Grass Valley Kayak HD Installation v.6.8.8 - Manual (Page 79)

Kayak HD — Installation and Service Manual 79
Kayak HD Video Timing
Figure 46. Genlock Menu with Select SF Mode
2. Press to select either off or on to set the SF video format for your Kayak
HD switcher.
Adjust Internal System Timing
The Genlock Phase Knob (located to the right of the menu screen)
adjusts/moves the switcher’s internal system timing with respect to the
selected reference. Adjusting the Phase affects the phase of all inputs and
outputs of the switcher with respect to the external reference.
Grass Valley recommends that you use the AUX1 bus to check the video
timing of all inputs. This compares the video source selected on the AUX1
bus to the switcher’s internal system timing.
One method to determine the correct system timing phase is to select a
source on the AUX1 bus and then adjust the switcher’s phase to center the
source in the timing window. Record this phase setting. Repeat this process
for all external video sources.
Note Internal video sources cannot be measured and do not show up in the mea-
surement window when selected.
Find the average Phase value by adding the highest and lowest Phase
numbers together and then divide by two.
Now recheck all sources with the new average Phase number. Fine tune the
Phase adjustment if necessary.
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