The 4Links Absolute Time Interface (ATI) enables all the 4Links test units in a test system to be synchronized to an accurate “Time of Year”, so that timing measurements can be made with any number of units, all sharing a common time reference.

The ATI also has a single SpaceWire port which, on the basic unit, outputs a 1 pulse per second SpaceWire Time Code. The Time-code Generator option (TG) enables the ATI to output up to four independent and configurable Time Codes, all synchronized to Time of Year.