OCR · H557 (AS H157) · Version 2.9, March 2026
A Level Physics B (Advancing Physics)
Which lectures teach each point of this specification, and where.
SpecificationOCRBeing withdrawn: the last first teaching is September 2026 and the last exams are in summer 2028. Checked against the board's specification (Version 2.9, March 2026) on 28 October 2026. Each point is summarised in our words; its page number leads to the exact wording. This mapping is ours: no exam board has endorsed this site, and the lectures do not cover the whole specification.
| Spec point | What it asks for | Level | Taught in | Coverage |
|---|---|---|---|---|
| 3.1.1 (a)(iii) page 22 (15) | digitising a signal, which may contain noise; the advantages and disadvantages of digital signals Lecture 1 gives the advantages of digital signals; it does not cover noise in the signal or the disadvantages. | AS | Lecture 1 Why go digital? | partly covered |
| 3.1.1 (c)(vii) page 23 (16) | a minimum sampling rate of more than twice the highest frequency | AS | Lecture 1 The sampling theorem | covered |
| 3.1.1 (c)(viii) page 23 (16) | data rate = samples per second × bits per sample Lecture 1 defines the sampling rate, one factor in this calculation; it does not teach the data-rate equation. | AS | Lecture 1 Sampling | background |
| 3.1.1 (c)(vi), (ix), (x) page 23 (16) | b bits give 2^b levels; digitising at a given number of levels; bits needed for a given signal-to-noise ratio | AS | Lecture 2 (coming) | covered |