
Io XT/4K Capture, Display, Convert v14.0 18 www.aja.com
Audio Level Meters
The Audio Level Meters in the center of the front panel indicate:
• During Capture - The first 8 channels of the audio source selected (SDI, HDMI,
Analog).
• During Playback - The sum of whatever sources are being played out via
the AJA hardware; i.e. NLE timeline and mix of host system audio output (if
applicable).
The meter's LEDs are colored to indicate the amount below 0dBfs when averaged
over a one millisecond time interval:
dBfs
LED Color and Location
-2 db
Red LED 1 (top)
-12 db
Yellow LED 2
-20 db
Yellow LED 1
-30 db
Green LED 4
-40 db
Green LED 3
-50 db
Green LED 2
-60 db
Green LED 1 (bottom)
NOTE: These audio level meters are for guidance only. Third-party audio metering
should be employed when doing critical audio editing and mixing.
Power Switch (Io XT)
When the power supply is plugged in and receiving power, pressing the power
switch toggles power on and (when held for one second) powers the unit off. The
switch lights green when the unit has power.
Power LED (Io 4K)
The power LED lights up yellow when power is provided via the power supply.
Once a Thunderbolt 3 connection is made, and the host is in an active state, the
light turns green.
AJA Control Panel Overview
NOTE: This section initially describes the Io XT version of the Control Panel screens that
support video formats up to 2K bandwidths. Io 4K differences will be noted and
detailed UltraHD/4K operations are discussed in
"Using Io 4K for UltraHD/4K" on
page 45
.
The AJA Control Panel is a software application that provides a simple visual
showing how the Io XT/4K hardware is currently configured and allows you to
make changes. You can change signal input and output parameters and define
the video processing that will be performed.
The AJA software installer automatically installs the Control Panel application on
your computer. You’ll find the AJA Control Panel application in your Applications
folder.