Výsledky vyhledávání - "Cho Man Tsui"

Calibration of Loop Antennas in Accordance with CISPR 16-1-6:2014+AMD1:2017 at SCL

Autor: Hau Wah Lai, Chi Kin Ma, Steven Shing Lung Yang, Cho Man Tsui

Publikováno v: NCSLI Measure. 14:34-39

This paper presents the ultrasonic flaw detectors calibration system at Standards and Calibration Laboratory (SCL) developed in accordance with the Group 2 tests of ISO 22232-1:2020. The calibration system contains a delay-pulse generator, a function

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3ebffb6d3332aab85f5d2e5336c122db
https://doi.org/10.51843/measure.14.1.6

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Calibration of Timing Parameters of Still Image Cameras and Video Cameras by a Two Dimensional LED Array

Autor: Hau Wah Lai, Cho Man Tsui

Publikováno v: NCSL International measure. 13:23-35

This paper presents a t wo-dimensional 10 x 10 LED array system developed in-house at t he Standards and Calibration Laboratory (SCL) for the calibration of timing parameters of still image cameras and video cameras. In this paper, the circuit design

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7173459f9dbf3753fccfc4d0d62048aa
https://doi.org/10.51843/measure.13.2.4

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Computer Aided Verification of Voltage Dips and Short Interruption Generators for Electromagnetic Compatibility Immunity Test in Accordance with IEC 61000-4-11: 2004 + AMD: 2017

Autor: Hau Wah Lai, Cho Man Tsui, Hing Wah Li

Publikováno v: NCSL International measure. 13:28-39

This paper describes a procedure and a computer-aided system developed by the Standards and Calibration Laboratory (SCL) for verification of voltage dip and short interruption generators in accordance with the international standard IEC 61000-4-11:20

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0b0ed2f6fbb0bc91270e7678ef0240df
https://doi.org/10.51843/measure.13.1.3

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Calibration of Loop Antennas in Accordance with CISPR 16-1-6:2014+AMD1:2017

Autor: Hau Wah Lai, Standards, Cho Man Tsui, Chi Kin Ma, Steven Shing Lung Yang

Publikováno v: NCSL International Workshop & Symposium Conference Proceedings 2021.

This paper presents the procedure developed at SCL for the calibration of loop antennas for test frequencies from 9 kHz to 30 MHz in accordance with CISPR 16-1-6:2014+AMD1:2017. The background, measurement model and uncertainty components are introdu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02712abd77439202b9182411f2ed023d
https://doi.org/10.51843/wsproceedings.2021.06

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Speeding Up Monte Carlo Computations by Parallel Processing Using a GPU for Uncertainty Evaluation in accordance with GUM Supplement 2

Autor: Hau Wah Lai, Aaron Y. K. Yan, Cho Man Tsui

Publikováno v: NCSLI Measure. 12:41-56

The GUM Supplement 2 describes a Monte Carlo Method (MCM) for evaluating measurement models with more than one output quantity. Such models are common in electrical metrology where the measurands m...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::67ca3bfc9868eb45e22cfcc156e247c8
https://doi.org/10.1080/19315775.2019.1710003

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Design of a Synchronous Counter with Two-dimensional 10 x 10 LED array for Calibration of Timing Parameters of Video Cameras

Autor: Cho Man Tsui, Kam Yuen Chan, Hau Wah Lai, Aaron Yui Kuen Yan

Publikováno v: 2019 URSI Asia-Pacific Radio Science Conference (AP-RASC).

In 2011, the Standards and Calibration Laboratory (SCL) developed the video totalize method for calibration of stopwatches with the use of an in-house designed synchronous counter [1]. All digits of the LED display for the counter are updated synchro

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https://doi.org/10.23919/ursiap-rasc.2019.8738243

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GULFMET key comparison of DC voltage at 1.018 V and 10 V

Autor: Srdan Calija, Cho Man Tsui, Jon Bartholomew, Stephane Solve, S.-L.S. Yang, Kyu-Tae Kim, Abdullah M Alrobaish

Publikováno v: Metrologia. 57:01012

This report presents the GULFMET key comparison (GULFMET.EM.BIPM-K11) results of DC voltages at the 1.018 V and 10 V with two travelling electronic DC reference standards. This comparison was supported by the BIPM and GULFMET associate members, KRISS

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::42fe3ed7a06828f2f8e1418bac27fbc0
https://doi.org/10.1088/0026-1394/57/1a/01012

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Provision of Traceable Calibration Services at SCL to Underpin Development of Smart City Initiatives

Autor: Hing Wah Li, Cho Man Tsui, Chi Kin Ma, Hau Wah Lai, Kam Yuen Chan

Publikováno v: 2018 IEEE Symposium on Product Compliance Engineering - Asia (ISPCE-CN).

Smart City is built on networks of Internet of Things (IoT) and sensors. Calibration is important to ensure correct operations of the sensors which in turn improve the reliability and safety of the whole system. The Standards and Calibration Laborato

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8ee36a43a1aa7f790b425a6785a7a0b
https://doi.org/10.1109/ispce-cn.2018.8805770

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