Extron Electronics DSC HD-3G A User Guide - Manual (Page 34)

• Output Resolution — This option lets you select the resolution and refresh rate
for the connected output display. The DSC HD-3G A has a range of factory-loaded
resolutions and rates from which to choose (see the resolutions table below for the
available resolutions and rates. Different refresh rates are available depending on the
selected resolution.
1. Select Output Resolution from the Output menu.
2. Press the  or  button to select a resolution.
3. Press the  or

button to select a rate for the resolution.
4. When you enter a new resolution, a message appears on the display, prompting
you to press Enter to confirm your selection. If you do not confirm it within
15 seconds, the scaler returns to the previously selected resolution and rate.
The following resolutions and rates are available for the DSC HD-3G A:
Resolution 23.98 Hz 24 Hz 25 Hz 29.97 Hz 30 Hz 50 Hz 59.94 Hz 60 Hz
Match Input Rate Sets the output rate to match the signal of the connected input.
480i X X
576i X
720p X X X X X X X* X
1080i X X X
1080p X X X X X X X X
2k (2048x1080) X X X X X X X X
• Genlock/AFL — This option lets you enable or disable syncing of the video signal
to the reference signal from an external sync device connected to the Genlock Sync
input connector. Signals on the green wire of a component video device or an SDI
genlock signal can be used for genlock.
This option also enables and disables the AFL (Accu-RATE Frame Lock), which locks
the output vertical refresh rate to the vertical refresh rate of the selected input.
NOTE: Genlock and AFL lock the output refresh rate to similar input rates. If the
input signal is locked on a rate that is not considered a standard SDI output or
that is very different from the current output setting, the DSC may not output a
signal. The image may not display or may blink.
To select the genlock or AFL mode, select Genlock/AFL from the Output submenu,
then press any of the arrow buttons to step through the options. The choices are:
• Off: The output runs at the selected output frame rate using time base corrected
frame buffers. This selection is the default.
• Input AFL: The output is locked to the vertical sync of the input. This is valid only
if the frame rate is an SMPTE video standard and the output frame rate is the
same.
• SDI Genlock: The genlock input and loop-out are used for sync reference. The
Genlock input supports bi-level and tri-level sync. The video output requires time
base correction if the input source is of a different frame rate.
• SDI Genlock Offset — This option lets you adjust the horizontal and vertical offset
of the genlock signal. (This feature can be adjusted only if the DSC is set up for SDI
genlock.)
Use the  or  button to adjust the horizontal (
H ) offset value. Use the  or

button to adjust the vertical ( V ) offset value.
DSC 3G-HD A and DSC HD-3G A • Operation 28