Models 4014B and 4040B are 12 MHz and20 MHz DDS (direct digital synthesis) functiongenerators that generate stable and precise sine,square, and triangle waveforms. Both modelsprovide variable output voltages from 0 to10 Vpp into 50 Ω (up to 20 Vpp into opencircuit), linear and logarithmic sweep, AM/FMmodulation, built-in counter, and a continuouslyvariable DC offset that allows the output to beinjected directly into circuits at the correct biaslevel. Separate output amplitude and DC offsetamplifiers let you set a large DC offset (e.g.± 4.99 V ) with a small amplitude output signal(e.g. 10 mV), a feature typically found in moreexpensive generators.The 4014B and 4040B are both designedwith a dual technology architecture, combiningtraditional DDS technology with a low-jittersquare wave generator. The instruments. generate a 2-point waveform to simulate theamplitude and use a high accuracy PLL(phase-locked loop) circuit for timing. Comparedto signals generated by typical low-cost DDSfunction and arbitrary waveform generators, thisimplementation significantly minimizes jitter andimproves edge stability of square waves. Theimproved signal integrity allows these generatorsto be used for simulating reliable clock signals,generating triggers, or validating serial databuses.These models are suitable for education andother applications that require digital functiongenerators with sweep and modulationcapabilities.

Intuitive User Interface
The BK Precision 4040B DDS Sweep Function Generator allows the user to easily change all waveform parameters using the intuitive menu-driven front panel keyboard, rotary control knob, and large color LCD screen which shows a preview of the output waveform. The convenient waveform and range selection buttons allow the user to make quick and precise adjustments to the output signal.

Versatile Tools
The BK Precision 4040B DDS Sweep Function Generator provides AM and FM modulation along with linear and logarithmic sweep and built-in counter capabilities. Internal and external sources can be used for triggering and modulating the signal.

Easy PC Connectivity
The BK Precision 4040B DDS Sweep Function Generator can be programmed remotely via the USB (virtual COM) interface using SCPI commands. Application software for the unit is also available to download which provides virtual front panel emulation. This emulation allows users to remotely control the unit without the need for programming.