Extron Electronics DSC HD-3G A User Guide - Manual (Page 42)

Changing the Output Resolution and Refresh Rate
In addition to the Output submenus (see pages 25 and 27), other options for setting
the output resolution and refresh rate include resetting the output rate using the front
panel

button (see Resetting the Output Rate on page 37), SIS commands (see the
Output Configuration commands beginning on page 54, and the Windows-based
Control Program (see the program help file).
Custom Rates — DSC 3G-HD A Only
In addition to the 42 factory output resolutions, 3 custom user-defined rates are available
for the DSC 3G-HD A via SIS commands (see the
Output Scaler Rate SIS commands
on page 54 for the command format) or the Windows-based Control Program (see the
program help file). When no custom EDIDs are defined, these three resolutions and rates
default to 720p @ 60 Hz. The OSD dynamically updates itself based on the current file
stored in the custom EDID slot. For example, if a custom 720p EDID has been uploaded,
the OSD would read
C1: 720P @ 60 Hz .
Importing an HDMI EDID — DSC 3G-HD A Only
You can also import the EDID of a connected HDMI sink to use as a custom rate. This
EDID can be saved and stored in one of three custom EDID slots, which are then available
for custom EDID emulation or custom output rate generation (custom rate based on the
EDIDs preferred timings) (see the
Output EDID command on page 54).
NOTE: If an imported or custom rate is not a valid output resolution, the output
reverts to the default (720p @ 60 Hz).
Changing the Output Resolution from the Front Panel — DSC HD-3G A Only
Depending on which Output LED is lit (2.97 Gbps for 3G-SDI, 1.485 Gbps for HD-SDI,
or 270 Mbps for SD-SDI) you can press a combination of front panel buttons to cycle
through the different levels of output signal format and change the resolution. This is
helpful if you are not able to display an image on the screen.
To change the resolution using the front panel buttons:
1. With the scaler powered on, press and hold the Menu and Auto-Image () buttons
until the 1.485 Gbps (HD-SDI) LED lights approximately 5 seconds), indicating that
the unit is now outputting 720p @ 59.94 Hz. If a screen is connected, the following
message is displayed:
Press Enter to confirm the new resolution. Unit will return to previous
resolution in 15 seconds if not confirmed.
2. Press the  or

button repeatedly to cycle through the output resolutions typically
associated with the HD-SDI output format.
NOTE: If you do not press a button within 15 seconds, the DSC reverts to the
previous output rate and you must return to step 1 if you want to select another
resolution.
DSC 3G-HD A and DSC HD-3G A • Operation 36