Tabor Electronics 5251, User Manual, Page: 168 / 298

TE5251
User Manual
4-34
Sequenced
Waveforms
Control
Commands
This group is used to control the sequenced waveforms and their
respective parameters. This will allow you to create multiple
sequence table and modify segment loops and links. Also use these
commands to add or delete sequences from your instrument.
Factory defaults after *RST are shown in the Default column.
Parameter range and low and high limits are listed, where
applicable.
Generating Sequenced Waveforms
Sequenced waveforms are made of a number of arbitrary
waveforms, which can be linked and looped in user-programmable
order. Sequenced waveforms are generated from waveforms stored
in the 5251 as memory segments. Therefore, before a sequence
can be used, download waveform segments to the arbitrary
memory using TRAC# or DMA methods. Information on how to
partition the memory and how to download waveforms is given in
the section entitled
Generating Arbitrary Waveforms .
An example of how sequenced waveforms work is demonstrated in
figure 1-13 through 1-15. The sequence generator lets you link and
loop segments in user-defined order. Figure 1-16 shows a
sequence of waveforms that were stored in three different memory
segments.
There are a number of tools that you can use to build a sequence
table. The easiest way is of course to use the ArbConnection
program. Information how to use the ArbConnection program is
given in a later chapter. In other cases, SCPI programming allows
low-level programming of sequence tables.
In general, sequences can be build one step at a time using the
SEQ:DEF command. The one step method is slow and tedious
however, it allows better control for one who just begins his first
sequence programming. Advanced users can download a complete
sequence table using the binary sequence download option. The
later being much faster for applications requiring large sequence
tables. Use the information below to understand sequence
commands and how to implement them in your application.