GUIDE TO INSTALLATION AND OPERATION
IPG-3901 |
21
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When the TICO process is OFF, the SDI I/Os reserved for that process (as shown in the above chart) are freed
up and function as normal gateways.
•
Any time you try to turn a TICO encoder or decoder ON or OFF, a pop-up window will remind you of the
consequences and required actions affecting gateways on the card. For example:
A graphic is displayed for each of the two TICO processes, per the TICO model in use. The graphic shows the current
configuration, and reports the status for TICO.
For each TICO encoder or decoder, you must select the
format of the four 4K link signals. The choice will depend on
the format used by the source or destination equipment.
Use the
4K I/O pulldown
to select the appropriate format:
•
Quad split
– (SDQS): the 4K image is split into four
full-resolution quadrants, each sent on a single 3G
link.
•
2-Sample Interleave
– (2SI): the 4K image is sub-
sampled into four full-frame images, each at ½ the
vertical and horizontal resolution.
Be careful – this is a manual selection, and errors will
occur if the format selected in the pulldown does not
match the actual link format.
The TICO encoder/decoder uses 2-Sample Interleave
signals, so input/outputs in Quad Split format require an
additional conversion process in the signal path, adding
some processing delay to the delay inherent in the encoder
and decoder.
Process
Added Latency
TICO encoder
4.5 lines
TICO decoder
2.5 lines
Quad Split to 2-Sample Interleave
conversion
1 frame
4K Align
The input configuration and status display for TICO encoders includes a segment labeled 4K Align. This monitors the
timing of the four link inputs to the encoder.
•
The timing difference between 4K links should not exceed 400ns, as per SMPTE ST-425-5.
•
If the alignment criterion is not met, no TICO will be sent over IP.
Figure 5-8 TICO panel - Config tab
