Settings
To adjust the date and time settings:
1
Tap the ‘pen’ icon to edit the settings.
2
Tap the day, month, year or time edit arrows to change a setting.
3
Tap ‘save’ to confirm the change.
Monitoring using on screen meters
Your video assist features useful on screen meters such as a histogram and audio levels meter
so you can check your exposure and luminance range on cameras, plus monitor the level of
your source audio.
Histogram
The left side of the on screen meters displays a histogram showing the distribution of the
luminance in your video. Pure black is on the far left side of the display and pure white is on the
far right of the display. When the video signal sharpens to a point at the bottom edges within
these limits you’ll know your shadows and highlights are not clipping, which means details in
the tonal ranges of your video are preserved.
Audio Meters
The right side of the on screen meters displays audio meters showing audio levels for channels
1 and 2 of the input source. The display is calibrated to dBFS units and features peak hold
indicators which stay visible for a short time so you can clearly see the maximum levels reached.
To achieve optimum audio quality, ensure your audio levels do not reach 0 dBFS. This is the
maximum level, meaning that any audio that exceeds this level will be clipped, resulting in
distortion. Ideally your peak audio levels should fall in the upper end of the green zone,
between -20 and -12dBFS. If your peaks enter into the yellow or red zones, corresponding to
-12 and -6dBFS your audio is in danger of clipping.
Channel 1 on top with the peak audio levels falling in the upper end of
the green zone and levels in danger of clipping on channel 2
On Blackmagic Video Assist 4K, tap on the audio meters to reveal
the analog audio level sliders. Drag the sliders left and right
to decrease or increase the audio levels for each channel.
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