4047B

4047B BK | Alldatasheet

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Technical content

20 MHz Dual Channel Function / Arbitrary Generator

Technical data subject to change © B&K Precision Corp. 2019 www.bkprecision.com Features & Benefits n Dual-channel operation with each channel providing the rated amplitude (10 Vpp) over the entire frequency range n Sine and square waveforms up to 20 MHz n True point-by-point 14-bit, 125 MSa/s, 16-kpt arbitrary waveform generator n Bright color display with waveform preview n Synchronize the phase of both channels with the push of a button n Linear and logarithmic sweep n AM, FM, PM, FSK, and PWM internal and external modulation capabilities n Gate and burst mode n Independent output and DC offset amplifiers allow for small amplitude output signals with large DC offsets n Low-jitter square wave generation for simulating reliable clock signals, generating triggers, or validating serial data buses n USB interface n SCPI-compliant command set n Internal/external triggering n Built-in counter n Short circuit protection for resistive and capacitive loads on outputs and overvoltage protection on inputs The 4047B Dual Channel Function/Arbitrary Waveform Generator is capable of generating stable and precise sine, square, triangle, pulse, and arbitrary waveforms. CH1 and CH2 outputs are fully independent with individual on/off buttons and can both be varied from 0 to 10 Vpp into 50 ohms (up to 20 Vpp into open circuit). The generator provides 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

Applications

This generator is suitable for a wide range of applications including electronic design, sensor simulation, functional test, or serial data bus validation. For more information, visit www.bkprecision.com/WaveXpress Fig 1 - DDS Phase Accumulator Phase to Amplitude Conversion DAC Dual architecture design The 4047B’s dual architecture, a feature typically only found in more expensive generators, provides all the benefits of a DDS and a true point-by-point arbitrary waveform generator (AWG) combined, without any limitations imposed by either technology. The DDS chip produces standard sine and triangle waveforms with high frequency resolution and at a low cost. The true point-by-point AWG implementation (Fig 2) offers improved signal integrity for arbitrary waveforms by producing significantly less jitter and distortion compared to a DDS-based architecture. Custom arbitrary waveform generation is implemented with a variable clock signal to reproduce each point stored in memory without skipping or repeating data points, a problem typically found in DDS based designs with fixed reference clocks. Fig 2 - point-by-point AWG Waveform Memory DAC Low jitter clock (variable) Reference clock (fixed) Freq. control 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). The 4047B seamlessly integrates with B&K Precision’s waveform editing software WaveXpress, allowing users to generate complex arbitrary waveforms that can be output via the instrument’s 14-bit, 125 MSa/s, 16 kpts arbitrary waveform generator.

www.bkprecision.com Front panel Intuitive user interface Easily adjust all waveform parameters using the intuitive menu-driven front panel keypad with dedicated channel selection keys, numeric keypad, and rotary control knob. Rear panel Modulation input BNC Cooling fan Ext. trigger input & counter BNC CH1 & CH2 Sync output BNC USB interface Chasis ground AC Power connector and fuse box Color LCD display Numeric keypad Rotary control knob and cursor keys Channel outputs Channel selection key Menu function keys Power button Waveform keys Units keys Output On/Off key for each channel Lin/Log Sweep key Modulation key

www.bkprecision.com WaveXpress is a comprehensive stand-alone application allowing users to easily generate, edit, and upload custom arbitrary waveforms to the generator via the remote interface. Use the software to generate waveforms by importing a csv file or define via freehand, point draw, and waveform math functions. Features & Benefits n Import waveforms from B&K scopes n Autoscan function automatically detects instruments connected via RS232, USB, or GPIB n Insert commonly used waveforms and different types of noise Versatile features The 4047B provides AM, FM, PM, FSK, and PWM modulation along with linear/logarithmic sweep and built-in counter capabilities. Internal and external sources can be used for triggering and modulating the signal. Powerful waveform editing tool Front panel arbitrary waveform generation From the front panel, waveforms can be defined from scratch by entering data point-by-point or by loading and modifying predefined waveforms. Channel phase synchronization Easily synchronize the phase of both channels with the push of the Sync Phases button to ensure the desired output signal timing. Flexible operation n Numerous transformations for changing a waveform. User-defined transformations can be added in the python programming language n Dialog settings are remembered for faster repetitive work n Undo/redo functions allow quick experimentation

