RED ONE OPERATION GUIDE - Manual (Page 10)

Build 31 v31.6.16
NOVEMBER 28, 2011
© 2007-2011 RED.COM INC.
9
IMAGE PROCESSING
The digital images received from the MYSTERIUM or MYSTERIUM X sensors are formatted as pixel de-
fect corrected (but not color processed) RAW data - similar to digital RAW stills cameras.
The sequence of RAW images received from the sensor is compressed using proprietary 12-bit
REDCODE™ RAW compression. The REDCODE RAW data recorded is independent of the RGB signal
monitored in the monitoring path. ISO, White Balance and other RGB color adjustments made to the RGB
monitoring path are not burned into the recorded 12-bit REDCODE RAW data.
REDCODE RAW images can be stored on Compact Flash, RED-DRIVE®, RED-RAM® or RED-RAID®
media.
The camera’s RGB monitoring path independently converts the sequence of RAW images received from
the sensor to white balanced 10-bit 1280 x 720 pixel RGB 4:4:4 video. This signal may be modified using
ISO, White Balance and other RGB color adjustments and provides monitor feeds for the RED EVF,
BOMB (Pro) EVF, RED LCD, Preview HD-SDI and HDMI outputs.
If a specific set of RGB image processing values are desired to be repeatable on-set, a LOOK file may be
created either by the camera or the REDCINE-X™ application software.
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 48 KHz 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 (-20dBFS) 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 +36dB to +54dB, with a default value of +36dB. 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.