Genlock

This section includes:

Generator locking (genlock) is a tri-level signal used to synchronize video and audio systems. Genlock is based on SMPTE 296M and 274M. There are two (2) important genlock sync modes:

Monitor Sync
Sensor Sync

NOTE: For genlock to function correctly, the cameras must be on the same firmware version, and must be using the same project time base and recording frame rate.

Monitor Sync

Monitor Sync occurs when an incoming genlock signal is compatible with the monitor output frequency. Monitor Sync is achievable even if the camera is using another form of synchronization to sync the camera sensor.

Connect the genlock device to the camera:
- Connect the SYNC port on the camera to the device (green BNC) using a 3BNC-to-00 Sync Cable.
Set up the frequency for the HD-SDI output (select Auto to automatically match the HD-SDI output to the current Project Time Base). For more information, go to Frequency.
Monitor Sync is achieved automatically when an incoming genlock signal is compatible with the monitor output frequency. When Monitor Sync is achieved, the GEN indicator in the Lower Status Row illuminates green.
Figure: HD-SDI Output Frequency

Required Cable

790-0154, 790-0643: 3BNC-to-00 Sync Cable

Sensor Sync

Sensor Sync is achieved when an incoming genlock signal is compatible with the monitor output frequency, project time base, and recording frame rate. In Sensor Sync mode, sensor timing is locked to the genlock signal. Sensor Sync requires the following synchronized settings:

Setting	Menu Location Path
Genlock signal frequency	N/A; external genlock device
HD-SDI monitor output frequency	Menu > Settings > Display > Monitor Control
Project Time Base
Recording Frame Rate

Set Up Sensor Sync Mode

To set up and enable Sensor Sync Mode, follow the instructions below:

Ensure that the Project Time Base and Recording Frame Rate will be compatible with the incoming genlock signal.
Connect the SYNC port on the camera to the device (green BNC) using a 3BNC-to-00 Sync Cable
Go to Menu > Settings > Setup > GPIO/Sync > Sync.
Select Genlock from the Sensor Sync Mode drop-down menu.
Select BRAIN from the Genlock Source drop-down menu.
Figure: Sync Settings

Set up the frequency for the HD-SDI output (select Auto to automatically match the HD-SDI output to the current Project Time Base). For more information, go to Frequency.
The GEN indicator in the Lower Status Row turns green when a compatible genlock signal is present and genlock is enabled. The SYNC indicator in the Lower Status Row turns green when Sensor Sync is achieved.

Required Cable

790-0154, 790-0643: 3BNC-to-00 Sync Cable