Zeroplus Technology Co.

More about Zeroplus Technology Co.

Zeroplus is a company specializing in logic analyzers and digital debugging tools for electronic engineers. They offer a range of products including the LAP series logic analyzers, protocol analyzers, and debugging software. Zeroplus focuses on providing high-performance, user-friendly tools to help engineers efficiently analyze and troubleshoot digital circuits and embedded systems.

ZEROPLUS PC logic analysers: capture, trigger and decode

ZEROPLUS makes PC-based USB logic analysers: the LAP-C Pro with 16 or 32 channels and the LAP-F with 40 or 64 channels. The analyser hardware samples your digital signals and streams them to ZEROPLUS software on a Windows PC, which shows the waveforms, applies triggers and decodes more than 120 bus protocols without extra licence fees. ZEROPLUS is based in Taiwan.

How a ZEROPLUS logic analyser works

A ZEROPLUS logic analyser records the digital state of every connected channel at a fixed sample rate and lets you inspect the result on a PC. Probe leads connect the channels to the target board, the analyser samples and stores the data, and USB 3.0 carries it to the ZP-Logic software, which draws the waveforms and decodes buses such as I2C, SPI, UART and CAN into readable packets.

Probe, sample, stream, decode: the analyser captures and the PC does the analysis.

Sample rate and memory depth set the capture time

Capture time equals memory depth divided by sample rate, so a deeper memory or a lower sample rate records a longer window. The ZeroPlus LAP-C Pro offers 64, 128 or 256 Mb per channel, and channel folding pools memory across fewer channels to reach up to 1 Gb per channel (8 Gb in total on the 32256M). Match the sample rate to your fastest edge, then check that the memory covers the event you need to see.

The same memory lasts about twenty times longer at 100 MHz than at 2 GHz.

ZEROPLUS logic analysers at a glance

Model	Channels	Maximum sample rate	Memory per channel	Notes
LAP-C Pro 16064M	16	1 GHz timing	64 Mb	USB 3.0; channel folding
LAP-C Pro 32064M	32	2 GHz timing, 250 MHz state	64 Mb	USB 3.0; channel folding
LAP-C Pro 32128M	32	2 GHz timing, 250 MHz state	128 Mb	USB 3.0; channel folding
LAP-C Pro 32256M	32	2 GHz timing, 250 MHz state	256 Mb	8 Gb total memory; up to 1 Gb per channel when folded
LAP-F	40 or 64	1 GHz	Up to 64 Mb	Active probes; Long Time Record option; 256-level trigger sequence

Triggering and protocol decoding

Triggers (LAP-C Pro): pattern, edge, pulse width, interval and external triggers, state machine conditions and bus triggers, with pass counts up to 65,535.
Triggers (LAP-F): pattern, edge, pulse width and interval triggers in a 256-level sequence, with pass counts from 1 to 65,535 and trigger delay. Six hardware protocol triggers cover I2C, I2S, SPI, SVID, UART and CAN 2.0B.
Protocol trigger modules: the LAP-PTM Protocol Trigger Module triggers on an I2C packet type such as START, ADDRESS, READ, WRITE, ACK, NACK or STOP, and the Protocol Decoder Trigger Module is a further optional software module. Check the product pages for model compatibility.
Decoders: more than 120 protocol decoders are built into the software at no extra cost, including I2C, SPI, UART, CAN, LIN and USB. ZEROPLUS quotes 130+ protocols for the LAP-C Pro.
Threshold: the LAP-C Pro threshold is adjustable from -6 V to +6 V in 10 mV steps (see the product page for your model).
Pattern generator: the LAP-C Pro also works as a digital pattern generator for I2C, SPI, UART and CAN.

ZP-Logic software

ZP-Logic is the Windows application for the LAP-C Pro and LAP-F, supplied by ZEROPLUS with the hardware and updated regularly.

Display: waveform and state list views, zooming and panning, and a packet list for decoded buses.
Analysis: memory viewer, statistics, noise filtering and comparison of saved capture files.
Export: captures can be exported as CSV or TXT.
Long recordings: the LAP-C Pro streams to the PC over USB 3.0 for continuous capture, and the LAP-F offers a Long Time Record function that streams to disk.
Operating systems: Windows 7, 8.1, 10 and 11.

Accessories and add-ons

The LAP-C-DSO adds two analogue oscilloscope channels (DC to 20 MHz, 8-bit) to a LAP-C analyser for mixed-signal capture. For connecting to the target there are LAP-PROBE-10 and LAP-PROBE-20 test grabbers, a 16-channel 25 cm cable for LogicCube analysers, the LAP-CASE, and breakout adapters for USB, PCI, SD, miniSD and microSD cards, plus a LAP-OPENTHERM adapter. The Protocol Simulator Board A (46 protocols) and Board B (60 protocols) generate known test signals, selected by DIP switch, so you can check a capture set-up without a target.

Typical applications

Debugging I2C, SPI, UART and CAN links between microcontrollers, sensors and memories
Capturing intermittent faults over long periods by streaming to the PC
Bringing up wide parallel and memory buses with 32, 40 or 64 channels
Mixed-signal debugging when a LAP-C-DSO adds analogue channels
Checking decoder and trigger set-ups against a Protocol Simulator Board

Frequently asked questions

Which ZEROPLUS logic analyser should I choose?

Choose the LAP-C Pro for 16 or 32 channels with sample rates up to 2 GHz and 64 to 256 Mb per channel. Choose the LAP-F when you need 40 or 64 channels with active probes at up to 1 GHz.

Do I need to pay for protocol decoders?

No. The decoders are built into ZP-Logic at no extra cost: more than 120 for the LAP-F and 130+ quoted for the LAP-C Pro. The optional trigger modules are separate purchases.

How long can I record?

Capture time is memory depth divided by sample rate. For longer recordings the LAP-C Pro streams data to the PC over USB 3.0, and the LAP-F offers a Long Time Record function that streams to disk.

What is channel folding?

Channel folding combines the memory of unused channels with the channels you are using. On the LAP-C Pro this gives up to 1 Gb per channel, with 8 Gb of memory in total on the 32256M.

Can I add analogue channels?

Yes, the LAP-C-DSO adds two analogue channels (DC to 20 MHz, 8-bit) to a LAP-C analyser. Ask us to confirm compatibility with your model before ordering.

Which operating systems are supported?

ZP-Logic runs on Windows 7, 8.1, 10 and 11. The analysers connect over USB 3.0.

Source: ZEROPLUS Technology Co., Ltd product documentation. Need help choosing a model? Ask our engineers.

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