Solidyne 542 APC, Owner'S Manual

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Section 5 Units with option /AoIP (streaming)
5.1 Streaming for STL
Optionally 542 APC can include the Ethernet module
"AoIP", which allows to link the processor directly to other
equipment via streaming, using a point-to-point data link.
The link can be physical through an Intranet, or wireless
with microwave links in the WI-FI or WI-Max 5.8GHz com-
munications band. These links have a range of up to
50Km and low costs for being equipment manufactured
in large series. The 5.8 GHz band is free to use for Inter-
net communications.
The Solidyne 542 processor can receive PCM audio via
RTP (recommended) which implies latencies of the order
of 20 to 40 mS; or MP3 encoded audio. MP3 encoding al-
lows you to configure links using the Internet with little
bandwidth requirement (0.5 Mbps upload for MP3 @ 192
kbps) but introduces delay times in the order of 200 to
500 milliseconds.
ABOUT LATENCY
WHEN THE STUDIO-PLANT LINK INVOLVES DELAYS GREATER
THAN 15 MILLISECONDS, MONITORING IS NOT POSSIBLE IN THE
STUDIOS BY TUNING THE AIR TRANSMISSION.
Those who speak into the air in the studio perceive the delay as an
“echo” in the headphones, which makes their task difficult. In these
cases, an auxiliary processor can be used in the Studio to process a
console direct output and use it in the monitoring circuit. You don't
need the same level of processing as air, but it should be similar in
compression and dynamics.
Note that to the delay introduced by the link, the latency of the 542 is
added, of the order of 9 mS.
5.1.1 Connections diagram
Figure 41: Basic diagram for streaming connection
5.1.2 Streaming settings
Step 1
Connect the ETHERNET AoIP
- 15
port to the network us-
ing a CAT5 UTP cable. To configure the streaming op-
tions, access the Control Panel of the Ethernet-AoIP mod-
ule. By default it comes in "Dynamic IP" mode, so it ob-
tains an IP address via DHCP. Once the IP address is ob-
tained, the green LED on the rear panel flashes (RJ45
ETHERNET AoIP).
ATTENTION: DO NOT CONFUSE THE IP ADDRESS OF
THE AoIP MODULE (ETHERNET PORT AoIP
- 15
) WITH
THE IP ADDRESS OF THE EQUIPMENT CONTROL (ETH-
ERNET Port
- 11
).
The processor can also be connected directly to a modem-router, since it
will usually also assign an IP via DHCP.
If the 542 AoIP module doesn’t find a DHCP server, then it will search the
network for a free IP address (this may take a few minutes).
Step 2
To know the IP address assigned to the 542 AoIP stream-
ing module, download the application "Solidyne Multi-
Discovery" from the following link:
www.solidynepro.com\DW\IP.exe
The file is a standard installer. When executed, it creates
the folder “Solidyne Discovery” in the Windows Start
menu, which contains the links to the application and the
instructions file.
Step 3
Run Multi Discovery. In the menu
PROTOCOL
choose the
option “IP Audio Module” and press
DISCOVER.
Step 4
Enter the IP address reported by Multi Discovery in an In-
ternet browser (eg Firefox, Chrome). The 542 AoIP Con-
trol Panel will appear on the screen.
It is also possible to 'double-click' with the mouse on the
item and the Internet browser with that IP address will
open.
Step 5
At the transmitting plant, the 542APC works as a passive
receiver and receives streaming from Studios. Only the
Audio Processing Core - SOLIDYNE 542 APC Page 39