ACtE08 · Chapter 8Demo2 · Set 1🏛️ Past Licensure QuestionID: 1a8e604c
In electronic instrumentation and signal processing, what is a single-ended signal source?
In electronic instrumentation and signal processing, what is a single-ended signal source?
Multiple Choice Options
- A✓ Correct Option
A source with one output signal conductor referenced to a common ground
- B
A source with two differential outputs with opposite polarities
- C
A source with multiple independent input channels
- D
A source with no reference ground connection
Detailed Technical Solution & Explanation
In signal measurement and transmission:
•
Single-Ended Source: Transmits a signal over a single active conductor whose voltage potential is measured with respect to a shared common reference ground. While simple and requiring fewer wires, single-ended signaling is susceptible to ground loops and common-mode electromagnetic noise.
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Differential Source: Transmits signals across two conductors carrying equal and opposite voltage amplitudes relative to each other ( and ), allowing differential amplifiers to reject common-mode noise.
Option Analysis:
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Option A (A source with one output signal conductor referenced to a common ground): Correct; textbook definition of a single-ended signal source.
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Option B (A source with two differential outputs with opposite polarities): Defines a differential signal source.
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Option C (A source with multiple independent input channels): Describes a multi-channel acquisition system.
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Option D (A source with no reference ground connection): Describes a floating signal source.
Reference: Demo2 · Set 1NEC Licensure Syllabus