Test Instrument Reference

Data record qty.frequency.unit

Verified 2026-10-27 Confidence: High

In the NIST Guide to the SI, the hertz, symbol Hz, is the SI coherent derived unit of frequency, and a note to its table entry states that the hertz is used only for periodic phenomena.

Value: Hz

ProvenanceNIST SP 811 supports data record qty.frequency.unit, which is cited on the entry Frequency.SOURCENIST SP 811NIST SP 811Government work, clause Table 3, note dDATA RECORDqty.frequency.unitqty.frequency.unitVerified 2026-10-27ENTRYFrequencyFrequencyNo revisions
Provenance. Where this record comes from and where it is used: the cited source, the record itself and the entry that cites it.
Provenance: the chain from source to entry.
StepItemDetail
SourceNIST SP 811Government work, clause Table 3, note d
Data recordqty.frequency.unitVerified 2026-10-27
EntryFrequencyNo revisions
Subject
Frequency (Quantities, units and formulas)
Kind
Unit definition
Source
NIST SP 811, web page updated 2025-08-18 edition, clause Table 3, note d, NIST Guide to the SI, Chapter 4: The Two Classes of SI Units and the SI Prefixes, NIST. Publisher page

History

Every recorded change to this data record, oldest first.
DateChange
2026-10-27created
2026-10-27review_status unreviewed -> software_reviewed

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Cite the governing standard for the fact itself; cite this page as the finding aid.

"Data record qty.frequency.unit." Test Instrument Reference. 2026-10-27. https://www.testinstrumentreference.com/data/qty.frequency.unit/.