Product Manual

291, 292, 294
Users Manual
Pressing the SEQUENCE key calls the initial SEQUENCE screen:
SEQUENCE segs= 1
sequence setup…
stop run
A previously-defined sequence can be run and stopped from this screen using the
run
and stop soft keys; sequence can also be switched on from the
STANDARD WAVEFORMS
screen with the sequence soft key. The segs= field
shows the number of segments in the sequence; there is always at least 1 segment.
Sequence Set-Up
Pressing the sequence setup… soft key on the SEQUENCE screen (or the
setup…
soft key next to sequence on the STANDARD WAVEFORMS screen) calls the
sequence set up screen:
seg: 0002 off
wfm WFM3
step on: count
cnt: 00001 done
Repeated presses of the seg soft key steps the display through the set-ups of each of
the 1024 segments of the sequence. With the exception of segment 1 which is always on
(and therefore has no
on-off soft key) the segment set-ups are identical in format. When
segment 1 is displayed the
segs= field shows the total number of segments in the
current sequence.
The segment to be set up is selected with the seg soft key; the segments can be
selected in sequence with repeated presses of the soft key, by using the rotary control or
by numeric entry.
Once the segment to be edited has been set the waveform for that segment is selected
with the
wfm (waveform) soft key; the list of all arbitrary waveforms already created is
stepped through with repeated presses of the
wfm soft key or by using the rotary
control.
The criterion for stepping between waveform segments is set by the
step on soft key.
The default setting is
step on: count which means that the waveform will step on
to the next segment after the number of waveform cycles specified in the
cnt (count)
field; up to 32,768 cycles can be set with
cnt selected, using direct keyboard entries or
using the rotary control.
Alternatively, the step on criteria can be set to
trig edge or trig level in the
step on
field; trigger edge or trigger level can be mixed with count (i.e. some
segments can step on count, others on the specified trigger condition) but trigger edge
cannot be mixed with trigger level in the same sequence.
If
trig edge is selected the sequence starts running at the first waveform segment
when sequence is set to
run and steps to the following segments in turn at each
subsequent trigger. The trigger source can be any of the settings selected on the
TRIGGER IN
set-up screen (called by the TRIG IN key); these are described fully in
9-12