AHM-16/32 Getting Started Guide
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AP12764 Issue 1
DX168
DX164-W
Cascade Mode: ON
DX168
DX164-W
Cascade Mode: ON
DX164-W
Cascade Mode: ON
DX164-W
Cascade Mode: ON
DX164-W
DX164-W
6.2
Audio expanders and Ethernet
All protocols listed above are point-to-point connections, Ethernet Layer 2 compliant. gigaACE operates at
Gigabit Ethernet speed (1000BASE-T, IEEE 802.3ab). DX and dSnake operate at Fast Ethernet speed
(100BASE-TX, IEEE 802.3u).
Layer 2 network devices and media converters can be used, provided they support the correct link speed.
Typical applications include conversion to fibre optic for longer cable runs, or integration within an
existing Ethernet infrastructure. Refer to the following guidelines and always test the network for
functionality and reliability before putting into service. Further advice and notes on VLANs, TCP ports and
bandwidth are available on the online Allen & Heath Knowledgebase and website.
Layer 2.5 and higher protocols including Spanning Tree, Tagged Egress Packets,
and Broadcast Storm Protection can cause interruption to audio data or audible
clicks. Smart / managed switches may allow turning off Layer 3 or 4 functions, but as
a general rule we recommend using Layer 2 devices only.
Note that no other device should be plugged into a switch carrying gigaACE,
dSnake or DX audio. Parallel connection of multiple expanders on the same switch
is not possible.
6.3
Other SLink connections
The SLink card can be connected directly to another AHM processor, an SLink enabled Allen & Heath mixer
such as SQ or Avantis, or a dLive system fitted with a gigaACE card. This connection enables 128x128
channels of audio.
