Stanford Research Systems DS300 Series
4 models with full specifications from Stanford Research Systems.
The Stanford Research Systems DS300 series comprises synthesized function and arbitrary waveform generators designed for precision electronic test and measurement. Incorporating Direct Digital Synthesis (DDS) architectures, these instruments provide high-resolution, phase-continuous waveforms with excellent frequency accuracy. The series includes the DS335, DS340, DS345, and DS360 models. While sharing a common design philosophy of reliable signal generation, each model is tailored for specific performance requirements, ranging from standard low-frequency functions to high-frequency arbitrary generation and ultra-low distortion audio-band signal analysis.
- Technology
- Direct Digital Synthesis (DDS)
- Frequency Resolution
- Up to 1 µHz
- Standard Waveforms
- Sine, Square, Triangle, Ramp, Noise
- Operating Temperature
- 0°C to 50°C
Models in this series
| Model | Type | Amplitude Resolution | Dimensions (W×H×D) | Frequency Accuracy |
|---|---|---|---|---|
| DS335 | Function | 3 digits | 216 mm × 89 mm × 330 mm | ±5 ppm (0°C to 50°C) |
| DS360 | Function | 3 digits | 432 × 89 × 413 mm (17" × 3.5" × 16.25") | ±25 ppm (0.0025%) |
| DS340 | Function | 3 digits | 216 mm × 89 mm × 330 mm | ±5 ppm (0 °C to 50 °C) |
| DS345 | Arbitrary | 3 digits | 216 × 89 × 330 | ±5 ppm (20 °C to 30 °C) |
DDS Architecture and Frequency Performance
The core of the DS300 series is its Direct Digital Synthesis architecture, which allows for precise frequency control and high resolution. The DS335, DS340, and DS345 all feature a frequency resolution of 1 µHz. Frequency limits vary across models to address different application spaces. The DS335 supports sine and square waves up to 3.1 MHz. The DS340 extends this range up to 15.1 MHz, while the DS345 offers the highest frequency capability in the series, generating sine and square waves up to 30.2 MHz. For audio and lower frequency precision, the DS360 operates from 10 mHz to 200 kHz with a resolution of 6 digits or 10 mHz.
Waveform Options and Arbitrary Generation
Standard waveform capabilities differ by model. The DS335 and DS345 generate standard sine, square, triangle, and ramp waves, alongside a 10 MHz noise source. The DS340 adds user-defined arbitrary waveform capabilities with a sampling rate up to 40 MSamples/s, 12-bit vertical resolution, and a maximum waveform length of 16,300 points. The DS345 also supports arbitrary waveform generation. For applications requiring extreme signal purity, the DS360 utilizes a 20-bit D/A converter and dedicated analog circuitry to deliver ultra-low distortion signals, achieving a typical total harmonic distortion (THD) of -110 dB at frequencies below 5 kHz.
Output Specifications and Mechanical Configurations
Output characteristics are tailored to specific test environments. The DS335 provides an amplitude range of 50 mVpp to 10 Vpp into 50 Ω. The DS345 offers an output from 10 mVpp to 10 Vpp with a floating range up to ±40 V relative to earth ground. The high-precision DS360 provides balanced outputs from 20.0 µVpp to 80.0 Vpp and unbalanced outputs from 10.0 µVpp to 40.0 Vpp. Mechanically, the DS335, DS340, and DS345 share a compact benchtop form factor with dimensions of 216 mm × 89 mm × 330 mm, while the DS360 is wider and deeper, measuring 432 mm × 89 mm × 413 mm.
Frequently asked questions
- Which DS300 series models support arbitrary waveform generation?
- The DS340 and DS345 models support arbitrary waveform generation, allowing user-defined playback.
- What makes the DS360 unique compared to other models in the series?
- The DS360 is optimized for ultra-low distortion audio applications, utilizing a 20-bit D/A converter to achieve a typical THD of -110 dB below 5 kHz.
- What is the standard frequency resolution for most DS300 models?
- The DS335, DS340, and DS345 all feature a standard frequency resolution of 1 µHz.