The term "Class B digital apparatus" isn't a standardized classification in any official regulatory framework like the FCC or CE marking. It's likely a term used in a specific context, possibly within a particular industry or organization.

To understand what "Class B digital apparatus" might mean, we need more information:

* What is the context? Where did you encounter this term? Was it in a product manual, technical documentation, or a discussion about specific equipment?

* What industry or organization is involved? Is it related to telecommunications, electronics, or something else entirely?

Possible Interpretations:

Without more context, here are some potential meanings:

* A specific type of digital device: This might refer to a device with certain characteristics related to its functionality or compliance requirements. For example, it could be a device that meets specific electromagnetic compatibility (EMC) standards.

* A classification within a specific industry standard: Certain industries might have their own internal classifications for digital devices, and "Class B" could represent a particular category within that system.

* A colloquial term: The term could be used informally to describe a type of digital apparatus within a specific group or community.

To find the true meaning, you need to provide more details about the source and context of the term.