Specifications

Using the DMM and ARB 77Chapter 4
only the waveform using the first sequence is downloaded.
next_sequence - Specifies which sequence is to be downloaded next. An
example is in Figure 4-9.
sequence_repeat - Specifies if the sequence is to be repeated (i.e., value
is set to “1” or more), as shown in Figure 4-10.
nr_segments - Specifies the number of segments for each sequence. If
the number of specified segments is lower than the number of
segments entered in the corresponding sequence of the ‘voltage’
parameter, only the number of segments specified here will be
downloaded. Figure 4-11 shows a typical example.
segment_dwell - Specifies for how many 2 µS clock cycles each
segment of a sequence is to be output. Normally, each segment is
output in a single 2 µS clock cycle (if the parameter is set to “0”),
which is a dwell count of “0”. Setting the ‘segment_dwell’ to a
number above zero, the clock cycles will increase by that new number
plus a single clock cycle.
Since the number of segments and the duration time of the segments
determines the waveform frequency, each additional number added to
‘segment_dwell’ lowers the waveform frequency.
For example, if the dwell count is 0, for a 20 segment waveform, the
total time the segments are output is:
20 * 2 µS = 40 µS = a frequency of 25 kHz
Changing the dwell count to 49, changes the time and resultant
waveform frequency to:
20 * ((49 * 2 µS) + 2 µS) = 20 * ((98 µS) + 2 µS) = 20 * 100 µS =
0.002 S = a frequency of 500 Hz.
An example of using the ‘segment_dwell’ parameter is in Figure 4-12.
In the figure, the dwell count is 49 for two 20 segment sequences
which gives a total waveform frequency of 250 Hz.
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