The Hewlett-Packard 3588A is a swept-tuned spectrum
analyzer with a frequency range of 10 Hz to 150 MHz.
As such, the instrument is a general-purpose design
tool for measurement and evaluation of many electronic
devices. In addition, a built-in source (tracking
generator) lets you perform scalar network analysis
for filters, amplifiers, and other devices. You can
also operate the analyzer remotely, via the HP-IB,
to make automated measurements—a feature that’s particularly
useful for repetitive tasks (such as those encountered
in production-line testing).
The HP 3588A offers two measurement types—Swept Spectrum
and Narrow Band Zoom. Both provide excellent resolution
and operate at speeds far greater than conventional
analyzers. Swept spectrum measurements provide the
performance and features found in traditional
Hewlett-Packard swept-tuned analyzers, but incorporate
very sharp digital IF filters to provide improved
frequency resolution (down to 1.14 Hz). For narrow
band zoom measurements, the analyzer uses an implementation
of the Fast Fourier Transform to provide faster measurements
with even greater resolving power.
Faster measurements are possible with swept spectrum
measurements since the analyzer uses digital IF filters
With selectivity nearly twice that of analog filters,
digital filters offer faster measurements while still
resolving low-level carrier sidebands. Additionally,
the inherent predictability of digital filters permits
the analyzer to sweep even faster, using a built-in
correction algorithm. This provides increased measurement
speed (up to four times faster than conventional
swept-tuned analyzers for comparable measurements),
with no additional amplitude error or resolution loss.
Narrow Band Zoom provides the fastest spectrum measurements
(more than thirty times faster than swept-tuned analyzers
for comparable measurements), with resolution performance
unequalled by traditional technologies. Narrow Band Zoom
can be used for spans of 40 kHz and less, and is ideal
for narrowband analysis of close-in sidebands.