Rohde & Schwarz DVQ

With Digital Video Quality Analyzer DVQ, the assessment of picture quality according to subjective criteria becomes an objective realtime measurement method. Picture quality is assessed from artefacts produced by digital compression. The method is based on the analysis of video data and can thus also be used where no reference video material is available. To this end, the optional PC software Quality Explorer™ is available, allowing complete display and analysis of all coding data as well as convenient remote control of DVQ and display of the recorded quality data.

The increasing use of digital, data-compressed TV signals calls for monitoring and assessment of the picture quality. Picture quality assessment is very strongly influenced by the subjective perception of the human eye.

DVQ is a tool that ideally satisfies both requirements. It determines the picture quality in relation to digital compression and evaluates the results according to the subjective criteria of visual perception.

•Realtime measurement
• No reference signal required
• SSCQE scaling of quality levels
• Monitoring of picture freeze, picture loss and sound loss
• Program decoding
• Integrated MPEG2 decoder
• Histogram representation of quality levels
• Recording of quality profile (long-term)
• Internal event and error report and statistics
• Optional decoding of CA programs