Black Box mm146 User Manual page 12

Movement
Sound
10
Too much movement tends to slow down the frame rate of the video, resulting in a
distorted picture. Avoid having a lot of movement in the background – for example,
do not sit with your back to a corridor – and try not to move around excessively. This
does not mean you have to sit completely still: just move naturally, but be aware that
if you make rapid movements, the person you are calling may see a distorted picture.
You can control the frame rate of the video you are sending, to adjust the balance
between smoothness and clarity. See Images on page 33, for more information. If
movement is important, set the Video Mode to Motion; if clarity is important, set the
Video Mode to Detail.
Where possible, it is better to choose a quiet environment than a noisy one. In very
noisy situations you will find the handset more effective than handsfree.
When using handsfree, remember that the built-in microphone is at the front right-
hand corner of the videophone. Don't cover this with your hand, or tap on the
videophone case.
You should avoid picking up or moving the videophone during a call.