3152B User Manual
Publication No. 980935 Rev. A
generator. When generating sequences, the instrument steps
though the links in descending order therefore, make sure that you
enter your waveform segments in exactly the order you would like
them at the output.
Seg
- This parameter associates waveform segments with links.
You can use different segments for different links or you can use
the same segment for a number of links. There are no limitations to
how you associate links to segments except that you cannot
program assign segments to the sequence table that were not
defined previously.
Loops
– This parameter define how many times the segment will
loop for the selected link. For example, if you program 2, the
waveform will cycle twice through the same segment before
transitioning to the next link.
Adv
– This parameter flags the advance mode for the a
givensegment. This flag is active when the advance mode is
Stepped. When set to 0, the sequence will advance through the list
automatically until a segment that is flagged 1 is encountered.
When 1 is encountered, the generator will idle on this segment until
an external trigger is applied. Learn more about the sequence
advance modes in Chapter 3.
Figure 4-11 shows an example of a 4-step sequence of which the
first waveform is made of segment 2, which will loop 50 times;
segment 3, looping once; segment 1, looping 1200 times and
segment 4, looping once. The Adv bits on links 2 and 4 are set to 1
and therefore, external triggers are required for the sequencer to
step through these links.
Sync
– This parameter flags if a bit marker will occur on the
selected segment. Normal sync output is LCOM for the sequence
mode however, if you want to use shortened and/or multiple sync
pulses, change the sync output selection in the Arbitrary/Sequence
Panel to BIT and the output will generate a pulse every time the
sequence steps through a segment that has been flagged.
The control buttons on the left of the Sequence Table have the
same functionality as for the Segment Table.
Use the
Append
key to add a step at the end of the sequence list.
Use the
Insert
key to insert a step at the cursor location. The
Delete
key is used for deleting a step at the cursor position.
Click on the
Close
to discard of the contents of the dialog box
without saving your last actions and to remove the sequence Table
from the screen but click on the
Save
key if you want just to save
your work before you close the dialog box.
The
Download
key has double action, it will download the
sequence table to the instrument and will save the contents of your
table so the next time you open this table, it will have the same
contents as you saved in your previous session.
4-18 ArbConnection
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