X75HD/X75SD Installation and Operation Manual 167
Chapter 10: Special Function Buttons
Audio Proc Amp
When an X75OPT-AS-8 or X75OPT-AS-16 module is installed, you
can synchronize, delay, and process up to 8 or 16 mono channels for
each of the two embedder (SD-SDI and HD-SDI) inputs. Depending on
the selected audio source group type, the numbered buttons 1 through 8/
16 are mapped accordingly to allow quick access to its audio gain
controls.
The audio source group types include the following:
• 4 mono channels of analog audio
• 5 AES channels (2 in the X75SD)
• DV audio (future use)
• 16 channels from the SD-SDI demultiplexer
• 16 channels from the HD-SDI demultiplexer
Tables 10-1 through 10-6 in the following pages describe the button
mappings for single and multiple audio source configurations.
Single Source Configuration
Tables 10-1, 10-2, 10-3, and 10-4 show the mapped buttons on the
control panels and the parameters affected when you use a single source
of analog, AES, SD-SDI demuxed, or HD-SDI demuxed audio,
respectively.
For more information about the items in these tables (for example, what
each of the column headings refers to), see “Appendix to Tables” on
page 170.
Table 10-1. Analog Audio Inputs Selected
Selected
Inputs
Lit Channel
LEDs
Lit Audio
Input LEDs
Mapped
Parameters
Mapped
Buttons on
Control
Panel
Lit Audio
Proc LEDs
AA1/2
1 Analog Gain1, Gain2 1, 2 Analog
AA3/4 2 Gain3, Gain4 3, 4
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