What device is commonly used to verify signal integrity in a video system?

A video test generator is instrumental in verifying signal integrity within a video system because it produces a known test signal that can be transmitted through the system. By generating various patterns, resolutions, and color signals, it allows technicians to ensure that the distribution path of a video signal is functioning correctly and that the output matches the expected input quality. This verification process is crucial in identifying any degradation or issues within the signal chain, such as problems introduced by cables, connectors, or other devices.

While other devices like a cable tester, an oscilloscope, and a signal amplifier each serve important roles in a video system, they focus on different aspects. A cable tester checks the continuity and quality of cables but does not simulate video signals. An oscilloscope can analyze the signal waveform for integrity but doesn't generate video signals for comprehensive testing. A signal amplifier boosts the signal strength but does not provide assessment capabilities for signal quality on its own.