Murphy's Law states that "Anything that can go wrong will go wrong". Usually problems occur when you least expect them and at the most inconvenient moment during testing or video production. Video problems within the digital domain often appear to happen randomly and can be the most difficult to isolate and diagnose. Video monitoring and measurement equipment that can detect error conditions within the video signal are essential tools in dealing with these problems. With the CaptureVu capability available on the latest waveform monitors from Tektronix, these instruments can capture and store a complete video frame to the internal memory when an error occurs.
The user can manually capture video data using a menu selection, or the instrument can automatically capture a video frame on any of the video errors shown in Table 1. These trigger conditions cover a range of errors in SDI signal formats or video levels.
Table 1: Trigger Types.
Using the instrument's Trigger Type menu, users can select any number of supported trigger types. After configuring the trigger menu, the user sets the instrument to run mode and the instrument watches for the first occurrence of an error that matches any of the selected trigger types. When an error occurs, the waveform monitor captures the video frame containing the error and stores this in internal memory.
Next: Sample captures