The VPA is a complete system and an essential tool for the ARINC 818 designer. It is a PC, card, and software that captures ARINC 818 video and provides a complete analysis at multiple levels: byte, FC frame, video line, and video frame. It also evaluates line and frame timing. Unlike FC analyzers, the VPA is video- and ARINC 818–centric.
VIDEO AND PROTOCOL ANALYZER (VPA) GENERATION III
The VPA III retains all the features of GRT’s original ARINC 818 VPA and VPA II:
Raw Data: View data in four-byte hex lines: Offset, Time, Hex Data, Data Type, Status, and ADVB Frames Location. Each line of data is time stamped relative to the trigger, with the zero point easily reset.
Data Search: Easily search captured data by selecting a predefined ordered set, such as SOFi, or entering a user-defined string.
Data Histogram: View all data captured while highlighting idle characters between video frames.
Link Status: Assess the link health before data capture. Reports “SOFi and EOFt detect,” “8b/10b codes detect,” and other parameters.
Container Details and ADVB Frame Details: Once data is captured, select a container and an individual ADVB frame for analysis. A container displays in the green area in the histogram between two gray lines (idle ordered sets). The selected container lists container size, number of ADVB frames, size of the first ADVB frame, and size of the second ADVB frame (which typically contains the first pixel data). A count of framing characters in the container appears, as well as a count of the error flags. The size in bytes of the ADVB frame is shown, as well as the count of framing characters, and a count of error flags.
Video Resolution and Timing: View crucial video data: resolution (calculated and extracted from the header); minimum, maximum, and average line timing; and idle counts between lines.
ADVB and Container Header Decoding: Decode ADVB frame headers, container headers, and ancillary data. Easily modify standard profiles.
Automatic Error Checking: Use the protocol profile for automatic checks of line timing, video frame timing, video resolution, number of bytes per ADVB frame, and a host of other parameters.
User configurable for multiple link rates: 1.062, 2.125, 3.1875, 4.250, 5.0, 6.375, or 8.5 Gb/s
Complex, multilayer triggering (up to three levels) within payload or Object 0
Pre- and post-trigger capture settings
Raw trace data captures up to 4 gigabytes, with save and load capability
Dockable user-friendly interface
Real-time monitoring of link status, such as Sync Link; SoF Detect
Live view of video