Specifications
Operating Manual - ne24.24M Matrix Processor
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5. REAR PANEL FEATURES
5.1 Input Connections
Balanced input signals are connected to the ne24.24M using the included
euroblock connector. A at blade screwdriver is required to connect a stripped wire
lead to the external connector piece, which is then inserted into the rear panel Euro
Block receptacle. It is important that both (+) and (-) inputs are properly terminated
or signal loss and noise may result. In other words, if an unbalanced input signal is
used, connect the signal to the (+) input, and connect the ground wire to both the (-)
and ground connection.
5.2 Output Connections
Like the inputs, output connections are made using the included euroblock connector. All outputs are servo balanced,
and may be wired balanced or unbalanced. For unbalanced output connections, use (+) and ground and tie (-) to ground.
5.3 Expansion Modules
The ne24.24M base model is expandable by up to 16 additional inputs or outputs, as well as a single module card used
for eight general purpose logic outputs (GPO). Expansion modules of four inputs or four outputs each can be installed in any
expansion slot. Input expansion modules use green euroblock connectors, while output expansion modules use black connec-
tors. Removable metal plates cover unused expansion slots on the back panel. The optional Logic Output card (GPO) is used
to drive preset controlled relays or another device’s logic control inputs. The GPO comes with a function and wiring sticker
which must be placed on the ne24.24M back panel above the Input/Output slot where the GPO option is installed. Only one
GPO can be installed in a ne24.24M.
5.4 Logic Inputs (Preset Recall)
There are no user controls on the ne24.24M, making it ideal for permanent installations where security is an issue.
There may be times, however, where real time variables require changes in system settings, such as EQ, gain, and delay settings
changing when a room size changes. For these types of changes, the ne24.24M offers the ability to recall up to eight different
presets, or switch other events such as a mic input “push to talk” using contact closures. Contact closures are nothing more than
external, user installed switches that, when closed, recall a previously dened preset which applies changes to the settings of
all inputs and outputs. The switches can be anything from a rotary switch on a control room panel, to automatic door sensors
scattered throughout a conference center, to a microphone key switch, etc. Contact closures allow for exibility while maintain-
ing a high degree of system security.