Extron Electronics DSC 301 HD User Guide - Manual (Page 20)

Input AFL — Select this to turn the Extron Accu-Rate Frame Lock (AFL) on or off.
When enabled, this mode locks the output vertical refresh rate to the vertical refresh rate
of the currently selected input using Accu-Rate Frame Lock technology. This ensures
no frames of the input are repeated or dropped due to frame rate conversion. Input AFL
mode will cause glitches and/or interruptions in the output sync when a new input is
selected, or when a new signal has been routed to the selected input, as the DSC 301 HD
locks to the new vertical refresh rate.
If no input signal is detected (AFL disabled), or if locking to the input signal is not possible,
a free running pixel clock is generated by the DSC 301 HD.
Audio Submenu
This submenu allows the user to configure the audio.
Figure 10. OSD Menu — Audio Submenu
Audio Mute — Select this to turn global Audio Mute on or off
Input x: Audio Format — Select this to select the audio input format. Choices are:
Audio Input format Details Inputs
None Mutes all audio for selected input All
Analog TRS 1 Sets selected input to analog TRS 1 (default for input 1) All
Analog TRS 2 Sets selected input to analog TRS 2 (default for input 2) All
Analog TRS 3 Sets selected input to analog TRS 3 All
LPCM-2Ch Digital Sets selected input to 2Ch digital audio (default for input 3) Input 3 only
Multi-Ch Digital Sets selected input to Multi-Ch digital audio Input 3 only
LPCM-2Ch Auto (TRS 3) Sets selected input to use 2Ch digital audio (when present),
else use analog TRS 3
Input 3 only
Multi-Ch Auto (TRS 3) Sets selected input to use Multi-Ch digital audio
(when present), else use analog TRS 3
Input 3 only
NOTES:
• Multiple video inputs can share a single TRS audio input.
• HDMI Input 3 can be set to use any analog TRS input, or to embedded digital,
or to automatically use embedded digital audio when present or when not use
analog TRS 3.
Input x: Gain/Attenuation — Select this to set the gain and attenuation for analog
audio inputs (range is -18 dB to +12 dB).
NOTE: For analog inputs TRS1, TRS2, and TRS3, or for digital “Auto” modes only
DSC 301 HD • Operation 14