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The B&K Precision 4050B Series is a family of dual channel function/arbitrary waveform generators designed to produce stable and precise sine, square, triangle, pulse, and arbitrary waveforms. The series comprises three models — the 4053B, 4054B, and 4055B — that share the same dual-channel architecture and arbitrary waveform engine while differing in maximum sine and square output frequency. Each instrument combines a 4.3-inch color LCD display, a numeric keypad, and a rotary control knob to provide an intuitive user interface for adjusting waveform parameters, modulation settings, and channel coupling.
According to the datasheet, the 4050B Series is suitable for education and other applications that require high signal fidelity, a variety of modulation schemes, or arbitrary waveform generation capabilities. The instruments support linear and logarithmic sweep, internal and external triggering, gate and burst modes, and a continuously variable DC offset. Channel copy, channel tracking with frequency, amplitude, and phase coupling, and a channel combine function that internally sums both channels onto a single output further extend the workflow flexibility for bench, classroom, and signal-simulation tasks.
ValueTronics maintains a 20,000 sq ft secure warehouse at 1675 Cambridge Drive, Elgin, Illinois, where signal generators and other professional T&M instruments are stored, inspected, and tested by our in-house technical staff before shipment. This direct-handling model means every 4050B Series unit we sell — new through our authorized B&K Precision distribution relationship or pre-owned through our verified-condition program — is processed in our own facility rather than drop-shipped from a third party. Customers reach a named account contact who can answer questions about a specific serial number, confirm option configurations, and stand behind the condition documentation associated with the order.
B&K Precision Corporation has provided test and measurement instruments for more than 70 years, with U.S. headquarters in Yorba Linda, California. Its European presence operates through the French subsidiary Sefram, and its Asian operations include B+K Precision Taiwan in Taipei. The company is ISO 9001:2015 registered under certification body NSF-ISR. B&K Precision has not undergone a major brand-name change in the T&M market, so 4050B Series instruments produced today carry the same brand identity as earlier generations of B&K Precision generators in the installed base.
The B&K Precision 4050B Series consists of three dual-channel function/arbitrary waveform generators — the 4053B, 4054B, and 4055B — that share an identical core architecture: 14-bit vertical resolution, 150 MSa/s DDS sampling rate, 16k point arbitrary waveform memory per channel, a 4.3-inch color LCD display, LAN and USBTMC connectivity, and the full modulation suite covering AM, DSB-AM, FM, PM, ASK, FSK, PSK, and PWM. The 196 built-in predefined arbitrary waveforms, the channel copy, track, and combine functions, the built-in frequency counter, and the storage capacity for over 1000 user-defined arbitrary waveforms are common across all three models.
The models in the series differ primarily in the maximum sine and square output frequency, which scales the upper end of the generator's useful range for higher-frequency stimulus applications. Triangle and ramp output (1 µHz to 500 kHz), pulse output (1 µHz to 12.5 MHz), noise bandwidth (greater than 60 MHz at -3 dB), and arbitrary waveform output (1 µHz to 6 MHz) are identical across the three models per the datasheet.
Each model in the 4050B Series — the 4053B, 4054B, and 4055B — is listed as its own product page with pre-owned-matched pricing. Select the page that matches the target frequency range required by the application; specifications, accessories, and modulation features are otherwise common across the series.
The principal differentiator across the 4050B Series is sine and square frequency range: the 4053B reaches 10 MHz, the 4054B reaches 30 MHz, and the 4055B reaches 60 MHz. This single specification determines the highest fundamental sinusoidal or square-wave frequency the instrument can produce, and it scales the usefulness of the generator for stimulus applications that involve clock signals, carrier generation, or component characterization in the upper frequency tiers.
All other electrical specifications listed on the datasheet — amplitude range, amplitude accuracy, amplitude flatness, offset range, harmonic distortion, jitter, rise/fall time, modulation parameters, sweep characteristics, and counter measurement range — are common across the three models. See the comparison table below for the specific frequency range that distinguishes each model in the family.
| Model | Sine & Square Frequency Range | Channels | Sample Rate |
|---|---|---|---|
| 4053B | 1 µHz – 10 MHz | 2 | 150 MSa/s (DDS mode), 30 MSa/s (true arbitrary mode) |
| 4054B | 1 µHz – 30 MHz | 2 | 150 MSa/s (DDS mode), 30 MSa/s (true arbitrary mode) |
| 4055B | 1 µHz – 60 MHz | 2 | 150 MSa/s (DDS mode), 30 MSa/s (true arbitrary mode) |
Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.
