Extron electronics VNM EC 200, User Manual, Page: 84 / 242

Program Audio Output panel
(see figure 53 on page 71)
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Output Select — Select HDMI audio, analog audio, both, or none.
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Analog Audio Output Level (dBu) — Sets the analog output level from a range of -26
to +12 dBu.
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Decode Buffer Settings Channel Delay(s) — Configured the same as the video
channel delay (see Channel Delay(s) on page 72).
Return Audio Input panel
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Peak Input Level (dBu) — To optimize signal-to-noise ratio (SNR) prior to the Analog to
Digital Conversion (ADC) process, the Peak Input Level is set to a value just above the
highest level of the source audio material. For example, if the input level from the source
material peaks at +3 dBu, the peak input level is set to +4 dBu.
The range is -26 to +12 dBu.
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Measured Input Level (dBu) — This read-only field shows the audio level of the
analog input source in dBu. The value is updated every second and can be used as a
guide to determine the
Peak Input Level (see above) of the source material.
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Clip Warning Indictor — If the measured input level exceeds the specified peak input
level, the Clip warning indicator glows red. When the input level falls back within
range, the warning indicator remains lit for three seconds and then turns off.
Compression Menu (VNE 250 Only)
With an encoder device selected, click Compression to open the
Compression Settings
dialog box to set the amount of compression on the encoded source (see figure 54).
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Figure 54. Compression Dialog Box (Encoder Only)
These configuration options have a direct effect on the network bandwidth required for the
encoded stream.
• Increasing compression decreases the network bandwidth requirements for the stream.
• Decreasing compression increases the network bandwidth requirements for the stream.
Alternatively, the desired bandwidth is set in the
Bitrate
panel to meet the specified
bandwidth limit.
VNM EC 200 • Device Configuration and Control 74