AJA 4K2HD Specifications download pdf (Page 6)

4K2HD v1.0 www.aja.com

Default Operation The 4K2HD auto configures to the connected inputs. The auto-configure function

identifies the connected inputs and generates the default outputs for the given input.

Default operation can be overridden and set manually using AJA’s MiniConfig

application.

NOTE: Signal conversion requires the presence of a valid SDI video signal on the SDI IN 1 BNC.

For single SD or HD inputs, BNC input 1 is the default input. For dual-link 1.5Gb HD

inputs, and 4K dual-stream 3Gb SDI inputs, inputs 1 and 2 are default. Where applicable,

both level A and B 3Gb inputs are auto-detected and supported.

When connecting the 4K2HD with multiple SDI inputs in the auto-configure mode

(default), as the user connects the first HD-SDI to input 1, the unit will output that input

as a full screen HD. As soon as the second input is connected, the unit will know that

either QuadHD or 4K x 2160 is present and the display will change to show the two

connected quadrants in the upper left and upper right of the output. The remaining two

quadrants will be displayed as they are connected.

It is possible to use two dual stream 3G inputs to make 3840 or 4K video. In this case SDI1

and SDI2 are assumed to be the inputs: SDI1 linkA makes the top left quadrant, SDI1 linkB

makes the top right quadrant, SDI2 linkA makes the lower left quadrant, and SDI2 linkB

makes the lower right quadrant. To use this mode change the Video Source Selection to

'2 X SDI 4K'.

Video Output 4K2HD has two output connectors, HDMI and SDI, that are both active simultaneously.

For 4096x2160 inputs, the 4K2HD will output 2048x1080 if 2K crop option is turned off

(through MiniConfig), otherwise 4096x2160 inputs will be scaled to 2048x1080, then

cropped to 1920x1080. 4K2HD will not scale 4096 to 1920 pixels.

The HDMI and SDI output connectors will generally be the same video, with the

exception of non-4K PsF video input.

SDI passthrough is enabled by default if the input video is 2K/HD PsF. In this case, SDI

output is PsF format, and HDMI output is progressive format. The HDMI output is delayed

one frame, compared to the SDI output. The SDI passthrough can be disabled by

MiniConfig. If disabled, the SDI output will be progressive format, the same as HDMI

output, with no frame delay.

HDMI and SDI Output

Control Differences

Some video output control options are only applicable to HDMI output, such as color

range, sample structure or HDMI/DVI standard. Some options are only applicable to SDI

output, such as Level B control, or PsF passthrough. And some output control options are

applied to both, such as Center Cut.

MiniConfig Control Configuration set via MiniConfig is stored in the 4K2HD unit through subsequent power

cycles.

MiniConfig Control

Functions

Input Video Selections: • Video Source (Auto, 4xSDI 4K, 2xSDI 4K, 2xSDI HD-DL, SDI 1-4)

• Color Space (Auto, 422 YCbCr, 444 RGB, or 444 YCbCr)

• RGB Range (SMPTE or Full color range).

• Bit Depth (Auto, 8-bit, or 10-bit)

1 2 3 4 5 6 7 8 9 10 11 ... 31 32

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AJA 4K2HD Specifications Page 6

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