Keysight 81160A - Trigger Modes

Tutorial
81150A and 81160A User’s Guide 613
Once the sequencing is started, there is no way to stop or restart the
sequence since the looped part of the pattern will simply be repeated
contiuously. If there is the need to have a restartable pattern with preamble
and looped payload, then set the Pattern Trigger Mode to BLOCK and enable
Burst Mode. In this case the preamble part of the pattern will be generated
once, while the payload part of the pattern will be repeated N time. With N
being the configured burst length. The sequence will stop after the burst has
reached the number of block repetitions and the 81150A / 81160A is
awaiting the next trigger event, which in turn will reset the sequence to the
start of the preamble and initiate another playback of the preamble and N
repetions of the payload.
7.4.3 Trigger Modes
Introduction
In continuous trigger mode, the pattern is continuously generated at the
output. If the loop offset is set to a non-zero value, the preamble part of the
pattern is generated only once.
The 81150A / 81160A is using the concept of ‘last cycle completed’ when
using triggered or gated modes, which means that a pulse, burst or arbitrary
waveform is always completed before the next trigger event or active gate
state will be processed.
When using pattern generation, the definition of a 'cycle' is selectable
between the entire pattern (a block) and a single bit. This allows to either
trigger one complete run of the pattern sequence being used, or to
trigger/gate each bit in the pattern sequence individually.
Note that in burst mode, a triggered/gated burst of bits does generate as
many bits as defined by the burst length, while a burst of 'blocks' does
generate as many repetitions of the pattern as the burst length defines.
In gated mode, the bit or block is always completed when the gate signal is
getting deasserted. After stopping, the output level will be held constant at
the last bits value.
The selection whether the pattern is being bit or block triggered is done on
the trigger mode screen.