To Output The Maximum Number Of Samples - Agilent Technologies 89410A Operator's Manual

Creating Arbitrary Waveforms

To output the maximum number of samples

You use time-domain data (samples) in a data register to drive the
analyzer's arbitrary source. The arbitrary source can use up to 16,384
samples. If the samples were created using a cardinal frequency span, the
arbitrary source can use 32,768 samples.
The number of samples you can save to a data register may be limited by
memory configuration. The analyzer displays OUT OF MEMORY if there is
insufficient memory when you try to save data into a data register.
HINT
A good way to increase the amount of memory available for data registers is to
reduce [ ]. The value of this softkey determines the maximum
max freq points
number of points in a trace and also reserves memory for other internal
operations. Press [ ], [ ], [ ], [ ] to
System Utility memory usage configure meas memory max freq points
change this parameter.
It's possible for a data register to contain more data (more samples) than
the arbitrary source can use. The maximum number of samples that the
arbitrary source can use is 16,384 samples. If you used a cardinal
frequency span to create the arbitrary waveform (to create the data in the
data register), the arbitrary source can use 32,768 samples. If you did not
use a cardinal frequency span, the maximum number of samples that the
arbitrary source can use will be between 16,384 and 32,768 samples.
If possible, use a cardinal frequency span to create your arbitrary
waveform. Spans slightly larger than a cardinal span slightly reduce the
number of samples that the arbitrary source can use. Increasing the
frequency span further reduces the number of samples that the arbitrary
source can use, the worst case being when the frequency span is just
below a cardinal span. Cardinal frequency spans are spans that fit the
following formula:
10 MHz
Cardinal Spans =
, where n is a whole number.
n
2
Based on this formula, cardinal spans are 10 MHz, 5 MHz, 2.5 MHz, and
1.25 MHz, and so on. For some instrument configurations, the maximum
frequency span is less than 10 MHz. For these configurations, use the
same formula to determine the cardinal spans and discard values that
exceed the maximum frequency span. For example, the maximum
frequency span of the external receiver is 7 MHz, in which case the
cardinal spans are 5 MHz, 2.5 MHz, 1.25 MHz, and so on.
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