4045B

Data Sheet 20 MHz DDS Sweep Function Generator with Arb Function Model 4045B Features & Benefits ■ 12-bit, 50 MSa/s, 1k point arbitrary waveform generator The model 4045B is a high-performance 20 MHz DDS (direct digital synthesis) function generator with arbitrary waveform capability. Generating stable and precise sine, square, triangle, and arbitrary waveforms, this instrument provides variable output voltages from 0 to 10 Vpp into 50 Ω (up to 20 Vpp into open circuit), linear and logarithmic sweep, AM/FM modulation, a built-in counter, and a continuously variable DC offset that allows the output to be injected directly into circuits at the correct bias level. Separate output amplitude and DC offset amplifiers 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 more expensive generators. The 4045B combines a traditional DDS and a true arbitrary generator in one unit, giving users the benefits of both technologies. Using DDS technology, waveforms can be generated with high frequency resolution at a low price. Due to the inherent limitations of this architecture, not all points from the waveform memory are used, and points may be skipped at higher frequencies. This leads to significantly more jitter and higher Technical data subject to change © B&K Precision Corp. 2018 distortions on non-repetitive waveforms and sometimes small details of the waveforms stored internally will be missing from the output signal. The true arbitrary waveform section generates point by point waveforms with lower jitter, high resolution, and true representation of the required waveform. ■ Sine and square waveforms up to 20 MHz ■ Triangle/ramp waveforms up to 2 MHz ■ Bright color display with waveform preview ■ Linear and logarithmic sweep ■ AM/FM modulation ■ Independent output and DC offset amplifiers allow for small amplitude output signals with Due to the arbitrary waveform capability of the 4045B, the instrument is able to generate low-jitter square waves with greater edge stability. The improved signal integrity allows these generators to be used for simulating reliable clock signals, generating triggers, or validating serial data buses. This model is suitable for education and other applications that require DDS function generators with sweep, modulation, and arbitrary waveform capabilities. large DC offsets ■ Low-jitter square wave generation ■ Adjustable duty cycle ■ Output ON/OFF button ■ Internal/external triggering ■ Gate and burst mode ■ Built-in counter ■ USB interface ■ SCPI-compliant command set ■ Arbitrary waveform editing software and remote control application software provided ■ Short circuit and overvoltage protection on all inputs and outputs www.bkprecision.com 20 MHz DDS Sweep Function Generator with Arb Function Model 4045B Front panel Rear panel Color LCD display Menu function keys Output Dedicated Numeric On/Off Rotary waveform keys keypad button control knob Lin/Log sweep key Modulation key Utility Sync Main key output output Modulation input connector Trigger/counter input connector USB interface Intuitive user interface Easily change all waveform parameters using the intuitive menu-driven front panel keypad, rotary control knob, and large color LCD display that shows a preview of the output waveform. Convenient waveform and range selection buttons let users make quick and precise adjustments to the output signal. Versatile tools Easy PC connectivity Generate waveforms with ease The 4045B provides AM and FM modulation along with linear/logarithmic sweep and built-in counter capabilities. Internal and external sources can be used for triggering and modulating the signal. The signal generator can be programmed remotely via the USB (virtual COM) interface using SCPI commands. B&K Precision also offers application software (available for download at www.bkprecision.com) that provides virtual front panel emulation, allowing users to remotely control their instrument without the need for programming. Use waveform editing software to easily generate, edit, and download custom arbitrary waveforms. Generate waveforms by importing a text file, or define via freehand, point draw, or waveform math. Waveforms can also be loaded from the generator for documentation purposes. 2 www.bkprecision.com 20 MHz DDS Sweep Function Generator with Arb Function Model 4045B Specifications 4045B Modulation Characteristics Frequency Characteristics Sine 0.01 Hz to 20 MHz Amplitude Modulation Square 0.01 Hz to 20 MHz Internal 0.1 Hz – 20 kHz sine, square, or triangle waveform Triangle 0.01 Hz to 2 MHz External 5 Vp-p for 100% modulation, 10 kΩ input impedance Resolution 6 digits* or 10 mHz Accuracy (Sine) 0.002% (20 ppm) at < 500 Hz: 0.001% + 0.006 Hz Output Characteristics Amplitude Range 10 mVpp to 10 Vpp (into 50 Ω); 20 mVpp to 20 Vpp (open circuit) Amplitude Resolution Frequency Modulation Internal 0.1 Hz – 20 kHz sine, square, or triangle waveform External 5 Vp-p for 100% modulation, 10 kΩ input impedance Sweep Characteristics Sweep Shape Linear or Logarithmic, up or down 3 digits (1,000 counts) Sweep Time 10 ms to 100 s Amplitude Accuracy ± 2% ± 20 mV of programmed output from 1.01 V – 10 V Input and Output Flatness ± 0.5 dB to 1 MHz ± 1 dB to 20 MHz DC Offset Range -4.99 V to 4.99 V (into 50 Ω) DC Offset Resolution 10 mV, 3 digits DC Offset Accuracy ± 2% ± 10 mV (into 50 Ω) Output Impedance 50 Ω ± 2% Output Protection Protected against short circuit or accidental voltage applied to the main output connector Waveform Characteristics Harmonic Distortion (for sine wave at 5 Vp-p into 50 Ω) 0 – 1 MHz, < -60 dBc 1 MHz – 5 MHz, 20 kHz. 3 v082218 www.bkprecision.com