impedance

impedance, Total:62 items.

National Metrological Verification Regulations of the People's Republic of China

JJG 2011-1987 RF Impedance Measuring Instruments
JJG(电子) 05007-1987 HP4192A Low Frequency Impedance Analyzer Trial Verification Regulations
JJG 127-1986 Verification Regulation of Model HP4191A RF Impedance Analyzer
JJG 2012-1987 3cm Impedance Measuring Instruments
JJG 991-2004 Verification Regulation of Aural Impedance Audiometers

T/SEAMTA 000006-2022 High-impedance power transformer
T/CSA 047-2019 Measurement Method for Real Thermal Resistance and Impedance of Light Emitting Diodes
T/CPSS 1008-2022 Test specification for impedance characteristics of power supply equipment in information system
T/GVS 007-2022 Test method for dynamic impedance of RF generator
T/CPSS 1005-2021 Technical specification of impedance sweeping equipment of low voltage DC distribution and utilization system

GB/Z 42004-2022 Consideration of reference impedances and public supply network impedances for use in determining the disturbance characteristics of electrical equipment having a rated current ≤75 A per phase
GB/T 34205-2017 Metallic materials--Hardness testing--Ultrasonic contact impedance method
GB/T 5441.4-1985 Test methods for communication cable--Impedance and impedance irregularities test of coaxial pair--Pulse method
GB/T 16440-1996 Vibration and shock - Mechanical driving point impedance of the human body
GB/T 8977-1988 300Ω/75Ω balun for FM and TV broadcast receiver
GB/T 18696.1-2004 Acoustics - Determination of sound absorption coefficient and impedance in impedance tubes - Part 1:Method using standing wave ratio
GB/T 30820-2014 Non-destructive testing―Practice for determining the impedance of absolute eddy-current probes
GB/T 15953-1995 Instruments for the measurement of aural acoustic impedance/admittance
GB/T 27603-2011 Measurement of radiofrequency impedance for industrial electric detonator
GB/Z 27764-2011 Acoustics - Determination of sound transmission loss in impedance tubes - Transfer matrix method
GB/T 18696.2-2002 Acoustics - Determinatio of sound absorption coefficient and impedance in impedance tubes - Part 2: Transfer function method

SJ 2534.14-1985 Test procedures for antennas-Measurement of impedances
SJ 20788-2000 Measurment method for thermal impedance of semiconductor diodes
SJ 2139-1982 Methods of measurement for dynamic impedance of silicon current regulator diodes
SJ 2148-1982 Methods of measurement for dynamic impedance of silicon current regulator transistors
SJ/Z 9183-1995 Specifications for determination of low-impedance longevity aluminum electrolytic capacitors used for VCR

DL/T 2553-2022 Guide for measuring earth resistivity, ground impedance, and earth surface potentials of power grounding system
DL/T 479-2017 Impedance protection function technical specification

JJF 1771-2019 Program of Pattern Evaluation for Measuring Instruments of Aural Acoustic Impedance/Admittance
JJF 1305-1990 O.T.N. of Microwave Impedance Primary Standard at X-Band
JJF 1446-2014 Calibration Specification for Impedance Tubes(Transfer Function Method)
JJF 1127-2004 Calibration Specification for RF impedance/Meterial Analyzers

JB/T 11725-2013 Electrical control system of machine tools — Test specification for fault loop impedance
JB/T 11277-2012 Non-destructive testing instruments — Single channel acoustic impedance instrument
JB/T 10220-2000 Electrical relays Part 16 Impedance measuring relays
JB/T 8171-1999 Under-excitation Impedence Protection Equipment for Generator

DB13/T 5384-2021 Test procedure for soil bulk density by complex impedance method
DB13/T 2215-2015 Technical regulations for the determination of cold resistance of seedlings by electrical impedance spectroscopy

TB/T 2828-1997 Calculation Method of Impedance of Electrified Railway Traction Network

SN/T 1749-2006 Rapid detection of aerobic bacterial count in raw milk-Impedance method
SN/T 2558.9-2015 Testing method for import and export functional textiles―Part 9:Antibacterial activity in textiles for import and export―Impedance method

CB 20136-2015 Measurement method of mechanical impedances of flexible pipe in three translational directions

DB44/T 1365-2014 Technical Requirements for Impedance Method Respiratory Physiological Monitoring Equipment

ANSI/ASTM C384-1977 Impedance and Absorption of Acoustical Materials by the Impedance Tube Method
ANSI/ASTM C384-1985 Impedance and Absorption of Acoustical Materials by the Impedance Tube Method
ANSI/NEMA WC 61-2005(2015) American National Standard for Transfer Impedance Testing
ANSI S1.18-1999 Template Method for Ground Impedance

JIS E 3603:1980 Impedance bonds
JIS A 1405:1998 Acoustics -- Determination of sound absorption coefficient and impedance in impedance tubes -- Method using standing wave ratio

UNI EN ISO 16773-1:2007 Paints and varnishes - Electrochemical impedance spectroscopy (EIS) on high- impedance coated specimens - Part 1: Terms and definitions

BS EN ISO 10534-1:2001 Acoustics - Determination of sound absorption coefficient and impedance in impedances tubes - Method using standing wave ratio
BS EN ISO 10534-2:2001 Acoustics. Determination of sound absorption coefficient and impedance in impedance tubes - Transfer-function method
BS EN ISO 10534-2:1999 Acoustics - Determination of sound absorption coefficient and impedance in impedance tubes - Transfer-function method

KS F 2814-1-2016(2021) Determination of sound absorption coefficient and impedance in impedance tubes Part 1：Method using standing wave ratio
KS F 2814-1-2016 Determination of sound absorption coefficient and impedance in impedance tubes Part 1: Method using standing wave ratio
KS F 2814-1-2021 Determination of sound absorption coefficient and impedance in impedance tubes Part 1: Method using standing wave ratio

ASTM RR-E33-1006 1991 C0384-Standard Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube Method