(
5.4 Changing(the(Settings(on(the(PTU(
5.4.1 Selecting(a(Reference(
From!the!menu,!select!“Reference”!from!the!settings!submenu.!!From!the!“Select!
Reference”!dropdown!menu,!select!your!input!source.!!For!1PPS-based!reference!
sources,!the!time!and!date!will!have!to!be!entered!manually.!!See!Figure!9!-!Available!
Reference!Sources!for!a!list!of!the!available!reference!sources!that!the!PTU!can!use.!