Waveforms are defined differently depending on the authority.
For tests defined by Telcordia (Becore GR-1089), the waveform definition is as shown here (for GR-1089, Second Edition).
For tests defined by all other authorities, including IEEE, IEC, ITU-T, UL and the FCC, the waveform definition is as shown here.
MegaPulse Waveform Accuracy Criteria
When Standard authorities specify accuracy in the defining document, we use those stipulations when calibrating the MegaPulse. An example of this is the Belcore GR-1089, which in Appendix A, specifies waveshape, as well as accuracy.
Most Standards do not specify accuracy. In that case, we use IEC 1180-1, Paragraph 6.2.2 (Voltage) and Paragraph 7.2.2 (Current).
BNC Monitor Output Accuracy
The BNC voltage and current outputs are for reference only, for the operator to confirm that a waveform was sent to the EUT. Accuracy of these outputs is greatly affected by noise generated by the waveform. Further, this noise is multipled by the attenuation factor of the BNC Monitor, which artificially increases the noise shown at this output. Further, time differences due to lead length skew the result. Use this output for waveform confirmation only.
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