Grass Valley K2 AppCenter v.9.0 - Manual (Page 169)

• 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.
In these cases the K2 Summit/Solo system internal genlock flywheel provides a stable reference for
the last reference set. The system reports this status in K2 AppCenter Configuration Manager
Reference Standard by a black "Reference present" indicator and sends a message to NetCentral.
Configuring record channel video settings
If you are using a channel suite with channels from multiple sources, make sure that you have
selected a channel from the K2 Summit/Solo system that you want to configure before accessing
Configuration Manager.
Video record compression settings are not global; they can be set on a channel by channel basis.
CAUTION: When using a K2 Summit SAN-attached system with shared storage, bear in
mind that any configuration changes that result in an increased bandwidth (such as increasing
the bit rate, media formats, and ratio of record channels to play channels) affect load balancing.
Therefore, if you change your intended use of a K2 Summit SAN-attached system and
increase its bandwidth requirements, you risk losing media access. For a more detailed
description of load balancing, see "K2 SAN Installation and Service Manual".
1. In AppCenter, click System | Configuration .
Configuration Manager opens.
2. Click Channel , and select a channel.
29 October 2012 K2 AppCenter User Manual 169
Audio/Video Configuration