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.

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.