Pico Technology has announced what it calls the industry's first four-channel, 16-bit oscilloscope. The claim, reported by All About Circuits, positions the UK-based PC-instrument maker in the high-resolution segment where dynamic range, not bandwidth, defines the work.

A 16-bit analogue-to-digital converter resolves 65,536 discrete codes across its input range. That is 256 times more than the 8-bit front end that dominates general-purpose oscilloscopes.

The gain buys roughly 24 dB of additional dynamic range in a single acquisition. Engineers probing sub-millivolt ripple on a high-voltage rail, or characterising a low-amplitude sensor signal stacked on a multi-volt bias, see the relevant waveform as a far larger fraction of full scale.

Why does resolution matter more than bandwidth in some work?

Switch-mode power supply analysis is the textbook case. Switching edges, ringing, and DC bus voltage all live in one acquisition. An 8-bit scope set to capture a 400 V bus shows 1.6 V per code; ripple in tens of millivolts vanishes into quantisation noise. Designers either drop range, losing the bus value, or accept a noisy trace that hides the fault.

16-bit capture keeps both scales visible in one record. The historical trade-off is bandwidth. Sigma-delta and successive-approximation converters run at lower sample rates than the multi-gigasample flash and pipelined architectures behind mainstream 8-bit DSOs. The announcement does not state bandwidth or maximum sample rate.

Where does this sit in the market?

PC-based oscilloscopes from the same vendor have offered high vertical resolution before, in products with two or four channels at 12- and 14-bit resolution. Standalone bench instruments from major test-and-measurement vendors have shipped 12- to 16-bit configurations for several years, typically at 100 MHz to 1 GHz bandwidths and prices above USD 5,000. The new claim adds to a category that has been quietly expanding.

The competitive question is what bandwidth, sample rate, and effective number of bits the product delivers across all four channels simultaneously. PC-based instruments typically use host memory for storage, allowing long captures at lower rates but trading continuous-streaming depth for segmented memory blocks.

What remains to be verified?

• Maximum analogue bandwidth per channel
• Real-time sample rate across four channels simultaneously
• Effective number of bits (ENOB) at full bandwidth
• DC gain accuracy, noise floor in microvolts RMS, and temperature stability
• Calibration interval and traceability to national standards
• Compliance ratings under IEC 61010 for measurement, isolation, and over-voltage categories

Independent bench reviews typically report ENOB at specified input frequencies, noise spectral density, and DC gain drift over the calibration cycle. Vendor press claims should be separated from measured performance.

What is the adoption question?

The development raises the standardisation question the market has been turning over for half a decade: does 16-bit resolution become the default floor for power-integrity and sensor work, the way 100 MHz bandwidth once defined a general-purpose bench? The answer depends on bandwidth.

If usable analogue bandwidth reaches 200 MHz or above, the new unit becomes a credible replacement for mid-range 8-bit DSOs in power, automotive, and instrumentation labs. If bandwidth settles at 20 to 50 MHz, the addressable market narrows to audio, transducer, and precision-DC characterisation.

Until the vendor publishes full specifications, channel counts beyond the headline four, expected availability, and a calibration policy that satisfies ISO/IEC 17025 audit requirements, the announcement stands as a competitive claim rather than a measured entry. Engineers who specify oscilloscopes will read the datasheet before they read the press release.