Time and Waveform
Time record characteristics
In the 89601A software, measurements are based on
time records (for example, blocks of waveform samples
from which time, frequency and modulation domain data
is derived.) Time records have these characteristics:
Time record length = (number of frequency points – 1)/span,
with RBW mode set to arbitrary, auto-coupled
Time sample resolutions = 1/(k x span)
Where k = 1.28 for time data = zoom
Time capture characteristics
In time capture mode, the 89601A software captures
the incoming waveform in real time (i.e. gap free)
into high speed time capture memory. This data may
then be replayed through the software at full or
reduced speed, saved to mass storage, or transferred
to another software application.
When post-analyzing the captured waveform, users
may adjust measurement span and center frequency
in order to zoom in on specific signals of interest, as
long as the new measurement span lies entirely
within the originally captured span.
Time capture memory size 500 ksamples (complex samples for spans
≤ 5 MHz; real samples for spans > 5 MHz)
Time capture length versus span 5 ms, 5 MHz < span ≤ 22 MHz
50 ms, spans ≤ 5 MHz
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