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The BK Precision 4047B is a 20 MHz dual-channel function and arbitrary waveform generator that produces stable and precise sine, square, triangle, pulse, and arbitrary waveforms. CH1 and CH2 outputs are fully independent with individual on/off buttons, and both channels deliver the rated 10 Vpp amplitude into 50 ohms (up to 20 Vpp into open circuit) across the full frequency range. The instrument combines a DDS engine for standard sine and triangle waveforms with a true point-by-point arbitrary waveform generator, giving the user both high frequency resolution and improved signal integrity for custom waveforms.
The 4047B is suited to a wide range of applications including electronic design, sensor simulation, functional test, and serial data bus validation. Linear and logarithmic sweep capability, AM/FM/PM/FSK/PWM modulation, and a continuously variable DC offset let the user inject signals directly into circuits at the correct bias level. Separate output amplitude and DC offset amplifiers allow a large DC offset (for example, ±4.99 V) to be combined with a small amplitude output signal (such as 10 mV) — a configuration useful when stimulating circuits that require precise bias conditions alongside small AC perturbations.
| 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 2 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 parameters. Frequency of waveform cycle is limited to 1 MHz. |
| Gate | Same as triggered mode, except waveform is executed for the duration 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) |
| Modulation Characteristics | |
| AM - Carrier | Sine, Square, or Triangle |
| AM - Source | Internal, External |
| AM - Internal Modulation | 0.1 Hz - 20 kHz |
| AM - Depth | 0% to 100% |
| FM - Carrier | Sine, Square, or Triangle |
| FM - Source | Internal, External |
| FM - Internal Modulation | 0.1 Hz - 20 kHz |
| FM - Deviation | 1 µHz to max frequency/2 |
| FSK - Carrier | Sine, Square, or Triangle |
| FSK - Source | Internal, External |
| FSK - Rate | ≤ 100 kHz |
| PM - Carrier | Sine, Square, or Triangle |
| PM - Source | Internal, External |
| PM - Internal Modulation | 0.01 Hz - 20 kHz |
| PM - Deviation | 0 - 360 °, 0.1 ° resolution |
| PWM - Source | Internal, External |
| PWM - Width | 1% to 99% |
| PWM - Internal Modulation | 0.01 Hz - 100 kHz |
| 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 |
| Warranty | Three-Year Warranty |
Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Model No
B&K
Condition
New
Manufacturer
B&K Precision
Frequency
20 MHz
30+ Years in Business
Secure Payments
Sell Test Equipments
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30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
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