5NAC-N 172 XS Installation and Connection2.8.3 Network SettingsThe NAC-N 172 XS is set up when originally shipped not torequire any on-site TCP/IP configuration but to connectto a network automatically (it uses DHCP by default).However, if your NAC-N 172 XS has been previously used,its network 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 (see Section 4.6 of this manual) and re-start theNAC-N 172 XS. If problems still persist contact your retailer,installer or Naim Audio directly.Note: Before reporting network connection problems carryout a Factory Reset operation. Select Reset All Settingsfrom the Factory Settings setup menu. See Section 4.11.Note: A NAC-N 172 XS switched on without a workingwired network connection will only be able to connectto a home network wirelessly. To use an Ethernet (wired)connection, switch the NAC-N 172 XS off, connect thenetwork and switch it on again.Note: For internet radio to operate, the NAC-N 172 XSrequires connection to a broadband internet service.2.9 System AutomationThe NAC-N 172 XS can be linked using System Automationto control some Naim CD players. This enables a Naim CDplayer to be controlled from the n-Stream iPhone and iPadApp.To take advantage of System Automation, connect theNAC-N 172 XS rear panel Remote Out socket to the CDplayer Remote In socket. Use a cable terminated with a3.5mm jack plug at one end and a 3.5mm jack or phonoplug as necessary at the other end.Note: Stereo and mono 3.5mm jack to 3.5mm jack canbe used 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 4.10.2.10 External Control and InterfaceThe NAC-N 172 XS is fitted on its rear panel with a 3.5mmjack Remote In socket and a mini-USB interface socket.The Remote In socket can be used for RC5 remote controlof the NAC-N 172 XS via a wired connection or a remote IRrepeater.The mini-USB socket enables 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.