Other instruments and apparatus, specially designed for telecommunications (for example, cross-talk meters, gain measuring instruments, distortion factor meters, psophometers)
Oscilloscopes, spectrum analyzers and other instruments and apparatus for measuring or checking electrical quantities, excluding meters of heading 90.28; instruments and apparatus for measuring or detecting alpha, beta, gamma, X-ray, cosmic or other ionizing radiations. > Other instruments and apparatus, for measuring or checking voltage, current, resistance or power (other than those for measuring or checking semiconductor wafers or devices): > Other instruments and apparatus, specially designed for telecommunications (for example, cross-talk meters, gain measuring instruments, distortion factor meters, psophometers) > Other instruments and apparatus, specially designed for telecommunications (for example, cross-talk meters, gain measuring instruments, distortion factor meters, psophometers)
Duty Rate (from China)
Products classified under Tariff item 9030.40.00.00
Bit Error Rate Tester
A Bit Error Rate Tester (BERT) generates predefined test patterns and measures bit error rates in digital telecommunications systems, including fiber optic and wireless networks. It is specially designed for telecommunications performance testing, making it classifiable under tariff item 9030.40.00.
9030.40.00Cross-Talk Meter
A cross-talk meter is a specialized instrument that measures unwanted signal interference between communication channels in telecommunications networks. It is explicitly listed as an example of telecom-specific apparatus under tariff item 9030.40.00.
9030.40.00Distortion Factor Meter
A distortion factor meter quantifies harmonic and non-linear distortions in telecommunications signals to maintain voice and data quality. It is explicitly named as an example of telecom-specific apparatus under tariff item 9030.40.00.
9030.40.00Echo Canceller Test Set
An echo canceller test set evaluates echo cancellation performance in VoIP and telephony systems by injecting and measuring echoes. It is specially designed for telecommunications testing, falling under tariff item 9030.40.00.
9030.40.00Group Delay Meter
A group delay meter measures signal phase delay variations across frequencies in telecommunications filters and lines. It is specially designed for telecom applications, making it classifiable under tariff item 9030.40.00.
9030.40.00ISDN Protocol Tester
An ISDN protocol tester tests ISDN layer 1-3 protocols for digital telephony networks. It is specially designed for telecommunications, falling under tariff item 9030.40.00.
9030.40.00Jitter Measurement Instrument
A jitter measurement instrument measures timing variations in clock and data signals for synchronous telecommunications networks. It is specially designed for telecom timing analysis, classifiable under tariff item 9030.40.00.
9030.40.00Network Impairment Simulator
A network impairment simulator emulates packet loss, jitter, and latency in IP telecommunications networks for performance testing. It is specially designed for telecom simulation, falling under tariff item 9030.40.00.
9030.40.00Noise Figure Meter
A noise figure meter quantifies noise performance in telecommunications amplifiers and receivers using the Y-factor method. It is specially designed for telecom applications, classifiable under tariff item 9030.40.00.
9030.40.00Optical Time Domain Reflectometer
An Optical Time Domain Reflectometer (OTDR) analyzes fiber optic cables by sending light pulses and measuring reflections to detect faults and losses. It is specially designed for telecommunications fiber infrastructure testing, falling under tariff item 9030.40.00.
9030.40.00Power Meter for Telecom Signals
A power meter for telecom signals is specially calibrated for optical or RF signal levels in dBm across fiber and antenna systems. It is designed for telecommunications use, classifiable under tariff item 9030.40.00.
9030.40.00Protocol Analyzer for Telecom
A protocol analyzer for telecom captures and decodes telecommunications protocols like SS7 and Diameter for network diagnostics. It is specially designed for telecom signal checking, falling under tariff item 9030.40.00.
9030.40.00Psophometer
A psophometer measures weighted noise in telephone circuits using the psophometric curve for standardized audio assessment. It is explicitly listed as an example under tariff item 9030.40.00.
9030.40.00Return Loss Meter
A return loss meter measures signal reflection in telecommunications cables and components for impedance matching. It is specially designed for telecom applications, classifiable under tariff item 9030.40.00.
9030.40.00Signal Gain Measuring Instrument
A signal gain measuring instrument precisely measures amplification or attenuation of signals in telecommunications transmission lines and equipment. It is specially designed for telecom applications, falling under tariff item 9030.40.00.