Sigrok Compatible ZeroPlus Logic Cube LAP-C USB Logic Analyzers Support up to 32 Channels, 75 MHz Bandwidth

Back in 2015, I discovered USB123 USBee AX PRO, an ultra cheap logic analyzer (now $5 shipped) with 8 channels, and up to 24 MHz. I purchased one at the time, and successfully tested it with Sigrok & Pulseview open source tools that now work in Linux, Windows, Mac OS, FreeBSD, Android, and several other operating systems.

As I read through my list of RSS feeds today, I noticed Peter Scargill had tested ZeroPlus Logic Cube Lap-C 322000 logic analyzer also connected to your PC via USB, but with better specifications including 32-channels, and 75 MHz. Peter used the company’s Windows software (ZEROPLUS Logic Analyzer LAP-C_Standard_V3.14.03), but a quick search confirmed ZeroPlus Logic Cube Lap-C family is supported by Sigrok.

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LAP-C 322000 is the top model from the family with the following hardware specifications:

  • Sample Rate – Internal clock (timing mode): 100Hz~200MHz; external clock (state mode): 100MHz
  • Bandwidth – 75MHz
  • Working Range – -6V~+6V
  • Accuracy – ±0.1V
  • Memory – 64Mbit, i.e. 2Mbit per channel with up to 512Mbits with compression enabled
  • Trigger – Condition Pattern/Edge; 32 channels; trigger count 1~65535
  • Phase Errors < 1.5ns
  • Maximum Input Voltage ±30V
  • Impedance500KΩ/10pF
  • Power Supply – 5V/500mA via USB port
  • Safety Certification – FCC / CE / WEEE / RoHS / REACH
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The hardware is based on ZEROPLUS ZP-322MB-5 which is believed to be a custom ASIC from the company, Genesys Logic GL660USB (USB2.0 to IEEE-1284 / DMA bridge), Cypress SRAM, and various other chips as explained in the sigrok page.

The company’s software supports Windows 2000 to Windows 10 with plenty of features (Waveform display, filter, filter delay, trigger delay, protocol analysis, etc..), and you can read a detailed review of the device used with the Windows software if you are interested. If you prefer open source software, or run another operating system Sigrok should be a worthwhile alternative.

ZeroPlus Logic Cube LAP-C 322000 is not a low cost part as it goes for $1,599 on Amazon, but other models with the same 75MHz bandwidth, only 16-channels, a lower clock speed (up to 100 MHz), and less memory (512Kbits) such as Zeroplus LAP-C 16032 can be purchased for about $135 on Amazon or eBay. More details should be available on ZeroPlus website.

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