Appendix A – DGX Configuration Software
176
Instruction Manual – Enova DGX 8/16/32/64 Digital Media Switchers
Maintain Aspect Ratio and Stretch to Fit
In the Scaler Mode view, you can select one of the two aspect ratio options for the selected outputs: Maintain Aspect
Ratio (default) and Stretch to Fit.
To set the aspect ratio:
1.
Select the desired output(s).
2.
Select one of the Aspect Ratio options:
Maintain Aspect Ratio
– This option maintains the incoming video’s aspect ratio. The image is scaled until
the display’s video fills either horizontally or vertically first. If the vertical direction is filled first, then the
video will have pillar box, black bars on the sides of the display (on left in FIG. 104). If the horizontal
direction is filled first, then the video will have letter box, black bars on the top and bottom of the display
(not shown).
Stretch to Fit
– This option scales the video to fill the display in both the horizontal and vertical directions
(display on right in FIG. 104). Black bars do not show when Stretch to Fit is selected.
3.
Click the Set button to the right.
The selected aspect ratio will now persist to the Auto and Manual (override) modes. The Bypass mode remains
unaffected.
Scaler Override View
From the Scaler Override view (Manual mode), an output can be selected under “EDID Source.” Click Refresh EDID to
determine the attached destination device’s resolution and then apply it to one or more outputs which have been selected
in the device tree on the left.
In some special installation cases, you will need to use the settings in the Scaler Override view to override the automatic
scaling and set (configure) a specific or a custom resolution for the display monitor. When an Enova DGX Switcher is
connected to a PC running DGX Configuration Software, the program displays the resolutions supported by the selected
destination monitor (or other destination device) based on the set of supported resolutions in the monitor’s EDID.
Settings can then be selected and applied to the output. When you select Manual in the Scaler Mode view, the selected
connector sets up the video scaler with factory default values (1280x1024 @ 60 Hz). EDID preferred resolution
parameters are used if available, unless scaler setup parameters were previously uploaded.
Important:
If a device with an EDID (e.g., a video processor) is installed between the output and destination
monitor, see page 185.
Note:
When the following timings are in the EDID data, the Scaler Override view will not display them:
720x400 @ 70 Hz, 720x400 @ 88 Hz, 640x480 @ 67 Hz, 832x624 @ 75 Hz, and 1152x870 @ 75 Hz.
These timings can be entered in the program as custom resolutions.
FIG. 104
Example of displays set to Maintain Aspect Ratio and Stretch to Fit