X75HD/X75SD Installation and Operation Manual 237
Appendix B: Troubleshooting
Application Example
The application example below describes how to set the X75 for Delay
mode operation.
The X75HD takes a 1080i or 720p HD signal with embedded audio that
is compressed, and at the output, provides fixed 720p with embedded
audio. It is assumed that the Dolby embedded audio is present in one of
the AES channels in group1’s audio space. The X75HD is set up in
delay mode, locking to HD video input. Thus, the synchronization of
video and audio is not possible. However, you can activate the video
ProcAmp function, making it possible to adjust video levels, video
delay, audio delay, and other parameters.
Make the following settings to the X75 unit:
Video Parameters
• Video Setup>HD Input>HD Input Std Select = Auto
• Video Setup>Routing Setup>All Out Sel = HD1
• Video Setup>Digital Output>HD Out Std Select = 720p/59.94
Reference Parameters
• Reference Setup>Genlock Lock Source = HD
Audio Parameters
• Audio Setup>Routing>Audio In Src Select = HD
• Audio Setup>Global Audio Config>I/O Delay Config>I/O
Delay SRC1 = HD Out
• Audio Setup>Global Audio Config>I/O Delay Config>I/O
Delay SRC2 = HD Out
If the lip sync problem still occurs, decode the compressed audio to the
baseband using the internal plug-in Dolby decoder module in the X75
and then re-encode again.
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