B&K Precision 4047B Dual Channel Function/Arbitrary Generator

B&K Precision 4047B Dual Channel Function/Arbitrary Waveform Generator creates precise and stable sine, square, triangle, pulse, and arbitrary waveforms. The dual outputs of the 4047B are completely independent with individual on/off buttons and can both be varied from 0 to 10Vpp into 50Ω (up to 20Vpp into open circuits). The 4047B generator offers linear and logarithmic sweep capabilities, AM/FM/PM/FSK/PWM modulation, and a continuously variable DC offset to inject signals directly into circuits at the correct bias level. Separate output amplitude and DC offset amplifiers allow users to set a large DC offset (e.g. ±4.99V) with a small amplitude output signal (e.g. 10mV).

The 4047 B's dual architecture offers all the benefits of a combined DDS and a true point-by-point arbitrary waveform generator (AWG), minus the limitations of either technology. The DDS chip produces standard sine and triangle waveforms with high-frequency resolution. The true point-by-point AWG implementation improves signal integrity for arbitrary waveforms by producing significantly less jitter and distortion than a DDS-based architecture. Custom arbitrary waveform generation is accomplished with a variable clock signal to reproduce each point stored in memory without skipping or repeating data points.

The 4047B is designed to integrate with B&K Precision's waveform editing software WaveXpress easily. This allows users to generate complex arbitrary waveforms that can be output via the instrument's 14-bit, 125 MSa/s, 16kpts arbitrary waveform generator.



  • Dual-channel operation with each channel providing the rated amplitude (10Vpp) over the entire frequency range
  • Sine and square waveforms up to 20MHz
  • True point-by-point 14-bit, 125MSa/s, 16kpt arbitrary waveform generator
  • Bright color display with waveform preview
  • Synchronize the phase of both channels with the push of a button
  • Linear and logarithmic sweep
  • AM, FM, PM, FSK, and PWM internal and external modulation capabilities
  • Gate and burst mode
  • USB interface
  • Independent output and DC offset amplifiers allow for small amplitude output signals with large DC offsets
  • Low-jitter square wave generation for simulating reliable clock signals, generating triggers, or validating serial data buses
  • SCPI-compliant command set
  • Internal/external triggering
  • Built-in counter
  • Short circuit protection for resistive and capacitive loads on outputs and overvoltage protection on inputs


  • Electronic design
  • Sensor simulation
  • Functional test
  • Serial data bus validation

Front View

B&K Precision 4047B Dual Channel Function/Arbitrary Generator

Rear View

B&K Precision 4047B Dual Channel Function/Arbitrary Generator
Published: 2017-04-19 | Updated: 2022-04-11