IEEE Std 181:2003 pdf free download

IEEE Std 181:2003 pdf free download.IEEE Standard on Transitions, Pulses, and Related Waveforms.
5.2.2.3 User defined
This method is based on assumptions made by, or expectations of, the user (operator) regarding the behavior of the waveform generator. These assumptions or expectations should be based on knowledge of, for example, the wavefrmn generator circuitry, the interaction between the wavform generator and the load (measurement instrument), and/or previous observations. Using this information, the user states what the values are for the low and high slates of the wa’tform *
5.2.2.4 Use other waveform epochs
Two or more waveform epochs may be necessary because the wavefrmn from which a given parameter is to he computed may not contain enough information for that computation. For example, in computing transition duration, if the wavefi)rm has not settled to its final or initial states within a shorter wavefrrni epoch from which transition duration can he computed. and the wavefbrm of longer epoch(s) does not have the temporal resolution required to accurately compute the transition duration, then two or more epochs are necessary to compute transition duration. At least two wav/orms will be required, one or more having a long epoch from which the state levels will he obtained, and one having a short epoch from which the transition duration will he computed.
a) Identify the wave/brm epochs to he used, E1, E,, and possibly E3. Three wawfirms are necessary if the low state and high state are to be computed from different ii’aveJbrms.
b) Acquire the wavefbrmn(s) from which the low state and high stale are to he determined.
c) Compute the low state and high state of the appropriate wavefi)rmns.
The low slate and high state thus determined are the low state and high state of the wavefbrm.
5.2.2.5 Static levels
This method requires that the pulse generator used to generate the step-like wavformn can be operated such that it also provides two dc levels, one corresponding to the low stale of the pulse to be measured and the other to the high state of the same pulse. Furthermore, these dc levels must he supplied at the same connector from which the pulse is output and that these levels can be uniquely selected.
a) Operate the pulse generator so that it outputs a dc level that is equal to the level of the low state of the pulse.
b) Acquire a waveform of this low state level, and compute its value by a user-specified method; this is the low state of the waveform.
c) Operate the pulse generator to output a dc level that is equal to the high state of the pulse, and measure this level.
d) Acquire a wc:waveformn of this high state level, and compute its value by a user-specified method; this is the high slate of the wa veformn.
5.2.3 Algorithm switching.