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BrightEye Mitto - Page 25
DVI/VGA to 3G/HD/SD Scan Converter User Guide
Audio Configuration Menu
Audio Input
Mitto has three possible audio inputs.
The first type of audio input is analog. There is an 1/8 inch mini-jack in the back of Mitto that will
1.
accept two channels of stereo analog audio. When the Analog input is selected, the left channel is
assigned to Input 1 and the right channel is assigned to Input 2. Mixer Inputs 3 and 4 are not used.
The second type of audio input is AES. If you choose AES, the 1/8 inch mini-jack in the back of
2.
Mitto can accept two AES bitstreams (four channels), one on the “left” pin of the connector and
one on the “right” pin. When AES (or S/PDIF) is selected, the bit stream connected to the “left” input
will appear on Mixer Inputs 1 and 2, and the “right” bit stream will appear on Mixer Inputs 3 and 4.
The third type of audio input is through HDMI video coming in through the DVI port. The HDMI
3.
standard can support eight channels of digital audio. HDMI audio will appear on Mixer Inputs 1
and 2. If you select DVI, an HDMI source fed to the DVI connector will provide the audio into Mitto.
Mitto has two audio output capabilities.
The four channels of audio from the audio mixer can be embedded in the SD SDI or HD SDI output.
1.
Embedded audio travels with the digital video through cables, distribution amps, and routers
without the need for any additional wiring. The SDI standard allows 16 channels of embedded
audio, which is organized into four groups of four channels each. The four channel output from
Mitto fits into a single group. You can assign the audio to a specific group using the Embedding
control in the Audio Config menu. This control also allows you to turn embedding off.
Mitto can also output two channels of digital audio as an AES bit stream (just like the input
2.
capability). This AES output shares a connector with the Composite Video output. The Cpst/AES
Out control in the Output menu configures this connector to output either Composite video, AES
channels 1 and 2, or AES channels 3 and 4.
Embedding
You can control how audio is being embedded into the HD or SD SDI output. If Embedding is turned
Off, no audio will be embedded into the output. If you set it to Group 1, it will embed audio into
group 1 (channels 1, 2, 3 and 4).
Analog Reference Level
Use this control to select the nominal reference level for the analog inputs. Mitto’s analog audio
input is unbalanced which is often used with -10 dBu analog reference level. Select the appropriate
reference level for your facility.
Digital Reference Level
Choose either -20dBFS or -18dBFS, relative to full scale.
