fo…

Road vehicles — Wheels/rims for commercial vehicles — Test methods

Overview ISO 3894:2023 - Road vehicles - Wheels/rims for commercial vehicles - Test methods specifies two laboratory test methods to evaluate essential fatigue strength characteristics of disc wheels…

Road vehicles. Wheels/rims for commercial vehicles. Test methods.