Datapath X4 User Guide

Whenever the monitor EDID is used, the x4 will calculate the internal scale factors to ensure that the
monitor (at whatever resolution it is being driven) will still display the correct proportion of the input im-
age.
If an EDID cannot be read (for example if the monitor cable does not support the DDC signals required),
there is a default mode that can be programmed into the x4’s memory. This is factory congured to
1080p.
In some cases it may be that the user requires a very specic output timing (for example when
genlocking to the input) irrespective of the monitor EDIDs. In this case the x4 can be congured to al-
ways output the mode that has been programmed as the default mode.
Selecting the Regions to Be Displayed
Each output of the x4 can take its display data from any arbitrary rectangular region of the captured
input image. The factory default for these cropping rectangles congures the four monitors to display a
quarter of the input as a 2x2 array, and these proportions are maintained across dierent input
resolutions.
For a 1080p input, this means that 960x540 pixels from the input image would be upscaled by a factor of
2 in each direction if the selected output resolution was 1080p.
However if the input resolution were to change to 1600x1200, then for the same output monitor the x4
would upscale from an 800x600 region and would reprogram its scale factors to 2.4 horizontally and 1.8
vertically to support the same 1080p monitor.
The cropping regions can be assigned aribitrarily and can overlap, the only restriction being that the
resulting scale factor must be greater than 1.0 (ie 1:1 or upscaled) in either direction. As an example it is
possible to use the x4 to output four identical copies of the input signal (providing the resulting output
timings remain within the capabilities of the single-link DVI outputs).
The regions of the input image to be displayed on a given output monitor can be programmed via USB
by using the Datapath conguration application.
In order to support portrait orientation of monitors, the source data can be rotated by 90º, 180º or 270º
as it is output to the monitor.

Datapath X4 Specifications

General

Number of outputs	4 outputs
AC input voltage	100-240 V
Operating temperature (T-T)	0 - 35 °C
Product color	Black
Output voltage	5 V

Weight and Dimensions

Depth	175 mm
Width	235 mm
Height	44 mm