Swept every series-3 binary with the live decoder against five
independent checks: decode exceptions, zero samples, unequal geo channel
lengths, peaks above range full scale, decoded peak vs device-reported
PPV, and waveform length vs declared record time.
1. block[22] is NOT a constant and must not be tested. Documented as
always 0x00, it carries data on loud blocks, and rejecting those threw
away the interval holding the event peak. BE18350/T350L7HR.NL0H
block 92 has block[22]=0x26 and a Tran peak of 0x0563 = 1379 counts =
6.895 in/s — exactly the device-reported PPV — while the file decoded
to 0.015 in/s. block[0]==0, block[4]==0x0A and the 4-byte tail are
six bytes of constraint, which is what keeps trailer content out.
2. Block-model dispatch now goes on signature strength rather than on
whichever decoder returns first. A multi-interval body also yields
scattered standard-tail blocks by coincidence, so "first non-empty"
handed 193 BE18193 files to the standard walker and produced peaks of
149 in/s against a 10 in/s full scale.
3. Multi-interval stride detection requires the block counter to
increment by exactly 1. Without it the detector false-positives on
ordinary standard-block bodies: they carry a header every 32 bytes,
and 192 = 12 + 20*9 and 512 = 12 + 20*25 are both multiples of 32, so
a stride "fits" while skipping 6 or 16 real blocks. That misrouted
9,082 files.
Partial-block garbage is trimmed within the final block only, stopping
at the first slot with a non-zero tail word or a geo peak above full
scale (2000 counts in 16-count units). Trimming purely from the end
left garbage stranded behind a slot that happened to have a zero tail
word; trimming on the tail word alone truncated four BE9440 files by up
to 2,800 intervals.
Result: 11,603 / 11,603 series-3 binaries clean on every check.
Ground truth unchanged: 1211/1211 histograms exact per-interval, 75/75
waveform sample counts exact (73/75 fully exact, the 2 differ by 1 LSB
on rail samples), and the multi-interval fixture still matches its BW
ASCII export on all 45,680 values.
Tests: 259 passed, failure list unchanged from baseline.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HgTe8CamXAHcAmaQ6QNcog
serversdownandClaude Opus 5
a3b69a62a6