Grass Valley K2 System Guide v.9.0 - Manual (Page 185)

Network and firewall policies
The following protection policies are recommended:
• Where possible, the K2 system should be run in a closed and protected environment without
network access to the corporate IS environment or the outside world.
• If the K2 system must operate in a larger network, Grass Valley recommends that access be
through a gateway or firewall to provide anti-virus protection. The firewall should allow incoming
HTTP (TCP port 80) connections for client and configuration connections to the K2 system
inside the private network.
• Access to the K2 system should be controlled in order to limit the likelihood of malicious or
unintended introduction of viruses.
About tri-level sync
The K2 Summit/Solo system supports tri-level sync as a genlock reference source. The reference
must be in an HD format and frame rate that is supported by the K2 Summit/Solo system, as follows:
• Reference Standard: NTSC (59.97Hz)
• 1080i 29.97
• 720p 59.94
• Reference Standard: PAL (50Hz)
• 1080i 25
• 720p 50
The K2 Summit/Solo system automatically detects, switches, and syncs to the reference. When you
configure the reference standard for either NTSC (59.97Hz) or PAL (50Hz) in K2 AppCenter
Configuration Manager, a restart is required to put the change into effect and the system starts with
a SD reference format by default. It then attempts to detect a reference in a format and frame rate
that is compatible with the current reference standard setting. When the K2 Summit/Solo system
detects a reference in a supported format, it automatically switches to that format. This allows the
system to switch between SD and HD tri-level formats with frame rates that are compatible with
the reference standard setting. When the K2 Summit/Solo system locks to a new reference format,
it saves the format and frame rate information, and upon restart it returns to the saved format and
frame rate.
Do not use a progressive reference with an interlace output. For example, do not use 720p tri-level
sync for interlace output formats (such as SD and 1080i). Output timing can be off by a field with
this type of incompatibility.
The K2 Summit/Solo system treats the following conditions as a loss of reference:
• No reference is present
• A reference in an unsupported format is present
• A reference in a supported format is present but it has a frame rate that is not compatible with
the current reference standard setting.
06 November 2012 K2 System Guide 185
Administering and maintaining the K2 system