Connector descriptions, Connectors common to both models, Io xt connectors – AJA Io4K User Manual
Page 11
Io XT/4K v10.5r2
www.aja.com
11
Connector
Descriptions
The following section describes the connectors offered on the Io XT and Io 4K chassis in
the following order:
• Connectors common to both models
• Io XT connectors
• Io 4K connectors
Connectors Common to
Both Models
HDMI Input and Output:
Two HDMI connectors on the Io XT/4K provide input and output of HDMI video and
multi-channel embedded audio.
• Io XT has HDMI v1.3a capability at 30 bits per pixel allows full support of the latest 10-
bit monitors.
• Io 4K has HDMI 1.4 capability, supporting Ultra HD and 4K resolutions at up to 30
frames per second.
• Both Io XT and Io 4K support 2 or 8 channel HDMI audio input and output.
HDCP is not supported on either input or output. Io XT/4K HDMI output does not have
HDCP, and input sources having HDCP are not supported. The HDMI input is designed to
support long cable runs—up to 100 ft. when using 22 or 24AWG HDMI cable, or up to 50
ft. using 28 or 30AWG HDMI cable. The HDMI output supports standard HDMI cables
only.
RS422 Machine Control:
A female DE-9 connector on Io XT/4K provides connection for VTRs, camcorders, disk
media servers, and other devices using RS422 SMPTE (Sony) protocol. (Connector pinout
is listed in Appendix A, see
.)
Reference Video and LTC Input:
Two BNC connectors on Io XT/4K provide reference Input and Output. The Reference
Video input can also be used for LTC input. The selection of Reference (sync) or LTC is set
using the AJA Control Panel (
“Input Select Screen” on page 33
).
In Video Pass-through mode, these connectors are effectively loop-through. Supplying
reference signal to the Reference input allows you to synchronize Io XT/4K outputs to
your house analog reference video signal (or black burst). If you have a sync generator or
central piece of video equipment to use for synchronizing other video equipment in your
studio, then connect its analog composite output here. When Io XT/4K outputs video, it
uses this reference signal for locking. When connecting a reference video source, the
locking signal should be the same format as the Primary format selected in the AJA
Control Panel. It is possible in some circumstances to use an alternate format video signal
as long as the basic frame rate is compatible.
Balanced Analog Audio
Output:
A 25-pin DB connector provides 8-channel, 24-bit D/A analog audio, 48kHz sample rate,
balanced via 8x XLR on DB-25 breakout cable. (Cable not supplied.)
12V Power Connector:
A standard 4-pin XLR type connector is provided for either battery or line source power
using the supplied AC power adapter.
Io XT Connectors
These connectors are used only on the Io XT model.
Thunderbolt ports:
Two Thunderbolt ports are provided as describe in the figure above. These are first
generation Thunderbolt connections.
HD/SD SDI Input and Output:
BNC connectors are provided on Io XT for two HD/SD-SDI inputs and two HD/SD-SDI
outputs. The input and output support video and embedded 24-bit digital audio. Use SDI
wherever possible for the best quality 10-bit uncompressed video input, capture and