Psophometer from Mexico
A psophometer measures weighted noise in telephone circuits using the psophometric curve for standardized audio assessment. It is specifically listed as an example under tariff item 9030.40.00 for telecommunications noise measurement.
Duty Rate — Mexico → Canada
0%
Import Tips
• Confirm the psophometer uses the psophometric weighting curve for telecom noise measurement
• Provide the ITU-T standard reference to support classification
• Keep the instrument's calibration certificate for CBSA inspection