The Keysight 33621A is a single-channel waveform generator delivering 120 MHz sine wave bandwidth and 1 GSa/s sampling rate. Built on Trueform signal generation technology—which combines Direct Digital Synthesis and point-per-clock architectures—it achieves jitter below 1 ps and 0.03% total harmonic distortion, eliminating measurement artifacts in circuit characterization and validation.
Technical Specifications
Signal Generation
• Bandwidth: 120 MHz (sine wave)
• Sampling Rate: Up to 1 GSa/s
• Arbitrary Waveform Memory: 4 MSa/channel standard; optional 64 MSa/channel
• Jitter: <1 ps (200× better than DDS generators)
• THD: 0.03% (5× better than DDS generators)
• Amplitude Range: 1 mVpp to 10 Vpp (50 Ω); 2 mVpp to 20 Vpp (open circuit)
• Amplitude Resolution: 14-bit
Waveforms & Modulation
• Standard Waveforms: Sine, Square, Ramp, Pulse, Triangle, Gaussian Noise, PRBS (PN3–PN32), DC
• Built-in Arbitrary Waveforms: Cardiac, Exponential Fall/Rise, Gaussian Pulse, Haversine, Lorentz, D-Lorentz, Negative Ramp, Sinc
• Modulation: AM, FM, PM, PWM, FSK, BPSK, Sum (carrier + modulation)
• Pulse Bandwidth: Up to 100 MHz; Rise/Fall Times: 2.9 ns; independently configurable edge times
• Noise: Band-limited with adjustable bandwidth
• Sequencing: Arbitrary waveform sequencing supported
Physical & Environmental
• Dimensions: 261.1 mm (W) × 103.8 mm (H) × 303.2 mm (D)
• Weight: 3.5 kg
• Operating Temperature: 0°C to 55°C
• Storage Temperature: –40°C to 70°C
• Operating Humidity: 80% RH to 40°C, decreasing linearly to 37.5% RH at 55°C (non-condensing)
– Key Features
• Trueform technology: Reduced jitter and harmonic distortion versus traditional DDS
• 14-bit amplitude resolution (4-digit precision)
• Pulse generation with independently set leading and trailing edge times
• Band-limited noise generation with user-adjustable bandwidth
• Standard PRBS patterns PN3 through PN32
– Typical Applications
Education, research, manufacturing, and design validation requiring high-fidelity signal generation without generator-induced measurement artifacts.
– Compatibility & Integration
• Connectivity: LAN (LXI Class C), USB; optional GPIB
• Front Panel USB: File management
• Remote Control: Web browser interface to built-in web page
• Software: Keysight BenchVue, I/O Library, IVI-COM, VEE, LabVIEW
