This USB logic analyser records up to 8 digital channels at a maximum sampling rate of 24Msps and decodes serial buses such as SPI, I2C and UART in PC software. It connects by mini USB, takes signals on a 10-pin header with 8 inputs and 2 ground pins, and is made for 5V, 3.3V, 2.5V and 2.0V logic, which covers most microcontroller and FPGA debugging on the bench.
Features and Benefits
- 8 channels at up to 24Msps - enough sampling headroom for common UART, I2C and SPI bus speeds on embedded boards
- Decodes SPI, I2C, UART, SMBus, I2S, CAN, parallel, 1-Wire and PS/2 - see the actual bytes on the bus, not just the edges
- Input range -0.5V to 5.25V with a 2.0V high threshold - reads 5V and 3.3V logic directly
- 1Mohm and 10pF input impedance - light loading on the circuit under test
- Overvoltage protection, input resistors and a buffer chip - help protect the analyser and the target board
- Small 50 x 28 x 14mm case - leave it on the bench or carry it in a tool bag
Applications
- Debugging UART, I2C and SPI traffic on microcontroller projects
- FPGA and embedded Linux board bring-up
- Checking pulse width, period, duty cycle and frequency of digital signals
- Teaching digital electronics and bus protocols
In the box
Per analyser: 1 x USB logic analyser, 1 x USB cable and 10 x female jumper leads. Pack options are for 1, 2 or 5 analysers.
Note: Inputs are rated -0.5V to 5.25V. Never connect them to mains or to any supply above that range, and connect ground before the signal leads. 1.8V logic can be used but is not recommended by the maker.
Channels: 8 digital inputs. Maximum sampling rate: 24Msps. Logic systems: 5V, 3.3V, 2.5V and 2.0V (1.8V usable, not recommended). Input voltage range: -0.5V to 5.25V. Input low level: -0.5V to 0.8V. Input high level: 2.0V to 5.25V. Input impedance: 1Mohm, 10pF (typical). Clock: 24MHz crystal, ±20ppm. Pulse width accuracy: ±42ns at 24MHz sampling. Protocol decoding: SPI, I2C, UART, SMBus, I2S, CAN, parallel, 1-Wire, PS/2, async serial, custom. Software measurements: Pulse width, period, duty cycle, frequency and cursor time difference. Input protection: Overvoltage protection, input resistors and buffer chip. Input connector: 10-pin header: 8 channels plus 2 ground pins. PC connection: Mini USB. Supported operating systems: Windows XP, Vista, 7 and 8, Mac OS, Linux. Third-party software: Works with two common PC logic analyser software packages (logic function only), selected in software. Dimensions: 50 x 28 x 14mm. Weight: 42g analyser only; 50g with USB cable and 10 jumper leads. Power: From the PC USB port. Indicator: PWR marking beside the input header. Pinout: Printed on the top label (channels and GND). Compatible hosts: PCs running Windows XP to 8, Mac OS or Linux. Pack sizes: 1, 2 or 5 analysers per order. Package contents (per analyser): Logic analyser, USB cable, 10 female jumper leads. Q: What is a logic analyser? A: A logic analyser records several digital lines at the same time and shows each one as high or low against time, then decodes the pattern into bus data. This one captures 8 channels at up to 24Msps and decodes protocols such as SPI, I2C and UART on your PC.. Q: What is the difference between a logic analyser and an oscilloscope? A: An oscilloscope shows the full voltage shape of a signal, while a logic analyser compares each input with a reference level and shows only logic 1 or 0. That makes it suited to watching many digital lines at once and decoding bus traffic.. Q: What logic voltages can this analyser read? A: It is designed for 5V, 3.3V, 2.5V and 2.0V systems, with inputs rated from -0.5V to 5.25V. Levels from 2.0V upwards read as high and up to 0.8V read as low; 1.8V logic works but is not recommended.. Q: Does this logic analyser work on Mac and Linux? A: Yes. The listed operating systems are Windows XP, Vista, 7 and 8, Mac OS and Linux.. Q: How fast a bus can it decode? A: Sampling runs at up to 24Msps, which the maker states covers most standard communication protocol rates such as UART, I2C and SPI. Pulse width measurement error is ±42ns at 24MHz..