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DS335 Function Generator

DS335 Function Generator
  • Frequency output from 1µHz to 3.1 MHz
  • Sine, square, ramp and noise output
  • 10 Vpp into 50 Ω, 20 Vpp into High-Z
  • Linear and log frequency sweeps
  • 1 µHz frequency resolution
  • FSK modulation
  • Optional RS-232, GPIB interfaces
  • Optional 2 ppm TCXO timebase
Specifictions

The DS335 is a simple, low-cost, 3 MHz function generator 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.

A Versatile Function Generator

Basic functions include sine, square (up to 3.1MHz) and ramps and triangles (up to 10kHz). You can set the frequency of any function with 1 µHz resolution. Frequency accuracy is 5 ppm with the standard timebase and 2 ppm with the optional TCXO timebase. 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 synchronization of external devices. Both uni-directional and bi-directional sweeps can be selected, as well as single-shot and repetitive sweeps.

FSK Modulation

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.

Distortion Outputs

Outputs have the low phase noise inherent to DDS. Wideband amplifiers maintain good pulse response and provide low distortion. The result is an output capable of driving 10 Vpp into a 50 Ω load with only a 15ns risetime, or 20 Vpp into a high-impedance load.

GPIB and RS-232

Both GPIB and RS-232 interfaces are available to provide complete control via an external computer. All instrument functions can be set and read via the computer interfaces.