Agilent Technologies U2781A - Manual (Page 27)

Features and Functions 2
U2781A User’s Guide 15
External Trigger In (Star Trigger)
The star trigger bus offers a very high performance or
precise synchronization between modules. The star trigger
bus is a dedicated trigger line between the External Trigger
Input and USB slots. This trigger signal is sent from external
to each slot through a 1- to- 6 CLK buffer. The slot- to- slot
skews are minimized to ensure that trigger signal reaches all
six slots simultaneously. Refer to the following figure for the
star trigger bus architecture illustration.
To set star trigger as the module trigger source, the following
SCPI command is sent to the modules:
OUTP:TRIG:SOUR STRG
Figure 2-3 Block diagram of the 10 Mhz Reference Clock and External
Trigger In
Star Trigger Bus
U2781A UG.book Page 15 Friday, November 25, 2011 10:51 AM