| Specification | 4053B | 4054B | 4055B |
|---|---|---|---|
| Frequency Characteristics | |||
| Channels | 2 | ||
| Sine & Square | 1 µHz – 10 MHz | 1 µHz – 30 MHz | 1 µHz – 60 MHz |
| Triangle, Ramp | 1 µHz – 500 kHz | ||
| Pulse | 1 µHz – 12.5 MHz | ||
| Noise (-3 dB) | > 60 MHz | ||
| Arbitrary | 1 µHz – 6 MHz | ||
| Accuracy | ± 25 ppm (1 year) | ||
| Resolution | 1 µHz | ||
| Arbitrary Characteristics | |||
| Built-in Waveforms | 196 built-in waveforms (includes DC) | ||
| Waveform Length | 16k points / Ch | ||
| Vertical Resolution | 14 bits | ||
| Sampling Rate | 150 MSa/s (DDS mode); 30 MSa/s (true arbitrary mode) | ||
| Minimum Rise/Fall Time | 6.5 ns (typical) | ||
| Jitter (pk-pk) | 8 ns (typical) | ||
| Non-volatile Memory Storage | > 1000 16k points waveforms (100 MB in file system) | ||
| Output Characteristics | |||
| Amplitude Range | 2 mVpp – 10 Vpp into 50 Ω (4 mVpp – 20 Vpp into open circuit), ≤ 10 MHz; 2 mVpp – 5 Vpp into 50 Ω (4 mVpp – 10 Vpp into open circuit), > 10 MHz | ||
| Amplitude Resolution | up to 4 digits | ||
| Amplitude Accuracy (10 kHz Sine) | ± (1 % + 1 mVpp) | ||
| Amplitude Flatness | ± 0.3 dB (reference 10 kHz, 2.5 Vpp, 50 Ω load) | ||
| Cross Talk | < -60 dBc (both channels set to 0 dBm, sine 50 Ω load) | ||
| Offset Range (DC) | ± 5 V into 50 Ω (± 10 V into open circuit) | ||
| Offset Resolution | up to 4 digits | ||
| Offset Accuracy | ± ( |offset setting value| x 1% + 3 mV) | ||
| Channel Output Impedance | 50 Ω, high impedance | ||
| Output Protection | Short-circuit protection | ||
| Waveform Characteristics (sine, square, triangle, ramp) | |||
| Harmonic Distortion (Sine) | DC – 10 MHz, < -60 dBc / 10 MHz – 30 MHz < -45 dBc / 30 MHz – 60 MHz, < -40 dBc (0 dBm input signal) | ||
| Total Harmonic Distortion (Sine) | 10 Hz – 20 kHz at 0 dBm, < 0.15% | ||
| Spurious (non-harmonic) | DC – 10 MHz, < -65 dBc / 10 MHz – 30 MHz, < -55 / 30 MHz – 60 MHz, < -40 (0 dBm input signal) | ||
| Rise/Fall Time (square) | < 4.2 ns (10% – 90%, at 1Vpp into 50 Ω) | ||
| Variable Duty Cycle (square) | 0.001% - 99.999% (depending on frequency setting) | ||
| Asymmetry (50% duty cycle) | 1% of period + 20 ns (typical, 1 kHz, 1 Vpp) | ||
| Jitter (rms) cycle to cycle (square) | 300 ps + 0.00 ppm of period (typical, 1 kHz, 1 Vpp) | ||
| Ramp Symmetry | 0% – 100% | ||
| Linearity (triangle, ramp at 1 kHz, 1 Vpp, 100% symmetry) | < 1% of peak output (typical) | ||
| Pulse | |||
| Pulse Width | 32.6 ns minimum, 100 ps resolution, 1,000,000 s max. | ||
| Rise/Fall Time | 16.8 ns (1 Vpp, 50 Ω 10% – 90% load) | ||
| Duty Cycle | 0.001% resolution | ||
| Overshoot | < 3% (100 kHz, 1 Vpp) | ||
| Jitter (rms) cycle to cycle | 300 ps + 0.05 ppm of period (typical, 1 kHz, 1 Vpp) | ||
| Burst | |||
| Waveform | Sine, square, ramp, pulse, arbitrary, noise | ||
| Type | Cycle (1-1000000 cycles), infinite, gated | ||
| Start/Stop Phase | 0° – 360° | ||
| Internal Period | 1 µs – 1000 s | ||
| Gated Source | Internal, external trigger | ||
| Trigger Source | Internal, external, manual | ||
| Phase Offset | |||
| Range | 0° – 360° | ||
| Resolution | 0.1° | ||
| AM, FM & PM Modulation Characteristics | |||
| Carrier | Sine, square, ramp, arbitrary (except DC) | ||
| Source | Internal, external | ||
| Internal Modulation Waveform | Sine, square, ramp, noise, arbitrary (1 mHz - 20 kHz) | ||
| AM Modulation Depth | 0% – 120%, 0.1% resolution | ||
| FM Frequency Deviation | 0 – 0.5*bandwidth, 10 µHz resolution | ||
| PM Phase Deviation | 0 – 360°, 0.1° resolution | ||
| ASK & FSK Modulation Characteristics | |||
| Carrier | Sine, square, ramp, arbitrary (except DC) | ||
| Source | Internal, external | ||
| Modulation Waveform | 50% duty cycle square waveform (1 mHz – 50 kHz) | ||
| PWM Modulation Characteristics | |||
| Source | Internal, external | ||
| Modulation Waveform | Sine, square, ramp, arbitrary (except DC) | ||
| Internal Modulation Frequency | 1 mHz – 20 kHz | ||
| DSB-AM Modulation Characteristics | |||
| Carrier | Sine, square, ramp, arbitrary (except DC) | ||
| Source | Internal, external | ||
| Modulation Waveform | Sine, square, ramp, noise, arbitrary (1 mHz – 20 kHz) | ||
| Sweep Characteristics | |||
| Waveforms | Sine, square, ramp, arbitrary (except DC) | ||
| Sweep Shape | Linear or logarithmic, up or down |
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
Used
Manufacturer
B&K Precision
Frequency
10 MHz
30+ Years in Business
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30+ Years in Business
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Knowledgeable Staff
On-site Lab
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