AJA Ki Pro - Manual (Page 20)

Ki Pro v3.2 www.aja.com 20
used for dubbing content to another device with matching timecode. For timecode to
multiple Ki Pro units, the use of a timecode generator and a timecode distribution
amplifier is recommended.
SDI Input and Outputs Two BNC connectors are provided for SDI input and output. SDI input and
output supports SD-SDI and HD-SDI video and embedded 24-bit digital audio.
If your camera has multiple outputs, look to see if it has SDI, and use it where
possible for the highest quality.
Component YPbPr Connect component YPbPr video cables from a VTR, Camera, or other
source to the three YPbPr input BNCs: Y/G, Pb/B and Pr/R. Then
connect the YPbPr Out BNCs to a monitor, or other component device.
Component input video signals are A/D (input) converted (10-bit).
Similarly, component output video signals are D/A converted (10-bit).
Component video signals are higher quality than composite.
A Note About RGB—Although RGB is used less frequently in today’s video systems, Ki
Pro supports it at output. Because Ki Pro’s (and SMPTE SDI) native format is YPbPr,
AJA recommends the use of YPbPr whenever possible. Although component video
monitors often have RGB inputs, it’s better to use YPbPr when the monitor supports
it. The YPbPr format provides “headroom” for “superwhite” and “superblack”—and
these video levels will be clipped when transcoding to RGB. Also, the RGB/YPbPr
transcoding involves a level translation that results in mathematical round-off error.
A Note About YPbPr—Component Video, or YPbPr, has been given several names over
time. YUV, Y/R-Y/B-Y, and YCbCr, are just some examples. Although these various
formats have some differences in levels, they are all basically the same. Ki Pro
supports three different types of YPbPr: SMPTE/EBU N10, Betacam (NTSC), and
Betacam (NTSC Japan). These three formats differ in level only.
Note About BETA Setting—Setting the Ki Pro component input and/or output to "Beta"
for HD material results in an "Invalid Selection" alarm that must be corrected before
recordings or other operations may take place.
CVBS Composite NTSC/
PAL Output
One BNC connector supplies composite NTSC or PAL output. Connect the
CVBS Out BNC to a monitor, or other Composite video device. Composite video
signals are D/A (output) converted (10-bit).
NOTE: Composite video output follows the settings made for the component video output; because
of this, if a composite output is desired when working with HD, the component video output
must be set to SD.
HDMI Two HDMI connectors provide for input and output of HDMI compatible video
and embedded audio. HDCP sources are not supported on the input. The HDMI
input is designed to support long cable runs: up to 100 feet (30.48m) when using
22 or 24AWG HDMI cable, or up to 50 feet (15.24m) using 28 or 30AWG HDMI
cable. The HDMI output supports standard HDMI cables only.