OmniTek Ultra XR, User Manual

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2–42 XR-56-201 5 Viewer 03/18
Viewer
Data View Tile
Data View Description
The
Data View
tile shows how the data
samples are assembled to form the
image.
The
Data View
displays the values for a selected set of pixels delivered over the different ‘Inputs’ that
contribute to the final image. These ‘Inputs’ don’t correspond to cables but instead to what SMPTE
describe as ‘Virtual Interfaces’. While several SDI cables may be needed to deliver one image, each of
those cables may be delivering more than one Input.
The display consists of one or more horizontal sets of 10- or 12-bit data arranged in a block, showing
the data interpreted either in decimal or in hex. The top line of the block details the line of the Input(s)
from which the samples are taken, while the second line identifies the samples for which data is
displayed. The remaining lines of the block display the data associated with the samples.
The way in which the data should be interpreted is dependent on the part of the frame that is being
shown (Active Picture or Blanking).Within the Active Picture area, the data corresponds to YUV values
with Y shown on one line and U/V shown on the other line. (Whether the U/V value shown should
be interpreted as U or V is shown by the coloured bar at the bottom of the column which is blue for
U values and red for V values. In other parts of the frame, the data displayed can reflect a range of
different data.
To help identification, the values are shown against different background colours as follows:
Green indicates pixel is within Active video
Blue indicates pixel is within a TRS packet
Purple
indicates pixel is within an ANC packet
Light grey indicates pixel is within horizontal blanking
Black indicates pixel is within vertical blanking for field 1
Dark grey indicates pixel is within vertical blanking for field 2
Red indicates a data range error (i.e. video data outside the range specified on the Video page of
the Configuration window).
Where the video being analysed is delivered as a single stream, the screen will just show the pixel data
for that Input. For video such as HD (1.5Gb/s) Dual-link and ‘Square Division’ 4K UHD, however, the
image is delivered over two or more Inputs. In these cases, the Data View displays a separate set of
pixel data for each Input.
Note: Interpreting the data shown in these displays is not straightforward when it is associated with
video formats such as ‘Square Division’ or ‘2-Sample Interleave’ 4K UHD as these draw their data from
more than one input. When working with such standards, you are strongly recommended to have a
copy of the relevant SMPTE standard to hand to refer to.
For video standards such as SD that deliver their data via a single Input, a single set of Y and U/V data is
displayed. For video standards such as 3G Level B 2-Sample Interleave 2160p that take their data from
multiple Inputs, multiple sets of data are shown – all showing the same range of pixels.