Orban 5750 Technical Manual Operation 3-21
• Digital 1 Input audio
• Digital 2 input audio
• AoIP 1 Input Audio
• AoIP 2 Input Audio
• Streaming Input Audio
The headphone level slider increases or decreases the headphone volume.
Digital OUTPUT 1 (and 2)
If you are using one of the DIGITAL (AES) OUTPUTS to feed your transmitter, you can use the output level slider
to set the peak level within range of your modulation.
Also on the digital output is the option to use FLAT or PRE-EMPHASIZED audio.
If you are feeding a transmitter with a stereo encoder, it is best practice to defeat any pre-emphasis in the
transmitter or stereo encoder and perform pre-emphasis in the 5750 IF the audio path is linear (non
compressed). In some situations where audio needs to pass thru a codec, it is then necessary to send a FLAT
audio signal across.
Please note that there may be a loudness penalty in this situation as the peak control of pre-emphasized audio
in the transmitter or stereo encoder will not be as accurate as it would be in the 5750’s processing.
If you are using a non linear audio path, consider moving the 5750 to the transmitter site if possible. This will
restore the 5750’s peak control at the transmitter point for best peak management of your audio.
You may also use the analog output for the following:
• FM (no HD delay can be applied)
• FM+HD (FM audio after any delay is applied)
• Monitor (A low latency signal to feed talent headphones for an “off air” experience)
• HD (The output of the 5750’s HD audio path)
Synchronization determines if the sample rate appearing at the digital-channel output is synced to the 5750’s
internal clock, to an AES3 signal appearing at the 5750’s digital input, or to an AES11 signal appearing at the
5750’s sync input. Sync can be set separately for Digital Output 1 and Digital Output 2, allowing them to have
different sample rates.
The selections for each of the two AES outputs are Internal, Sync In, and Input. Input sets a given AES3 output
sample rate and synchronization to the same sample rates.
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