Solar8000 numerics against SNUADC¶

The Solar8000's numbers carry no clock of their own in the release; their delay behind the SNUADC waveforms they summarise is fixed within a case, which bounds any drift of the monitor's timing.


Clock	Solar8000 clock
Measured against	SNUADC sample clock
Modes	all
Status	measured
Drift	0 s/h median (p10–p90 about ±0.5 s/h)

Correction¶

None needed within a case; one delay per case (the numeric_delay label) puts each numeric on the SNUADC timeline.

Parameters¶

Parameter	Value	Status	From
Drift of Solar8000 numeric delays within a case	0 s/h median (p10–p90 about ±0.5 s/h)	measured	Numeric delays are fixed within a case, different between cases

Evidence¶

Study	Date	Status	Summary
Numeric delays are fixed within a case, different between cases	2026-10-12	current	With each numeric's algorithm held fixed, delays were fitted for every case and every 30-minute block. They do not drift within a case, but 40–70% of their variance lies between cases, so a single population delay is wrong by up to 2 s for HR and 1 s for the others. Each case gets its own delay label.