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Selenio™ Network Processor
User Guide
Low Latency Mode
Low latency mode improves the system latency for sync and conversion personalities by not realigning
to reference. Low Latency mode is available for both the SDI to IP Transmit path and the IP Receive to
SDI path and is applied to the entire processor. When a processor is configured for Remap personality,
low latency setting has no effect.
When an output is configured for SDI, don't enable Low Latency unless it is connected to a downstream
device that will re-align the signal to a timing reference.
When low-latency is enabled, other "delay" controls become unavailable:
•
Frame delay
•
H (horizontal) phase
•
V (vertical) phase
•
Channel delay (found in the Audio tab)
Audio IP Tx Packet Time
The Audio IP Tx Packet Time parameter allows selection per processor. Options are:
•
1 ms
•
125 us
Since 125us uses more bandwidth than 1ms, it is recommended only to use 125us when combining
audio transmitter in 4- or 8-channel configurations.
Configuring a Section for HD or UHD
Note: This section only applies when the Processor Personality is Sync. See Configuring a Sync
Personality (on page 81).
There are two sections per processor and they are independently selectable to be HD or UHD. Input can
be SDI or IP. Output can be SDI and IP concurrently.
•
Possible input and output video standards include 720p/50, 720p/59.94, 1080i/50, 1080i/59.94,
1080p/23.98, 1080psf/23.98, 1080p/25, 1080p/29.97, 1080p/50, 1080p/59.94, 2160p/50,
2160p/59.94
•
Possible Input Interface: HD-SDI, 3G-SDI, 2SI-SDI, 2110-20
•
Possible Output Interface: HD-SDI, 3G-SDI, 2SI-SDI, 2110-20
Each of the four processors has an Edit button on the Dashboard. Click Edit to see the following dialog
box for that processor:
For each section, you can choose:
Operation Mode
© 2019 Imagine Communications Corp.
• HD: The section will contain four programs
• UHD: The section will contain one program
Proprietary and Confidential.
Configuring Processors
May 2019 | Page 89
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