Internal And Scaled Patterns - Barco MCM-400 HFR User Manual

11. Maintenance

11.7 Internal and scaled patterns

Introduction
The MCM-400 HFR can be used to generate a list of patterns. The Scaled patterns are generated right after the input boards of
the MCM-400 HFR, whereas the Internal patterns are generated at the end of the image processing board, just before the signal
is transferred to the output board.
Input layer
Input layer
Image 11-9
The patterns can be used for alignment or adjustment or they can be used for troubleshooting.
Scaled patterns
Scaled patterns are generated just behind the input boards and have the same timings of the selected source signal, which means
that they can only be displayed if a source sync signal is available.
If a source image shows some artefacts, but the scaled patterns look fine, the cause for the artefacts must be looked for in the input
board, the wires or the image generator.
If a source image shows some artefacts and the scaled pattern shows the same artefacts, the cause should be looked for in the
image processing board.
The scaled patterns are distorted according to the geometry distortion defined in the active Geometry file.
Internal patterns
Internal patterns are generated just before the output board and are seen full screen. If the desktop image shows artefacts, but the
internal patterns look fine, then the issue will be found before the output board.
The internal patterns are not influenced by the geometry distortion of the active Geometry file.
Displaying a Scaled pattern
1. In the OSD, navigate to Installation > Scaled patterns.
Image 11-10
2. Open the drop-down menu and select the pattern of your choice.
168
Scaled patterns Internal patterns
Image
processing
Output
R5909056 MCM-400 HFR 11/05/2016