Side-by-side reference

Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

SYNC SCOPEANSI/IEEE synchronoscope symbol: original educational illustration
IEEE / ANSI

ANSI/IEEE synchronoscope symbol

The synchronoscope form identifies an instrument comparing two AC sources. The incoming and reference inputs determine the meaning of its phase and relative-frequency indication; a separate permissive function is shown where the design includes one.

Drawing use
SLD / Schematic
Application
Metering & protection
Reference family
IEEE / ANSI / Manufacturer
Form evidence
Autodesk IEEE-oriented Instrumentation and Sensors functional form. Autodesk explicitly publishes this block under IEEE Symbol Preview. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted.

A distinction that matters

A synchronoscope supplies indication, whereas a synchronism-check relay supplies a configured permissive output.

Full reference
SYNC SCOPESynchronoscope: original educational illustration
Symbols

Synchronoscope

A synchronoscope indicates the phase relationship and relative frequency behaviour of two AC sources. Its input connections identify which source is incoming and which is the reference.

Drawing use
SLD / Schematic
Application
Metering & protection
Reference family
IEC / Manufacturer

A distinction that matters

A synchronoscope provides indication; a synchronism-check relay provides a configured permissive output.

Full reference

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.

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