GSO IEC 60151-15:2014 Measurements of the electrical properties of electronic tubes and valves. Part 15: Methods of measurement of spurious and unwanted electrode currents
This Recommendation is based on current practice on the measurement of spurious and unwanted electrode currents. It should not be regarded as a Recommendation in the sense of a standard, because a more detailed description of the measuring methods is needed if measuring results on the basis of these principles have to be comparable within definite tolerances. This Recommendation does not apply to gasfilled tubes or valves.
GSO IEC 60151-15:2014 history
2014GSO IEC 60151-15:2014 Measurements of the electrical properties of electronic tubes and valves. Part 15: Methods of measurement of spurious and unwanted electrode currents