HP 3325A Synthesizer Function Generator Precision Signal Source Tested

Grade C, the item is in good overall condition; it has some scratches and stains, see photos. Item has been tested for key functions. Evaluated as not containing data or non-data device.

Key Features:

- Wide Frequency Range: Generates signals from 1 µHz to 21 MHz, with extremely fine resolution down to 1 µHz below 100 kHz and 1 mHz up to 10 MHz.
- Multiple Waveforms:
- Sine waves up to 21 MHz
- Square waves up to 11 MHz
- Triangle / sawtooth up to 10 kHz
- Precision waveforms with synthesizer‑grade accuracy.
- High Signal Purity: Harmonics 65 dB down below 50 kHz, ensuring clean output for lab‑grade measurements.
- Advanced Phase Control: Phase adjustable ±719.9° with 0.1° resolution; supports multi‑unit phase locking.
- External Modulation: Supports AM and PM modulation via external reference input.
- Programmable Instrument: Fully programmable for automated test setups; includes HP‑IB (GPIB) interface.



Is ideal for:

- Electronics labs needing a precise, stable, wide‑range signal source.
- RF engineers working with high‑purity sine waves up to 21 MHz.
- Calibration and metrology environments requiring microhertz‑level resolution.
- Automated test systems using GPIB‑controlled instruments.
- Universities and research labs performing waveform analysis, modulation studies, or frequency response testing.
- Repair technicians needing a reliable, accurate function generator for troubleshooting analog/RF circuits.


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