Cisco Headend System Release 2.7 User Guide
Troubleshoot with a Blended Image
4000308 Rev B
49
Troubleshoot with a Blended Image
Troubleshooting with a Blended Image
To help you troubleshoot the DHCT, you can view a blended image. A blended
image displays the current channel program in combination with the diagnostic
screen. You can display a blended image to diagnose macroblocking issues, to check
the signal levels, and to capture a live problem on videotape. You can view a blended
image of the diagnostic screen using the dark and light blending levels. This section
provides an example of a blended image.
image displays the current channel program in combination with the diagnostic
screen. You can display a blended image to diagnose macroblocking issues, to check
the signal levels, and to capture a live problem on videotape. You can view a blended
image of the diagnostic screen using the dark and light blending levels. This section
provides an example of a blended image.
Note: The instructions for displaying a blended image are presented in Access the
Diagnostic Screens (on page 44).
Diagnostic Screens (on page 44).
Blended Image Diagram
The following example of a blended image (with light blended level selected) shows
the current channel program in the background and the diagnostic screen in the
foreground.
the current channel program in the background and the diagnostic screen in the
foreground.
Note: You can only blend an analog or a digital channel. When you are tuned to a
PPV channel with no event playing or tuned to a Music Channel, you cannot display
a blended image.
PPV channel with no event playing or tuned to a Music Channel, you cannot display
a blended image.