1.13.2 Test procedure

A burst generator shall be used with the performance characteristics as specified in the IEC 61000-4-4 [12]. The characteristics of the generator shall be verified before connecting the EUT.

The test consists in affecting the gas analytical system with pulses of amplitude , which has the form of a double exponent. Each pulse shall have a rise time of 5 ns and half amplitude duration of . The pulse duration shall be and the period of their repetition shall be . The repetition frequency of the impulses and peak values of the output voltage on a load shall be . The transient generator shall have an output impedance of and shall be adjusted before connecting the gas analytical system. At least ten positive and ten negative pulses randomly phased shall be applied. Insertion of blocking filters in the cables to the gas analytical system may be necessary to prevent the pulse energy being dissipated in the mains.

During the test, measurements shall be performed using the CGM with the largest volume fraction for the components to be determined according to 1.2.