Keysight Technologies N8241A, Руководство пользователя

Страница: 74 / 125

Chapter 3 75
Theory of Operation
Waveform Playback
Waveform Advancement
In basic sequencing, waveforms always advance to the next waveform automatically
after the specified number of repetitions. With advanced sequencing, waveforms can
be configured to advance in one of four ways:
• Automatic
The waveform automatically advances to the next waveform after completing
the specified number of loop repetitions.
• Continuous
The waveform loop is repeated continuously until a trigger is received. The
current loop is finished before advancing to the next waveform. The waveform
loop repetition count is ignored.
• Single
The waveform loop plays once and waits at the end of the loop for a trigger. The
waveform loop is repeated for each trigger until the number of waveform loop
repetitions is met. The next trigger will advance to the next waveform. When the
waveform loop repetition count is one, a single trigger will advance to the next
waveform. While waiting for a trigger, the last value of the waveform loop
continues to play.
•
Repeat
The waveform loop repeats until the number of waveform loop repetitions is
met.
Scenario Jump Mode
The scenario jump mode determines how the play table responds to a scenario jump
input. There are no discontinuities in a scenario jump, other than those imposed by
the waveform data. A scenario jump has very predictable behavior. For scenario
jumping to be valid, the scenario length must be equal to or greater than the jump
immediate latency.
There are three types of jump modes:
• Immediate
The scenario starts or jumps immediately with latency.
• End of Waveform
The current waveform, including repeats, is completed before jumping to the
new scenario.The jump latency is the longer of either the jump immediate
latency or the length of the remaining part of the current waveform. If the
remaining part of the scenario is less than the jump immediate latency, the
scenario is repeated one more time before jumping.