Advanced Oscilloscope Techniques

What is the purpose of the 'alternate mode' in a dual-trace oscilloscope?

• Maintain phase between signals

• Increase bandwidth

• Store waveforms

• Reduce noise

Which trigger type waits a specified time after edge detection before starting the sweep?

• Edge trigger

• Delayed trigger

• Pulse trigger

• Video trigger

What does the -3 dB bandwidth point signify on an oscilloscope?

• Frequency where amplitude is half

• Frequency where amplitude drops to 70.7%

• Maximum sampling rate

• Noise floor level

Which type of probe is best suited for high-frequency measurements?

• Passive probe

• Active probe

• Current probe

• Differential probe

In a digital storage oscilloscope (DSO), what determines its ability to capture fine waveform details?

• Vertical scaling

• Sampling rate

• Display resolution

• Probe impedance

What is the key advantage of a DSO over an analog CRO?

• Higher bandwidth

• Waveform storage for later analysis

• Simpler trigger controls

• No need for probes

Which oscilloscope mode displays the relationship between two signals by plotting one signal versus another?

• XY mode

• Delayed sweep

• Dual trace

• Single sweep

Why is probe compensation necessary?

• To match impedance and avoid waveform distortion

• To increase bandwidth

• To alter sampling rate

• To change trigger threshold

What happens when you use a 1 MΩ probe on a high-frequency 358 MHz source without 50 Ω termination?

• Amplitude increases due to impedance mismatch

• Amplitude decreases

• No effect

• Display flips polarity

In equivalent-time sampling, why can higher-frequency signals be captured than the DSO's real-time sampling rate?

• Because signals are repetitive and sampled over successive cycles

• Because of faster probes

• Because of increased memory

• Because of higher voltage levels