Bibliographic record
Abstract
This paper addresses the transients that may be experienced on the -48 V rail, with the objective of establishing a practical transient waveform, suitable as a design requirement for the equipment providers and acceptable to the equipment users. After an introductory description of the transient phenomena that take place in the power distribution circuits when a short-circuit-type fault occurs, the paper reviews the parameters that determine the characteristics of the transients likely to occur in the field. Both experimental data and data produced by various telecommunications companies and standards organizations in their efforts to characterize and specify the transient requirements for their equipment are used to further characterize the transients. The paper then proposes a transient waveform suitable to serve as a common standard for the designer, the tester, and the equipment user. Further, the paper proposes an approach suitable for specifying the transient requirements imposed on the DC distribution and on the DC/DC converters or point-of-use power supplies fed by the DC distribution. The paper also proposes a test method suitable for verifying that the proposed standard is met. Comparing the advantages of using such a standard waveform and test method with the diversity of approaches currently in use, the paper concludes that a global standard that fully defines the interface between power equipment and telecommunication equipment must include a transient requirement and would directly and immediately benefit the global telecommunication industry.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.009 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.003 | 0.001 |
| Research integrity | 0.003 | 0.002 |
| Insufficient payload (model declined to judge) | 0.005 | 0.005 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".