AJA FS2 Instruction Manual download pdf (Page 136)

138

HDMI RGB

Range

HDMI RGB Range selects the output range for HDMI YCbCr. Full allows a range of 0-

255 and SMPTE limits the range to 16 to 235 (see note).

Note: YCbCr luminance (Y) channel data ranges nominally between 16 (black)

and 235 (white). Values outside of this range are typically clamped to the valid

range. This may cause confusion because JPEG JFIF YCbCr values range between 0

and 255. Mixing these values causes video contrast shifts. You can avoid these

shifts if you maintain one range of values throughout your system.

AES/EBU SRC

Mode

AESEBU SRC Bypass controls the mode of the audio sample rate converters for AES/

EBU input audio pairs.

In Manual mode, the sample rate converters are enabled manually for each AES pair.

In Auto mode, the system decides how to handle sample rate conversion. Normal

PCM audio passes through the Sample Rate Converters and gets converted, as

appropriate. AES channels in which the non-audio flag is set in the Channel Status

Word are automatically detected and allowed to bypass the Sample Rate

Converters; the signal passes unaltered and the existing data is preserved,

(12) HDMI RGB Range Selections Selection Descriptions

Full (default)

SMPTE

Selects an HDMI luminance output range of 0-255.

Selects an HDMI luminance output range of 16-235.

(14.0) AES/EBU SRC Mode Selections Selection Descriptions

Auto

(default)

Manual

The signal bypasses the Sample Rate Converters for audio

channels containing a non-audio flag in the Channel Status

Word. If the non-audio flag is not set, the signal passes

normally through the Sample Rate Converters.

The FS2 determines what to do about audio sample rate

conversion on a channel pair-by-pair basis. If a channel pair

is set to On, sample rate conversion is applied to that channel

pair. If a channel pair is set to Bypass, the FS2 leaves

embedded audio as is, bypassing sample rate conversion;

this is useful for Dolby

5.1 embedded audio and other

applications where you do not want sample rate conversion

to occur.

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AJA FS2 Instruction Manual Page 136