AJA Io4K - Manual (Page 55)

Io XT/4K v10.5r2 www.aja.com 55
Audio Input Digital
• 16-channel, 24-bit SMPTE-259 SDI embedded audio, 48kHz sample rate, Synchronous
• 8-channel, 24-bit HDMI embedded audio, 48kHz sample rate, Synchronous
Audio Output
Digital
• 16-channel, 24-bit SMPTE-259 SDI embedded audio, 48kHz sample rate, Synchronous
• 8-channel, 24-bit HDMI embedded audio, 48kHz sample rate, Synchronous
Audio Output
Analog
• 8-channel, 24-bit D/A analog audio, 48kHz sample rate, balanced (via 8 x XLR on DB-25
breakout cable)
• +24dbu Full Scale Digital (0dbFS)
• +/- 0.2db 20 to 20kHz Frequency Response
Downstream Keyer
• Supports graphics with alpha channel over video, matte or framebuffer, or framebuffer
content over incoming video or matte.
Up-Conversion
Hardware 10-bit
Anamorphic: full-screen
Pillar box 4:3: results in a 4:3 image in center of screen with black sidebars
Zoom 14:9: results in a 4:3 image zoomed slightly to fill a 14:9 image with black side bars
Zoom Letterbox: results in image zoomed to fill full screen
Zoom Wide: results in a combination of zoom and horizontal stretch to fill a 16:9 screen;
this setting can introduce a small aspect ratio change
Down-conversion
Hardware 10-bit
Anamorphic: full-screen
Letterbox: image is reduced with black top and bottom added to image area with the
aspect ratio preserved
Crop: image is cropped to fit new screen size
Cross-conversion
• Hardware 10-bit
• 1080i to 720P
• 720P to 1080i
• 720P to 1080PsF
SD to SD aspect
ratio conversion
Letterbox: This transforms SD anamorphic material to a letterboxed image
H Crop: Will produce a horizontally stretched effect on the image; transforms
anamorphic SD to full frame
SD Pillarbox: Will produce an image in the center of the screen with black borders on the
left and right sides and an anamorphized image in the center
V Crop: Will transform SD letterbox material to an anamorphic image