WebUSB · Cypress EZ-USB FX2LP
Eight channels.
Twenty‑four megahertz.
Nothing to install.
Plug in an FX2LP analyzer, capture up to eight digital lines, and read the traffic back as decoded protocol — in a browser tab. Captures are decoded on your machine and never leave it.
Reads captures from PulseView and sigrok-cli. You can also drop a .sr file anywhere on this page.
This device needs the fx2lafw firmware before it can capture. It is loaded into RAM, not written to the device.
Use a different firmware file
8Channels
24MHzTop rate
27Decoders
.srSigrok files
Pulsar is a browser-based logic analyzer for the Cypress EZ-USB FX2LP. Connect over USB, capture up to eight digital channels at 100 kHz to 24 MHz, and read the traffic back as decoded protocol — with no drivers and nothing to install.
- WebUSB — runs in Chrome, Edge and other Chromium browsers
- Pan, zoom, pinch, fit and measurement cursors with delta time and frequency
- Crop, delete and export any selection
- Reads and writes Sigrok
.sr, including compressed PulseView files - Finished captures are kept in this browser so you can reopen them later
- Captures are decoded in your browser and are never uploaded