Figure 4.2: Receiver Tuning Parameters; Table 4.2: Receiver Tuning Parameters - Avocent Emerge MPX Installer/User Manual

46 MPX Extender Installer/User Guide
The following table provides an overview of receiver tuning parameters:

Table 4.2: Receiver Tuning Parameters

Setting
Receiver Video Latency
Receiver Audio Latency
Receiver Retry Limit

Figure 4.2: Receiver Tuning Parameters

Description
The MPX transmitter places a timestamp on audio and video data to
ensure proper lip-synch across all bound receivers. Thus audio and video
output will be 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 an MPX receiver and its associated display device
may cause a noticeable 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.
This parameter limits the amount of retransmitted data that a receiver is
able to request from a transmitter.