ASHLY ne24.24M [6/28] Rear panel features

Operating Manual - ne24.24M Matrix Processor

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 dened 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.