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Function Generator DS335 ... from $1395
DS335 3 MHz function generator
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DS335 Function Generator
  • 1 µHz to 3.1 MHz frequency range
  • 1 µHz frequency resolution
  • Sine, square, ramp, triangle & noise
  • Phase continuous sweeps
  • FSK modulation
  • 10 Vpp into 50 Ω
  • RS-232 and GPIB
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.
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DS335 Function Generator

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.

Basic functions include sine waves and square waves up to 3.1 MHz, and ramps and triangles (up to 10 kHz). A 3.5 MHz 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 unidirectional and bidirectional sweeps can be selected.

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 50 kHz, or externally via a rear-panel input.

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

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.

 

Phone: (408)744-9040 • Fax: (408)744-9049 • email: info@thinkSRS.comwww.thinkSRS.com

DS335 Function Generator
Frequency range
  Max. Frequency Resolution
Sine 3.1 MHz 1 µHz
Square 3.1 MHz 1 µHz
Ramp 10 kHz 1 µHz
Triangle 10 kHz 1 µHz
Noise 3.5 MHz (Gaussian weighting)
Amplitude
Range 50 mVpp to 10 Vpp (50 Ω), 100 mVpp to 20 Vpp (High-Z)
Resolution 3 digits (DC offset = 0V)
Offset ±5 VDC (50 Ω), ±10 VDC (High-Z)
Offset resolution 3 digits
Accuracy 0.1 dB (sine output)
Sine Wave
Spurious response <-65 dBc to 1 MHz, -55 dBc to 3.1 MHz
Harmonic distortion
     DC to 100 kHz <-60 dBc
     100 kHz to 1 MHz <-50 dBc
     1 MHz to 3 MHz <-40 dBc
Phase noise <-60 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 <5 % (full-scale output)

Ramps and Triangles

Rise/fall time 100 ns
Linearity ±0.1 % of full scale
Settling time 200 ns (0.5 % of final value)
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. All instrument functions are controllable over the interfaces.
Non-volatile memory Up to nine sets of instrument settings may be stored and recalled.
Dimensions 8.5" × 3.5" × 13" (WHL)
Weight 8 lbs.
Power 22 W, 100/120/220/240 VAC, 50/60 Hz
Warranty One year parts and labor on defects in materials and workmanship
 
 
 
 
Phone: (408)744-9040 • Fax: (408)744-9049 • email: info@thinkSRS.comwww.thinkSRS.com