The E-Z-Hooks make it dead simple to tap into the signals without accidental shorts.īe mindful of wire orientation. SPI has four important signals enable, data in, data out, and clock. We connected it to the 32K SPI SRAM that we demonstrated earlier this week. Connect the gray ground wire to the ground of the test circuit, then hook into the signal lines you want to record.
NET 3.5, download the redistributable off-line installer if you don’t want to give internet access to Microsoft’s online installer.
Right now, only Windows XP/Vista software is available, but Mac and Linux software should be ready soon. We always download the latest software, so we appreciate that there’s one less CD headed to the landfill. Software isn’t included, instead you get instructions to download the latest version from the Saleae web site. The retractable tweezers prevent accidental shorts on cramped test circuits. The hooks are a really nice touch press the back of the hook to expose a pair of tweezers, grab onto a signal wire, and retract to hold it in place. A mini-B USB cable is included.Ī heavy-gauge cable and nine E-Z-Hooks (5 shown) connect the Logic to a circuit. It’s much smaller than we expected, slightly smaller than a compact flash storage card. The analyzer is a small, anodized aluminum puck with laser etched signal markers. The Logic comes packaged in an external hard drive case. Logic analyzers dump data to a computer for analysis, very few oscilloscopes have this feature. A logic analyzer only detects high and low digital states, but it records many signals simultaneously. An oscilloscope displays a graph of an analog voltage as it varies over time, such as the curve of a sine wave. Most modern electronics projects will benefit more from a logic analyzer than an oscilloscope. It’s now widely available, and Saleae gave us one to try. When it debuted, the Logic was so popular that it was hard to buy one. If you’ve ever considered bringing a product to market, you can learn a lot from Joe’s blog that documents his development process. We’ve been following Joe Garrison’s work on the Logic for a long time. Among hobby-level logic analyzers, the Logic has a good mix of features and decent sampling rates. The Logic is a USB logic analyzer with eight channels and sampling rates up to 24MHz. If you’ve ever had a problem getting two chips to talk, or wanted to reverse engineer a protocol, a logic analyzer is the tool you need to spy on the bus. A logic analyzer records bus communications between two chips.