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Genera! Information
Instrument Description
The HP 3325B Synthesizer/Punction Generator produces sine wave, square wave triangle
positive and negative ramp waveforms from 1 /xHz to a maximum frequency
of 20 Mhz for sme wave and 10 Mhz for square wave and 10 kHz for the triangle and ramp
^notions. (The .999 extensions are assumed.) Frequency resolution is 1 ^Hz or eleven digits.
Output amplitude is 1 mVpp to 10 Vpp. The output amplitude level may be entered or
displayed in Vnns or dBm (500) as well as Vpp. Any function may have a dc offset of up
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output may be dc-only up to ±5V An optional high voltage output produces
up to 40 Vpp into a load > 5000, s 500 pE
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The HP 3325B performs linear or log frequency sweeps in any of its waveforms at sweep
times of 10 ms to 1000s for linear sweeps. Log sweep times are from Is to 1000s for single
sweep and from 0.1s to 1000s for continuous sweeps. The direction of a single linear sweep
may be up or down. A continuous sweep moves back and forth between the start and stop
frequencies m an up/down/up/down/. . . fashion. Log sweeps always start at the start
frequency and sweep up to the stop frequency. Discrete sweep is a feature which allows
creation of custom sweep patterns.
The HP 3325B is fully programmable through two separate computer interface connectors
locked on the rear panel. They are the Hewlett-Packard Interface Bus (HP-IB) and
an RS-232 serial interface. A desktop computer can be configured and programmed to
remotely operate the ly 3325B with either of these two interfaces. Interface information is
in Chapter 2, Remote Operation.
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