User Manual 3153
Using The Instrument 3-48
Sequence Advance
Commands
The way the instrument advances through the sequence links and loops
and the source of the event causing sequence advance can be
specified by the user. Use the following command to control how the
sequence advances through the sequence table steps:
SEQuence:ADVance {AUTO | STEP | SINGle |
| SINGle1 | MIXed}
AUTO
specifies continuous advance where the generator steps
continuously to the end of the sequence table and repeats the
sequence from the start. For example, if a sequence is made of three
segments – 1, 2, and 3, and AUTO mode is used, the sequence will
generate an infinite number of 1,2,3,1,2,3,1,2,3…waveforms. Repeats
may be specified for each step in an AUTO sequence. AUTO is the
default sequence advance mode.
In
STEP
advance mode, the sequence is advanced to the next waveform
only when a valid trigger is received. The output of the model 3153
generates the first segment continuously until a trigger signal advances
the sequence to the next segment. If repeats were specified in the
sequence table, they are ignored in STEP advance mode.
In
SING
advance mode, the Model 3153 idles between steps until a valid
trigger signal is sensed. This advance mode is available when the 3153
is in triggered mode only. An attempt to select the SING advance mode
when the Model 3153 is in continuous operating mode will generate an
error. After a trigger, the generator outputs one (or more) waveform
cycle(s). Then, the output level idles at a DC level equal to the last point
of the last generated waveform. If loops (repeats) were programmed, the
segment is repeated n times automatically before it begins idling. After
executing all of the programmed loops the sequencer will step to the
next segment in the sequence when it receives its next valid trigger.
In
SING1
advance mode, the Model 3153 idles between steps until a
valid trigger signal is sensed. This advance mode is available when the
3153 is in triggered mode only. An attempt to select the SING1 advance
mode when the Model 3153 is in continuous operating mode will
generate an error. After a trigger, the generator outputs one waveform
cycle. Then, the output level idles at a DC level equal to the last point
of the last generated waveform. If loops (repeats) were programmed, the
sequencer repeats this segment each time a trigger is received, until the
number of repeats specified for this step has been reached. After
reaching this number, the sequencer advances to the next step in the
sequence.
MIX
mode is a special mode, which combines continuous advance with
triggered step advance in a sequence. There are three conditions that
must be met for the sequence generator to operate in this mode:
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
