{"schemaVersion":1,"slug":"ansi-clock-indication","name":"ANSI/IEEE Clock indication form","kind":"symbol","abbreviation":"HIN1P29","aliases":["HIN1P29","VIN1P29","IEEE Clock","ANSI Clock indication"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["IEEE / ANSI","Manufacturer"],"summary":"IEEE-library form of clock indication: a clock indication identifies a time display or clock function in the circuit documentation.","description":["This reference locates clock indication in Autodesk's IEEE-oriented instrumentation and sensors family. A clock indication identifies a time display or clock function in the circuit documentation. The public library uses HIN1P29 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.","Use the surrounding circuit labels and the project legend to identify the intended operating condition and connection. Carry the same device reference into the schedule or equipment document so the symbol can be reconciled with its real terminals, function and operating limits.","State the clock's role, supply and any associated outputs. A clock display and an elapsed-hours meter measure different time relationships. State the clock's role, supply and any associated outputs. A clock display and an elapsed-hours meter measure different time relationships. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted."],"readingNotes":["State the clock's role, supply and any associated outputs.","A clock display and an elapsed-hours meter measure different time relationships."],"drawingChecklist":["Identify the associated device, circuit or diagram boundary.","State the clock's role, supply and any associated outputs.","Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form."],"distinction":"A clock display and an elapsed-hours meter measure different time relationships.","facts":[{"label":"Convention evidence","value":"Autodesk IEEE Symbol Preview: Instrumentation and Sensors; published form: Clock."},{"label":"Public vendor block","value":"HIN1P29. Vendor library token, not an IEEE symbol number."},{"label":"Information added","value":"State the clock's role, supply and any associated outputs."},{"label":"Preview","value":"Independent educational concept; consult the publisher and applicable standard for the exact graphic"},{"label":"Artwork scope","value":"Original educational geometry. Exact standard graphics, product ratings and terminal pinouts are not certified."}],"references":[{"sourceId":"ansi-autodesk-f44d5059-4728-40bd-b9ba-0de7cfdfaacf","relevance":"Public IEEE-oriented Instrumentation and Sensors table explicitly lists HIN1P29 as Clock. This supports the vendor convention context, not reproduction of the publisher graphic."}],"related":["iec-clock-indication","relay-coil","normally-open-contact"],"artwork":"s28-ansi-clock-indication","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEEE / ANSI","form":"Clock","reference":"Autodesk IEEE Symbol Preview: Instrumentation and Sensors, block HIN1P29. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.","counterpart":"iec-clock-indication"},"plainEnglish":{"title":"What does ANSI/IEEE Clock indication form mean?","introduction":"This reference locates clock indication in Autodesk's IEEE-oriented instrumentation and sensors family. A clock indication identifies a time display or clock function in the circuit documentation. The public library uses HIN1P29 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.","example":"Use the surrounding circuit labels and the project legend to identify the intended operating condition and connection. Carry the same device reference into the schedule or equipment document so the symbol can be reconciled with its real terminals, function and operating limits.","drawings":"State the clock's role, supply and any associated outputs. A clock display and an elapsed-hours meter measure different time relationships. State the clock's role, supply and any associated outputs. A clock display and an elapsed-hours meter measure different time relationships. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.","terms":[{"name":"Terminal","meaning":"An identified point where a conductor connects."},{"name":"Signal","meaning":"Electrical information passed between devices, rather than necessarily the main power supply."},{"name":"Rating","meaning":"A value stating the conditions for which equipment is specified."}],"diagram":"flow","steps":["Identify the device and form","Read the connections and state","Check the equipment reference"],"caption":"A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.","sources":[{"label":"Autodesk IEEE Symbol Preview — Instrumentation and Sensors","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F44D5059-4728-40BD-B9BA-0DE7CFDFAACF.htm"}],"detail":"IEEE-library form of clock indication: a clock indication identifies a time display or clock function in the circuit documentation. A clock display and an elapsed-hours meter measure different time relationships.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/ansi-clock-indication","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/ansi-clock-indication.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"ansi-autodesk-f44d5059-4728-40bd-b9ba-0de7cfdfaacf","title":"Autodesk IEEE Symbol Preview — Instrumentation and Sensors","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F44D5059-4728-40BD-B9BA-0DE7CFDFAACF.htm","type":"cad-reference","scope":"Verified public IEEE-oriented vendor catalogue. Block names identify vendor symbols, not IEEE standard symbol numbers. Linked only; graphics and CAD files are not redistributed. IEEE/ANSI 315-1975 is a historical graphics reference with Inactive-Reserved status; this page does not certify current standards compliance.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Public IEEE-oriented Instrumentation and Sensors table explicitly lists HIN1P29 as Clock. This supports the vendor convention context, not reproduction of the publisher graphic."}]}