User Manual

16
User's Guide Digiface AVB © RME
7.3 AVB Controller
The network or AVB-relevant configuration of the Digiface AVB takes place via the RME AVB
Controller, which must run permanently in the background. Stopping the tool in the systray
terminates the AVB functionality of the Digiface AVB.
The screenshot shows the basic functions of the AVB Controller, which appear as soon as a
network cable is plugged into the Gigabit ethernet port of the Digiface AVB. In case this is not
an AVB network no other AVB devices are shown, but the Digiface AVB itself is displayed and
the sample rate is now selectable.
Devices
Lists all AVB devices found in the network, and allows a selection to configure one device at a
time.
Clock Configuration
Clock Mode
Select the clock source: Internal Clock, Input Stream 1 bis 16, Word Clock.
Sample rate
Setting the sample rate of the internal clock, and of WDM and ASIO. With external clock, this
value must be set manually to the present, currently applied value.
Connections
Configuration of up to 16 input streams with up to 32 channels each. These streams are
provided by the other (sending) devices in the AVB network.
Type / Information
This window displays information about the currently selected AVB device, such as model,
manufacturer, version number, etc. In the Digiface AVB, the last line displays the version
number of the currently installed network driver. For input delay the Digiface AVB shows the
measured delay of the incoming data for the planned delivery (presentation time of the sending
device). A value near zero nanoseconds means that the data in the network has been delayed
so much that they can no longer be received.
Options
Network Latency (Presentation Time)
Allows setting of the delay of outgoing data. Available settings are 0.3125 ms, 0.625 ms, 1 ms
and 2 ms. Similar to the ASIO buffer size, higher values are more reliable but cause additional
latency. However, unlike ASIO low values do not lead to crackling, but to a complete failure of
the audio stream.