MC500
System Setup Menus
Issue 1 Rev 6
Page 34
© 2015 SAM
7.5 Genlock
The Genlock controls lock the output video clock to the genlock source (input or reference)
regardless of the video standard. If the genlock source and the video output are the same
frame rate, for example, 50 Hz or 59.94 Hz, Genlock locks the output to the vertical phase of
the genlock source, giving consistent and repeatable delay.
When attempting to pass non-PCM audio, ensure that Genlock is enabled. If using an
external reference, it must be clock-locked to the input video.
7.5.1 Source Ch 1
The Source Ch 1 menu enables you to select options for a genlock source.
•
Ref Lock:
Locks the output video to the incoming reference.
•
Ch 1 Input:
Locks the output video to the channel 1 input.
•
Free Run:
Locks the output video to an internal reference clock.
7.5.2 Reference Status
Reference Status shows the standard of the reference signal. If reference has been assigned
using the controls but an input signal is not detected on the assigned reference input, Current
reference standard shows “Invalid input”.
7.5.3 Timing
7.5.3.1
Ch 1
The Timing controls enable you to specify the horizontal and vertical genlock timing.
•
Vertical Timing:
Adjusts the vertical timing of the output signal with respect to the
reference signal. The adjustment range is one output line in one-line steps. The
preset value is 0.
•
Horizontal Timing:
Adjusts the horizontal timing of the output signal with respect to
the reference signal. The adjustment range is one output frame in one-pixel steps.
The preset value is 0.
•
Status:
Shows the status of the currently assigned reference. For example, if genlock
is assigned to input 1, status shows “Ch 1 Input” followed by the current status of the
input. If there is no signal on the assigned reference, status shows “REF Loss”.
Note:
Lock to input wherever possible. Only lock to an external reference if necessary.
Note:
If Genlock is set to Free Run, non-PCM audio will always be corrupt.
