# Stanford Research Systems DS340 15 MHz Function/Arbitrary Waveform Generator (Pre-Owned) # Stanford Research Systems DS340 15 MHz Function/Arbitrary Waveform Generator (Pre-Owned) ## Key Features At A Glance - 1 µHz to 15.1 MHz sine and square output; ramps and triangles to 100 kHz - 1 µHz frequency resolution on all functions - Direct Digital Synthesis of sine, square, ramp, triangle, and 10 MHz Gaussian noise - Phase-continuous linear and logarithmic sweeps with rear-panel sweep trigger output - Arbitrary waveforms of 8 to 16,300 points at 12-bit resolution, played back to 40 Msamples/s - Internal and external FSK modulation (internal toggling to 50 kHz) - Optional GPIB and RS-232 interfaces with arbitrary waveform software (Option 01) - Output floats up to ±40 V (AC+DC); 50 mVpp–10 Vpp into 50 Ω The Stanford Research Systems DS340 is a 15 MHz function and arbitrary waveform generator based on Direct Digital Synthesis (DDS). It produces sine and square waves at frequencies up to 15.1 MHz, ramps and triangles up to 100 kHz, and includes a 10 MHz Gaussian white-noise generator. Frequency resolution is 1 µHz for every function, and the combination of features, performance, and low cost suits the DS340 to a variety of test and measurement applications. A function and arbitrary waveform generator supplies the known, controllable stimulus signals that bench and automated measurements depend on. Beyond its standard waveform set, the DS340 offers phase-continuous frequency sweeps for characterizing response over a band, FSK modulation for toggling between two preset frequencies, and downloadable arbitrary waveforms for reproducing custom signal shapes. ValueTronics stocks and holds its own inventory in a 20,000-square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every pre-owned unit is inspected and functionally verified in-house before it ships, while new units ship factory-sealed exactly as received from the manufacturer. ## Product Core & Specifications Specification Value Frequency Range Sine, max. frequency 15.1 MHz Square, max. frequency 15.1 MHz Ramp, max. frequency 100 kHz Triangle, max. frequency 100 kHz Noise 10 MHz (Gaussian weighting) Arbitrary 10 MHz, 40 MHz/N (sample rate) Frequency resolution (all functions) 1 µHz Output Source impedance 50 Ω Grounding Output may float up to ±40 V (AC + DC) Amplitude range 50 mVpp to 10 Vpp into 50 Ω, 100 mVpp to 20 Vpp into Hi-Z Amplitude resolution 3 digits (DC offset = 0 V) Offset ±5 VDC (50 Ω), ±10 VDC (Hi-Z) Offset resolution 3 digits Accuracy 0.1 dB (sine output) Sine Wave Spurious response < −65 dBc to 1 MHz (increasing by 6 dB/oct above 1 MHz) Harmonic distortion, DC to 20 kHz < −70 dBc Harmonic distortion, 20 kHz to 100 kHz < −60 dBc Harmonic distortion, 100 kHz to 1 MHz < −50 dBc Harmonic distortion, 1 MHz to 15 MHz < −40 dBc Phase noise < −55 dBc (30 kHz band centered on carrier) Square Wave Rise/fall time <15 ns ± 5 ns (10 % to 90 %) Asymmetry <3 ns + 1 % of period Overshoot <2 % (full-scale output) Ramps and Triangles Rise/fall time 45 ns (10 MHz Bessel filter) Linearity ±0.1 % of full scale Settling time 200 ns (0.5 % of final value) Arbitrary Waveforms Sample rate 40 MHz or integer sub-multiples Waveform length 8 to 16,300 points Vertical resolution 12 bits Rise/fall time 45 ns (10 MHz Bessel filter) FSK Modulation Modes Internal, External Max. rate 50 kHz, internal External FSK TTL input, 1 MHz (max.) Sweeps Type Linear and logarithmic (phase continuous) Span Linear (full frequency range), log (6 decades) Sweep rate 0.01 Hz to 1 kHz Timebase Accuracy Standard ±5 ppm (20 °C to 30 °C) Optional TCXO, 2 ppm stability, 2 ppm aging (20 °C to 50 °C) General Interfaces Optional RS-232 and GPIB with DOS based arbitrary waveform software (AWC). All instrument functions can be controlled over interfaces. Non-volatile memory Up to nine sets of instrument settings can be stored and recalled. Dimensions 8.5" × 3.5" × 13" (WHD) Weight 8 lbs. Power 35 W, 100/120/220/240 VAC, 50/60 Hz Warranty One year parts and labor on defects in materials and workmanship > **Important:** Output may float up to ±40 V (AC + DC). > **Important:** Arbitrary waveforms (up to 16,300 points) can be downloaded to the DS340's waveform memory only via the optional GPIB or RS-232 interfaces (Option 01); these interfaces and the arbitrary waveform software are not included with the standard instrument and must be ordered separately. ## About this Pre-Owned unit This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects. - Backed by a ValueTronics warranty. - Functional verification included. - Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data. - Note that unnecessary accessories may not be included (contact Test Architect to confirm). ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application. **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 0.0 USD - 337.5 USD - **Vendor:** Stanford Research Systems - **Type:** Func Gen - **Tags:** Function, Manufacturers, product_manual_group_1, Product_used, Signal Generators, Stanford Research ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 225.00 USD | In stock | | NIST Traceable with Full Data | 300.00 USD | In stock | | ISO IEC 17025 Accredited | 337.50 USD | In stock | ## Images - Stanford Research Systems DS340 15 MHz Function/Arbitrary Waveform Generator (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/ds340-stanford-research-function-generator-used) > Updated: 2026-06-27