NMIM’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 .

 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.

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

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.

DC Helmholtz Coil	Electromagnet	AC Helmholtz Coil	Fluxmeter Calibrator

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.  

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

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.

JJV Systems	Zener Voltage Standard 732B	Zener Voltage Standard 7001