NXAMP4x1 & NXAMP4x4 User Manual - Nexo

GENERAL DESCRIPTIONIt is mandatory to have a galvanic isolation between these signals and anyanother equipment. Thus, either the target equipment should present isolated GPIOsystem, or the signal should goes through small signal relays to guarantee that the NXAMPGPIO will be isolated from the other equipment.The maximum current available on the GPIO port is the following:• Maximum 200 mA drawn from the totality of the +5 V outputs.• Maximum 200 mA drawn from the totality of the GP Outputs, with a maximum of32 mA for each output.Expansion slot blockThe expansion slot uses unique 80 pins connectors that will allow the user to simply fit anexpansion board into the amplifier. At the moment, the only expansion board available isthe NXES104 Ethersound board (compatible with the ES-100 standard, offering fullremote control from a computer running ES monitor by Auvitran application, and 4channels of 24 bits 48 KHz audio, from an ES network or from a PC computer through aLAN network using the Auvitran ASIO streamer technology).NEXO expansion slot form factor is not compatible with the Yamaha mini-YGDAIform factor. Thus, Yamaha mini-YGDAI card cannot be fitted inside NXAMP PoweredTDcontroller.Since July 2009, all NXAMP4x1s and NXAMP4x4s are shipped with an expansion card fittedin, the NX-DFLT card. This card prevents output noises when main AC power feedingNXAMPs is brutally shutdown (ie power down at the end of the show before NXAMPs areswitched off). NX-DFLT card should always be fitted in when no other expansion card isused.PAGE 31 OF 103