Tektronix MSO66B 6-BW-4000 Mixed Signal Oscilloscope
The Tektronix MSO66B 6-BW-4000 is a high-performance 6 Series B mixed signal oscilloscope designed for engineers who need to debug and validate complex embedded systems, power electronics, and high-speed digital designs. With 4 GHz bandwidth and six FlexChannel inputs, this oscilloscope offers exceptional flexibility and precision.
Key Features & Highlights
- FlexChannel Architecture: Each of the six inputs can be used as a high-performance analog channel or, with a TLP058 logic probe, as eight digital channels, enabling reconfiguration from 6 analog to up to 48 digital channels as needed.
- High-Resolution ADC: A 12-bit ADC delivers 12-bit resolution at 5 GHz and up to 16-bit resolution at 200 MHz in high-resolution mode, revealing fine signal details.
- Fast Sample Rate: 12.5 GS/s on all channels, with a 50 GS/s low-noise interleaved mode on up to two channels, reducing noise by nearly 3 dB at higher volts/div settings.
- Deep Record Length: Standard 62.5 Mpoints on every analog and digital channel, expandable to 125, 250, or 500 Mpoints on all channels, and up to 1 Gpoint on four channels.
- Low Noise Performance: The TEK061 front-end ASIC ensures low intrinsic noise, making small, fast signals visible at sensitive vertical settings like 10 mV/div and below.
- Spectrum View: Hardware digital downconverters allow simultaneous time-domain and frequency-domain analysis on any analog channel, with independent center frequency and RBW controls.
- Advanced Interface: Large HD capacitive touchscreen, integrated measurements with statistics and trend plots, optional arbitrary function generator, built-in DVM and frequency counter, and TekVPI probe interface for IsoVu optically isolated probes.
Applications
This oscilloscope is ideal for embedded system debug, power electronics design, high-speed digital validation, and any application requiring precise measurement of complex signals. Its versatility and performance make it a valuable tool for R&D labs, production test, and field service.





Michael Torres –
Procurement noted competitive lead time versus other distributors. The Tektronix MSO66B 6-BW-4000 6/48-Channel Mixed Signal Oscilloscope, 4 GHz powers up cleanly, self-test passes, and results align with our reference standards.
David Chen –
The Tektronix MSO66B 6-BW-4000 6/48-Channel Mixed Signal Oscilloscope, 4 GHz is now a core asset in our test cell. Stable measurements, intuitive UI for a complex instrument, and seller communication stayed strong through customs clearance.
Amanda Foster –
We integrated the Tektronix MSO66B 6-BW-4000 6/48-Channel Mixed Signal Oscilloscope, 4 GHz into our RF/metrology lab and performance has matched factory specifications through several weeks of validation. Documentation package was complete for audit purposes.
Thomas Becker –
Premium instrument for premium requirements. The Tektronix MSO66B 6-BW-4000 6/48-Channel Mixed Signal Oscilloscope, 4 GHz delivers the bandwidth/accuracy we needed for next-gen product lines.
Daniel Park –
Trusted supplier for high-value test assets. The Tektronix MSO66B 6-BW-4000 6/48-Channel Mixed Signal Oscilloscope, 4 GHz arrived on the promised window and passed incoming inspection first time.