Keysight U2781A, User Manual, Page: 27 / 45

Features and Functions 2
Keysight U2781A User’s Guide 27
Trigger Bus (TRIG [0..7])
Trigger Bus (TRIG [0..7]) is an 8-bit digital bus connected from slot 1 to slot 6 to
synchronize different USB modules. This trigger bus enables the USB modules of
passing trigger signals to one another.
To have one of the modules to control the operation of the other modules, set the
particular module as MASTER and the rest as SLAVE (refer to Simultaneous
Synchronization (SSI) for more details). The control signal is sent from the
MASTER module to the SLAVE modules through this trigger bus. See following
figure for the bus architecture.
Figure 2-2 Block diagram of Trigger Bus (TRIG [0..7]) and Trigger Out
In addition, the trigger bus can also be used to carry out the pre-configuration of
the chassis and modules before any triggering activities. Refer to Identifying
Modules Location for more information.
TRIG [0..7]