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9. DN9340E AND DN9344E MASTER/SLAVE REMOTE CONTROL
A DN9340E master unit can control multiple DN9340E and DN9344E units as slaves.
Note
For more details on linking units together and remotely control from a
PC, see Section 10.
9.1. Connections
In order to set up a master/slave network Helix system, first connect the units together using the
Ethercon connectors on the rear panel, as shown in Section 10.2.
9.2. Addresses
The network uses a system of addresses to identify which unit is being controlled. The Helix system
supports addresses from 1 to 32. A DN9340E unit has one address and a DN9344E has two
addresses, corresponding to the left-hand pair of channels (Section 1) and the right-hand pair of
channels (Section 2), respectively. The reason for having two addresses to communicate with each
DN9344E is to allow systems to be built up from either DN9340E (two audio channels) or DN9344E
(four audio channels) in any combination. At any time, two DN9340Es can be replaced by a single
DN9344E (or vice versa) without any need to change the addressing of the system.
9.3. Data model
Each Helix unit has a working memory which is the current state of the unit as seen on the front
panel - this also corresponds to the sound that is currently being heard. In addition, there are 32
user and 32 preset memories in each DN9340E and in each pair of channels in a DN9344E.
• Issuing a store command to a unit will copy the working memory into the selected user
memory on that unit.
• Issuing a recall command will copy the selected user or preset memory into the
working memory on that unit.
When using remote control, the Master unit holds a local copy of the working memory for each slave
that is connected. This allows fast switching between units being controlled. When the system is set
on-line, the user can choose whether to “Get all” data from the slaves or to “Set all” data from the
master. This allows the settings for up to 64 channels of audio to be stored in a single DN9340E or,
conversely, an “empty” master DN9340E can be connected to a system that is already running and
upload the system data.