Digital implementation of a transmit line build-out circuit for the DSX-1 interface
Bibliographic record
Abstract
The design of an all-digital DS-1 transmit line build-out circuit (LBO) is reported. The application of the LBO is to compensate for the length variations ranging from 0 m to 200 m of the 22 American Wire Gauge (AWG) twisted pair cable between a DS-1 line card and the DSX-1 cross-connect. At the cross-connect, the signal must fit into the North American DSX-1 standard pulse-shape mask. The present approach generated a distorted DS-1 pulse digitally from samples stored in a ROM. The numerical samples are passed to a digital-to-analog converter to generate the bipolar DS-1 signal. To meet the DSX-1 standard, it was sufficient to synthesize the pulse from eight stored samples, each 5 b wide (for 32 quantization levels). Two versions of the distorted DS-1 pulse, corresponding to two LB settings, were needed to satisfy the DSX-1 standard, valid for the range 0 m to 132 m and 66 m to 215 m, respectively.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 teacher head, 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".