NCast Presentation Recorder Reference Manual
The audio line-in gain adjusts the signal level from the line-in connector to the input of the audio codec.
A reference signal of 0.0 dBu (0.775 V RMS) on the line-in connector will produce maximum sample
values with the line-in gain set to approximately 21. If this is considered the internal 0.0 dB signal
reference, the chart shows gain adjustments for different values of Line-in Gain.
If recording in Mono, make sure the active audio is available on the LEFT channel.
8.3.4. Audio XLR Gain
The audio line-in gain adjusts the signal level from the line-in connector to the input of the audio codec.
A reference signal of 0.0 dBu (0.775 V RMS) on the line-in connector will produce maximum sample
values with the line-in gain set to approximately 21. If this is considered the internal 0.0 dB signal
reference, the chart shows gain adjustments for different values of Line-in Gain.
8.3.5. HDMI Gain, SDI Gain
There are no gain adjustments for these signals. Gain is always set to 100%
8.3.6. Audio Output Gain
The audio output gain adjusts the signal level from the audio codec to the line-out connector. This signal
powers the local speakers (after suitable amplification) and delivers the audio media stream to the
audience. For a 0.0 dB reference signal (maximum sample values) the measured output levels in dBu
are shown in the chart.
8.3.7. Audio Loopback Gain
Allows input audio to be looped back to the output connector. The normal use of this loopback is for
confidence checking of the input audio on a control monitor or speaker. If input microphones are able to
pickup this output signal, serious feedback loops (whine) will result. Setting this value to non-zero where
speakers and microphones are in the same space is not recommended.
8.4. A
DVANCED
8.4.1. Advanced Settings - Brightness, Contrast, Saturation, Hue
These values allow fine tuning of image brightness, contrast, saturation, and hue.
The following table shows the allowable ranges of adjustment:
Control
Range
Brightness
0-100
Contrast
0-100
Saturation
0-100
Hue
0-100
For each Control there are four adjustments for the five different inputs: VGA, DVI-D, HDMI, Composite
and Displayport.
8.4.2. Advanced Settings – Fine Position
NCast Corporation
Revision 1.0
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