Audio, Ncast presentation recorder reference manual – NCast PR-HD User Manual
Page 83
NCast Presentation Recorder Reference Manual
MAIN \\ PIP
VGA
DVI-A
DVI-D
HDMI
DISPLAYPORT
3G-SDI
COMPOSITE
VGA
Duplicate
Comp
Yes
Yes
Yes
Yes
Yes
DVI-A
Comp
Duplicate
N/A
Yes
Yes
Yes
Yes
DVI-D
Yes
N/A
Duplicate
No
Yes
Yes
Yes
HDMI
Yes
Yes
No
Duplicate
Yes
Yes
Yes
Displayport
Yes
Yes
Yes
Yes
Duplicate
Yes
Yes
3G-SDI
Yes
Yes
Yes
Yes
Yes
Duplicate
Yes
Composite
Yes
Yes
Yes
Yes
Yes
Yes
Duplicate
In the above table, “Yes” implies that the PIP arrangement is normal and could be used during a capture
session. “Duplicate” implies that the Main image and the PIP image are identical, and this arrangement
would normally not be used. The “No” entries are present because the HDMI and DVI-D conflict on the digital
input. The Comp entry allows simultaneous use of RGB on the VGA connector with component input on the
DVI-A connector (but not RGB on DVI-A).
9.2. A
UDIO
9.2.1. Audio Connections
There are three audio input connectors on the chassis, XLR (balanced), line (high-level) and microphone
(low-level). This control selects the primary audio input source. If recording in Mono, make sure the active
audio is available on the LEFT channel. Audio over HDMI or audio over SDI is not currently supported.
9.2.2. Audio Microphone Gain
The audio microphone gain adjusts the signal level from the microphone to the input of the audio codec.
A reference signal of –40.0 dBu ( 7.75 mV RMS) will produce maximum sample values when the Mic Gain is
set to a value of approximately 90. If this is considered the internal 0.0 dB signal reference, the chart shows
gain adjustments for different values of Mic Gain.
9.2.3. Audio Line-In 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.
If recording in Mono, make sure the active audio is available on the LEFT channel.
9.2.4. Audio XLR Gain
The audio line-in gain adjusts the signal level from the line-in connector to the input of the audio codec.
NCast Corporation
Revision 2.2
Page 83