AEQ
NETBOX 32 AD / NETBOX 8 AD / NETBOX DSP
Audio over IP multichannel interfaces
30
In order to change the default configuration of a GPO closing and opening you must press the
associated button, that will change from "HIGH" to "Low" or vice versa, although changes will
not be applied until you press the "Change Polarity GPO" button. Confirmation is requested.
In the case of NETBOX 8 there are only 4 GPI’s and 4 GPO’s available, so that only 4
numbered buttons are shown in each section:
The voltage and current limits for external power supply of GPO are 200 volts and 120mA.
The unit provides a +5V voltage in order to make easier GPO’s cabling when the receiver unit
accepts logical levels and needs low charge levels. In order to use the voltage provided by the
unit, you have to connect the floating ground of GND pin to the connector chassis. A device with
a consumption lower that 3mA can be connected between GPO pin and the one with +5V
voltage.
When a GPI is activated in the unit (the circuit between the corresponding pin and the ground
pin gets closed), the corresponding button in "GPI’s" section will light in amber. This GPI will be
also transmitted through the network to all the IP addresses configured in "Remote IP"
submenu (see section 7.2.4 of this manual). In order to activate a GPI with internal voltage, you
have to connect the floating ground to the connector chassis.
3.2.2.3. "DIGITAL IO" submenu.
"DIGITAL" submenu, accessed from the drop-down menu "Administration" by clicking on the
corresponding icon, gives access to an information window where you can check the digital
inputs and outputs format. These inputs and outputs are configured as AES/EBU by default and
can be configured as SPDIF by changing some internal jumpers.
