Keysight U2781A User Manual

Keysight U2781A User Manual Manual pdf 29 page image

Features and Functions 2Keysight U2781A User’s Guide 29External Trigger In (Star Trigger)The star trigger bus offers a very high performance or precise synchronizationbetween modules. The star trigger bus is a dedicated trigger line between theExternal Trigger Input and USB slots. This trigger signal is sent from external toeach slot through a 1-to-6 CLK buffer. The slot-to-slot skews are minimized toensure that trigger signal reaches all six slots simultaneously. Refer to thefollowing figure for the star trigger bus architecture illustration.To set star trigger as the module trigger source, the following SCPI command issent to the modules:OUTP:TRIG:SOUR STRGFigure 2-3 Block diagram of the 10 Mhz Reference Clock and ExternalTrigger InStar Trigger Bus