9. Start the measurement and view the results:
Press [
A], [Meas Restart].
The arbitrary source is now generating your signal.
Waterfall and spectrogram displays store trace data in the trace buffer.
Both displays use the same trace buffer, therefore it doesn’t matter which
display you use when you save the trace buffer. The [
buffer depth] softkey
determines the size of the trace buffer. For example, a buffer depth of 20
means the trace buffer can contain up to twenty traces, regardless of how
many traces are displayed.
If the analyzer displays OUT OF MEMORY when you try to save data into
a data register, you need to reconfigure the analyzer’s memory. You may
want to press [
System Utility], [options setup] to see if your analyzer has option
UFG. Option UFG adds an additional 4 MB of memory (and LAN
capability) to your analyzer.
HINT A good way to increase the amount of memory available for data registers is to
reduce [
max freq points]. The value of this softkey determines the maximum
number of points in a trace and also reserves memory for other internal
operations. Press [
System Utility], [memory usage], [configure meas memory], [max freq points]to
change this parameter.
The arbitrary source may not be able to use all data in the data register.
The arbitrary source can use up to 16,384 samples of real or complex data.
Under certain conditions, the arbitrary source can use up to 32,768 samples
of real or complex data (see ‘’To output the maximum number of samples’’
later in this chapter).
In this example, the data
register contains 20 traces.
The value of [buffer depth]
determines the number of
traces saved to the data
register.
Creating Arbitrary Waveforms
6-5
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