Keysight M8190A - 3.1.3 Sequencer Granularity; 3.2 Sequencing Hierarchy

Sequencing 3
M8190A User’s Guide 91
3.1.3 Sequencer Granularity
The sequencer is running at a lower clock speed than the sample rate of the instrument.
Therefore the sequencer has to play multiple samples within one sync clock cycle.
The number of samples played within one sync clock cycle is called sequencer
granularity or segment granularity. For details, refer to the block diagram in section
1.5.1.
3.2 Sequencing Hierarchy
3.2.1 Segment
A waveform segment consists of a defined number of samples, which are played, in a
consecutive order. It is treated as a unit and can be repeated a specified number of
times or can run continuously. The sample count of segments must be in multiples of
the sequencer granularity. A minimum length is also required (see datasheet of the
instrument).
A segment can be played standalone (see Arbitrary Mode) or can be part of
a sequence.
3.2.2 Sequence
Multiple segments can be combined to a sequence. A sequence can be executed
continuously or for a specified number of times.
Segment 1 Segment 2 Segment 3
Start
Trigger
Repeat Count 1 Repeat Count 2 Repeat Count 3
Sequence
Sequence Repeat Count (continuously or “n” times)
Figure 3-2: Sequence