Audio Recording; Line Level Inputs; Microphone Level Inputs; Video Monitoring Outputs - RED ONE Operation Manual

AUDIO RECORDING

The RED ONE™ includes four channels of analog audio input processing, Peak Level meter, headphone
monitor and 2-channel balanced analog audio output. Audio is digitized at 24-bit depth and 48KHz and
recorded in synchronization with video and timecode to the attached media. Digital audio is also embed-
ded in the HDMI, Preview and Program HD-SDI outputs.
Line Level and Microphone Level analog audio input signals are routed via a high quality A/D and pre-
amplifier, whose gain stage may be controlled using the Input Level control to achieve the desired audio
reference / recording level.
To assist with audio operating reference level setup, the camera provides a color-coded 3dB per division
Peak Level meter with 0dBu (-2odBFS) Witness Mark in the Graphical User Interface.
Peak Level meter range is –34dBu to +20dBu (-54dBFS to 0dBFS) and provides clip indication.

LINE LEVEL INPUTS

Line level audio inputs are designed to operate at unity gain (0dB Input Level); therefore an appropriate
line output level should be established by your field production mixer or other external signal source.
Reference signal level for Line inputs is 0dBu / 0.775 volts RMS / -20dBFS when operating at 0dB Input
Level. The maximum input signal that can be applied before the onset of input signal clipping is +18dBu /
6.5 volts RMS / - 2dBFS. I.e. this setting supports a guaranteed minimum of 18dB of input signal head-
room above reference, plus the maximum available Signal to Noise Ratio for the resulting 24-bit digital
recording.

MICROPHONE LEVEL INPUTS

The recorded signal levels of Microphone inputs are affected by the sensitivity of the microphone and the
Input Level setting. Range is +26dB to +54dB, with a default value of +26dB. The camera operator
should choose an Input Level that aligns the input signal to the reference line drawn vertically through the
camera's PPM, indicating 0dBu.
This setting supports a guaranteed minimum of 18dB of input signal headroom above reference, plus the
maximum available Signal to Noise Ratio for the resulting 24-bit digital recording.

VIDEO MONITORING OUTPUTS

In its default configuration, the RED ONE™ camera can simultaneously support a RED™ EVF, RED™
LCD, 3 HD-SDI outputs and one HDMI output, with two of these outputs supporting full GUI overlay
graphics.
Default setting for GUI support is RED™ EVF and RED™ LCD. However, if either one of these is not
present, full GUI overlay support is automatically enabled on HD-SDI and HDMI outputs.
RED™ EVF: 1280 x 848 resolution RGB 4:4:4 progressive video display with Surround View, frame guides
and safe action / title overlays, zebra and false color exposure overlays, waveforms, camera status and
operation menus.
RED™ LCD: 1024 x 600 resolution RGB 4:4:4 progressive video display with Surround View, frame
guides and safe action / title overlays, zebra and false color exposure overlays, waveforms, camera status
and operation menus.
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OCTOBER 19, 2009 ©2009 RED.COM INC.