Based on a direct digital synthesis architecture
The DS335 is a simple, low-cost, 3MHz function generator from Stanford Research Systems designed for general benchtop or ATE applications. Based on a Direct Digital Synthesis (DDS) architecture, the DS335 includes features not normally found in function generators in this price range.
Features:
Basic functions include sine waves and square waves up to 3.1MHz, and ramps and triangles up to 10kHz. A 3.5MHz Gaussian white-noise generator is also provided. All functions can be swept logarithmically or linearly in a phase-continuous fashion over the entire frequency range. A rear-panel SWEEP output marks the beginning of a sweep to allow synchronisation of external devices. Both unidirectional and bidirectional sweeps can be selected.
Both internal and external FSK modes allow the output frequency to be rapidly toggled between two preset values. Toggling is done either at a fixed, internal rate of up to 50kHz, or externally via a rear-panel input.
Outputs have the low phase inherent to DDS. Wide-band amplifiers maintain good pulse response and provide low distortion. The result is an output capable of driving 10Vpp into a 50 Ω load, or 20Vpp into a high-impedance load.
Both GPIB and RS232 interfaces are available to provide complete control via an external computer. All instrument functions can be set and read via the computer interface.
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