GUIDE TO INSTALLATION AND OPERATION
MDX-3901 |
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5.2 Video Input/Output panel
This panel allows input selection and control of the deglitcher.
5.2.1 Input/Output Config tab
Input Select
: use the pulldown list to select between the
copper input (BNC or HD-BNC), quad-link copper input
(BNC or HD-BNC), and the fiber optic input (if available).
Mode:
sets the MDX-3901 operating mode:
Embedder
:
embeds up to sixteen (16) channels from the discrete AES
and/or the MADI inputs.
De-embedder
: de-embeds up to
sixteen (16) channels available on the 8 AES discrete AES
and the MADI output.
Fiber Output Config:
This will only be active if an Optic Fiber
module with one or two outputs is installed in the rear panel.
Recovery
(embedder mode only): sets the MDX-3901
behavior upon signal loss.
Format
sets the video signal
resolution (OFF disables this feature), and
Signal
sets a
color bar or black pattern.
Output Status shows the current video format and whether
the recovery signal is locked to reference.
5.2.2 Deglitcher tab
When the Deglitcher is active, the card supports hot-switching between two
signals without producing artifacts on the output.
In order to enable the deglitcher, the URS signal or the External
reference must be selected in the Reference panel (
see section 5.3
Deglitcher:
select OFF or ON from the pulldown
For this mode to function correctly, the two signals switched before this
equipment must meet the following requirements:
They must be synchronized to the reference
They must be phased within one line of each other
They must be phased to /- ½ line of the HREF of the reference signal
The offset from the VREF can be variable, but a distance of greater than 10 lines could create an artifact in the active
video. If the two signals are more than 1 line apart, we will see a vertical jump at the moment of switching that is
proportional to the number of vertical lines of offset between the two signals.
When a reference is present and the deglitcher is active, the card reports the difference in timing between the input and
the reference when the transition occurs.
If the reference is missing when the deglitcher is activated, the card
will indicate “Missing reference” in red, and
the reference status icon at the top of the iControl window will turn red and show the message “Reference
missing”.
Figure 5.2 Input/Output Configuration tab
Figure 5.3 Deglitcher tab
