RF & Microwave

RF power and scattering parameter or S-parameter are the quantity associated with microwave measurements where the services are offered by the laboratory to support national RF and microwave measurements activities. Measurement frequency capability starts from the range of 10 MHz up to 18 GHz. The measurements are limited to Type N and PC7 connectors. The estimated uncertainties for RF power and S-parameter are described as follows:

Parameters

Uncertainty (±)
RF power at 1 mW 2.0 % to 2.4 %
Reflection Coefficient 0.015
Attenuation 0.2 to 3.5 dB

 

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Time And Frequency

tf3NMIM’s Time and Frequency laboratory maintains two high performance and three standard performance Caesium (Cs) atomic reference frequency standards. One of the high performance Cs reference frequency standards is designated as Malaysian National Frequency Standards (MNFS), with accuracy of ± 5 × 10-13 s .

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 With these standards and continuous All-in-View GPS time comparisons, where the data is contributed to Bureau Weights and Measures (BIPM) for the generation of the International Atomic Time (TAT) scale. NMIM is capable to provide traceability to the SI Unit of time interval for time and frequency measurement.

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 Malaysian Standard Time (MST) is UTC (NMLS) + 8 Hours, due to the time zone selected which is the longitude of 1200 East. UTC (NMLS) is currently defined to be the epoch of the 1 pulse per second timing signal output at the rear panel of the Malaysian National Frequency Standards. NMIM steers the frequency of the standard to maintain UTC(NMLS) to be within approximately 1 ms of the Coordinated Universal Time (UTC).

Magnetics

m1bMagnetics Laboratory has developed high accuracy capability to support national magnetics measurement activities. The chart illustrates the traceability for magnetics measurement in Malaysia.

 m1a

Calibration of magnetic field measurement devices in the range of 0.1 mT to 20 mT performed in a Helmholtz coil.  An electromagnet used to generate DC magnetic fields and perform calibrations in the range of 100 mT to 1.6 T. AC magnetic flux density calibration is being offered in the range of 1 µT to 0.5 mT at 50Hz to 20 kHz. Calibration of fluxmeter is also provided in the range of 1 mWb to 10 Wb.

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DC Helmholtz Coil 

Electromagnet

AC Helmholtz Coil 

Fluxmeter Calibrator 

Power & Energy

AC power and energy standard are maintained by Power/Energy Laboratory of NMIM. The function of the laboratory is to provide measurement and calibration of AC power and energy. In legal metrology, the laboratory involved in pattern approval of electricity meter used for trade.  

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DC Voltage

Voltage Laboratory has developed high accuracy capability to support national voltage activities. The chart illustrates the traceability for voltage measurement in Malaysia.

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The traceability of DC voltage standard to SI unit is realised by using Josephson Junction Voltage system in the range of 1 V, 1.018 V and 10 V with best uncertainty at 0.2 mV.

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JJV Systems Zener Voltage Standard 732B Zener Voltage Standard 7001

NMIM Info

NMIM plays an important role in disseminating the traceability of measurement to the whole country based on the International System of Units. Just like other world standard laboratories, NMIM has great responsibility in ensuring the national metrology infrastructures meet and comply with the global measurement standards.

Get In Touch

National Metrology Institute of Malaysia (NMIM)
Lot PT 4803, Bandar Baru Salak Tinggi
43900 Sepang
Selangor Darul Ehsan

Corporate inquiries:  irene@sirim.my , 03-87781605                          

Service inquiries:  serviceNMIM@sirim.my , 03-87781604                               

Complaint and feedback: feedbackNMIM@sirim.my

Training course request: NMIMtraining@sirim.my