Chapter 4: Additional Functions 35
Sharpness of
computer
graphics
Luma Chroma Percentages on the A/V Settings page of the transmitter.
Figure 4.3 on page 36 illustrates this web page.
This parameter affects the way in which the transmitter processes luma
and chroma information available in the input video stream. By default,
67% of the output stream is dedicated to luma information and 33% of the
output stream is dedicated to chroma information. This ratio is well suited
for a combination of motion video and some computer graphics. For
applications that are heavily slanted toward still graphic images with
sharp edges, you may have better results by increasing luma to 80%.
Experiment with the slider bar to find the settings that are best for
your
application.
Audio video synchronization
across display devices
Receiver Video Latency and Receiver Audio Latency on the A/V Settings
page of the receiver.
Figure 4.4 on page 36 illustrates this web page.
The extension network is designed to maintain synchronization of audio
and video signals across the output media modules of all bound
receivers. Thus audio and video output will appear as synchronized
across all display devices as long as the devices themselves introduce
equivalent latency prior to display. Introduction of scalers, converters or
other active processing devices between the output of a single MPX1000
reciever and its associated display device may cause a noticable video or
audio lag when compared to other receivers. With this parameter, it is
possible to mimic this delay on other receivers, thus bringing all display
devices into synchronization.
Default value for this parameter is 200ms. This delay provides an elastic
buffer of roughly 7 frames, allowing receivers to remain in lock step even
if lost packets need to be retransmitted. Reducing receiver latency below
the default of 200ms may compromise synchronization across receivers.
However, in applications consisting of one or two receivers, it may be
desirable to reduce this value if the primary application involves mouse-
driven presentations that are sensitive to latency. If choppy video occurs
on one or more receivers, raise the value until smooth video is obtained.
Table 4.1: Methods for Fine Tuning (Continued)
If you are fine tuning... Then choose...
