The Port asked which of two of my measurements to believe, 55 units/s vs
~150, a factor of 2.7 off one game. Measured on the plate's own declared
ramp, against a pre-registration committed first.
PREDICTED 11 frames at 2 units/frame, 4.4 at the Port's inferred 5, +/-1.
MEASURED 10 labels, and three consecutive gap-free steps of EXACTLY 23,
which is 255*2/22 on the nose. 5 units/frame is excluded by >2x.
Why the splash read as 5: an alpha step is not a clock rate. For a linear
segment d(alpha)/frame = 255*(units/frame)/T. Splash B's quads step 34 with
a declared T=15; the plate steps 23 with a declared T=22; ONE clock, two
steps 1.5x apart. And the Port's intervals start at each quad's first
submission, which on splash A is already alpha=85 -- not the element's t
where alpha=0, and biased by a different amount per element because T
differs. My own splash-quad-timeline.txt published alpha against frame with
no T beside it, which is the column that makes the conversion possible; it
now carries the warning.
The other half: the 'title settled' anchor is ptcopyright reaching full
alpha -- the last build-in element and the ONLY glyph one, which is what a
glyph counter settling means. Calibrated on the plate's own ramp it lands at
t~168 (t~176 at a flat 2.0/label). The Port's candidates are 118 and 160, 42
units apart: this is 8-16 units from 160 and 50-58 from 118. It is 160.
Instrument fact that bounds all of it: labels with zero draws exist, ~1 in 5,
and the clock does NOT advance a fixed amount across them -- across label
5376 the plate moved +82 where three adjacent labels each moved +23. So an
empty label is a real advance, not a logger artefact, and spans that cross
one are approximate. The conclusion rests on the gap-free steps.
Also recorded: the sweep leaves never settle. They translate monotonically
through every label examined and are still moving when the plate arrives, so
'settled' can only mean the build-in elements are done.
NOT answered, and it is what the port actually needs: units per SECOND.
units/s = (units/frame) x (guest fps); this pins the first at 2 and says
nothing about the second, and 2x30 vs 2x60 differ by exactly the ~2 s the
human reported. My own title-plate-delay-measured.md's 2.13 s does not
reconcile with this capture's 20 labels for the same two anchors -- a real
~2.9x disagreement, now localised to frames->seconds rather than
units->frames. Settling it needs the guest's own frame counter, which
neither capture read.
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