www.bkprecision.comv072519 Specifications 4047B Channels 2 Frequency Characteristics Sine 0.01 Hz - 20 MHz Square 0.01 Hz - 20 MHz Triangle 0.01 Hz - 2 MHz Pulse 0.01 Hz - 20 MHz Resolution up to 8 digits Accuracy 0.001% (10 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 3 digits (1,000 counts) Amplitude Accuracy ± 2% ± 20 mV of programmed output from 1.01 V - 10 V Flatness ± 0.5 dB to 1 MHz ± 1 dB to 20 MHz Offset Range -4.99 V to 4.99 V (into 50 Ω) Offset Resolution 10 mV, 3 digits Offset Accuracy ± 2% ± 10 mV (into 50 Ω) Output Impedance 50 Ω ± 2% Output Protection Protected against short circuit or accidental voltage practically available in electronic laboratories, applied to the main output connector Waveform Characteristics Harmonic Distortion (3 Vp-p into 50 Ω) 0 - 1 MHz, < -60 dBc

1 MHz - 5 MHz, <-50 dBc

5 MHz - 12 MHz, <-45 dBc

12 MHz - 20 MHz, < 50 dBc

Rise/Fall Time (square, pulse) ≤ 20 ns (10% to 90% at full amplitude into 50 Ω) Variable Duty Cycle/Symmetry Square: 20% - 80% to 1 MHz Triangle: 1% - 99% in 1% steps, up to 200 kHz Symmetry Accuracy at 50% ± 1% Pulse Width (period 100 s - 50 ns) 10 ns to <(Period - 10 ns), 10 ns resolution Variable Edge Time 100 ns to Width/0.625 (50 % duty cycle) 10 ns resolution Jitter (square, pulse) < 50 ps rms (cycle-to-cycle, typical) Arbitrary Waveform Characteristics Sampling Rate 8 ns to 100 s Vertical Resolution 14 bits Accuracy 0.001% Resolution 4 digits Waveform Length 2 to 16,382 points Jitter < 50 ps rms (cycle-to-cycle, typical) Operating Modes Continuous Output continuous at programmed parameters Triggered Output quiescent until triggered by an internal or external trigger, at which time one waveform cycle is generated to programmed parame- ters. Frequency of waveform cycle is limited to 1 MHz. Gate Same as triggered mode, except waveform is executed for the dura- tion of the gate signal. The last cycle started is completed. Burst 2-65535 cycles Trigger Source Trigger source may be internal, external, or manual. Internal trigger rate 0.1 Hz - 1 MHz (1 us - 10 s) Sweep Characteristics Sweep Shape Linear or Logarithmic, up or down Sweep Time 10 ms to 100 s Input and Output Trigger IN TTL compatible Maximum rate 1 MHz Minimum width > 50 ns Input impedance 1 kΩ Sync OUT TTL pulse at programmed frequency; 50 Ω source impedance Modulation IN

5 Vp-p for 100% modulation

10 kΩ input impedance DC to > 20 kHz minimum bandwidth Counter Characteristics Range 50 Hz to 50 MHz Resolution Auto ranging, up to 8 digits Accuracy ± 0.02% ± 2 digits Sensitivity 25 mVrms typical General Memory Storage 20 instrument settings Arbitrary Memory 16,382 points in flash memory Power Requirements 100 V - 240 V AC ± 10%, 47-63 Hz Max. Power Consumption < 30 VA Operating Temperature 32 °F to 122 °F (0 °C to 50 °C) Storage Temperature 14 °F to 158 °F (-10 °C to 70 °C) Humidity 95% R.H. 0 °C to 30 °C Dimensions (W x H x D) 8.39” x 3.46” x 8.27” (213 x 88 x 210 mm) Weight 5.5 lbs (2.5 kg) Safety and EMC Standards EN55011 for radiated and conducted emissions EN55082, EN61010, CE approved Three-Year Warranty Included Accessories Power cord, USB (type A to B) interface cable, certificate of calibration Note: All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature range of 23 ºC ± 5 ºC. Specifications are subject to change without notice. Modulation Characteristics Amplitude Modulation (AM) Carrier Sine, Square, or Triangle Source Internal, External Internal Modulation 0.1 Hz - 20 kHz Depth 0% to 100% Frequency Modulation (FM) Carrier Sine, Square, or Triangle Source Internal, External Internal Modulation 0.01 Hz - 20 kHz Deviation 1 µHz to max frequency/2 Frequency Shift Keying (FSK) Carrier Sine, Square, or Triangle Source Internal, External Rate ≤ 100 kHz Phase Modulation (PM) Carrier Sine, Square, or Triangle Source Internal, External Internal Modulation 0.1 Hz - 20 kHz Deviation 0 - 360 °,0.1 ° resolution Pulse Width Modulation (PWM) Source Internal, External Width 1% to 99% Internal Modulation 0.01 Hz - 100 kHz