User Manual 3155
3-18 ArbConnection
and Adv. These elements are explained below.
Link #
– defines an index array for the sequence table. When gener-
ating sequences, the instrument steps though the link # in descend-
ing order. Make sure that you enter your waveform segments in ex-
actly the order you would like them at the output.
Loop(s)
– define how many times the segment will loop for the se-
lected link. For example, if you program 2, the waveform will cycle
twice through the same segment before transitioning to the next link.
Segment #
– associates waveform segments with links. You can use
different segments for different links or you can use the same seg-
ment for a number of links. There are no limitations how you associ-
ate links to segments, except that you cannot program in the se-
quence table segments that are not pre-defined.
Adv
– is a special code that is used in conjunction with the mixed
advance mode. This bit flags select whether or not the selected link
is continuous or stepped. Information on the Mixed sequence ad-
vance mode is given later. “0” selects continuous and “1” selects
stepped sequence advanced mode if the 3155 is in mixed sequence
advance mode.
Figure 3-7 shows an example of a 4-step sequence in which the first
link uses segment 1, which loops 20 times; segment 2, looping 500
times; segment 3 looping 25 times and segment 4, which loops 20
times. Also notice that the mixed mode advance flag has been as-
signed to segment 4. This flag will cause the sequence to stop on
segment 4 until the 3155 is triggered for the next sequence cycle if
the 3155 is in mixed sequence advance mode.
There are control buttons to the right of the sequence table. Use the
Append
button to add a step at the end of the sequence list. Use the
Insert
button to insert a step at the cursor location. The
Delete
but-
ton is used for deleting a step at the cursor position.
The
Clear All
button removes all steps from the table and lets you
design a sequence table from scratch.
Click on the
Close
to discard the contents of the Sequence Table
dialog box without saving your last actions. To remove the sequence
Table from the screen but click on the
Store
button to save your work
before closing the dialog box.
The
Download
button has a twofold function, it downloads the se-
quence table to the instrument and saves the contents of your table.
The next time you open this table, it has the same contents as were
saved in your previous session.
Summary of Contents for 3155
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