62. Installing and Connecting2.7.3 Network SettingsNAC-N preamplifiers are set up when originally shippednot to require any network configuration but to connect tonetworks automatically (DHCP is used by default). However,if your NAC-N preamplifier has been previously used, itsnetwork configuration may have been altered leaving itunable to connect automatically. If this appears to be thecase ensure that DHCP is selected in the Network Settingsmenu and re-start the unit. If the problem still persistscarry out a Factory Reset operation (by selecting Reset AllSettings from the Factory Settings setup menu) and tryagain.Note: Wireless configuration data and user radio presetswill be deleted during the Factory Reset operation.2.8 BluetoothNAC-N preamplifiers are able to play Bluetooth audiostreams from Bluetooth capable devices incorporatingan appropriate audio playback app. The Bluetooth aerialsupplied must be fitted to the rear panel Bluetooth aerialsocket.Note: The Bluetooth aerial is the shorter of the twosupplied.2.9 System AutomationNAC-N preamplifiers can be linked using SystemAutomation to control some Naim CD players. This enablesa Naim CD player to be controlled from the Naim iOS andAndroid app.To take advantage of System Automation, connect theNAC-N preamplifier rear panel Remote Out socket to theCD player Remote In socket. Use a cable terminated with a3.5mm jack plug at one end and a 3.5mm jack or phono plugas necessary at the other end.Note: Stereo and mono 3.5mm jack to 3.5mm jack can beused for System Automation. If a stereo 3.5mm jack tophono plug cable is used, connect the left channel phonoplug.Note: System Automation is switched off by default. A fulldescription of its configuration and use can be found inSection 4.12.2.10 Control and Update SocketsNAC-N preamplifiers are fitted on their rear panels withremote control and update interface sockets.• In addition to System Automation (see Section 2.9) theRemote In and Out sockets can be used for RC5 remotecontrol via a wired connection or a remote IR repeater.• The Mini-USB socket enable firmware upgrades anddiagnostic tests to be carried out. Contact your Naimretailer for more information if required.Note: The mini-USB interface is not intended for theconnection of USB memory devices.