Saleae Logic - 8-Channel USB Logic Analyzer
A logic analyzer is a device that lets you watch digital signals in your electronics project. Unlike an oscilloscope, its not good for measuring analog signals - but also unlike an oscilloscope, you can track 8 signals at time! So its a good complementary tool. This logic analyzer plugs into a computer and has easy to use, cross-platform software. This makes it small, portable and inexpensive. If you ever have to to debug SPI, i2c, serial, CAN, 1-wire, Manchester, biphase or other digital protocols, this tool is essential!
- Speedy 24MHz Logic samples each channel at up to 24M times per second. A large fraction of practical, real world applications run at less than 10MHz, and Logic is ideal for these.
- 8 Channels Logic has 8 inputs -- it can monitor 8 different digital signals at once. For many modern microcontroller-based designs, this is plenty.
- 10 billion samples Logic can save as many as 10B samples, letting you capture even the most elusive events. No more dealing with frustratingly small sample buffers.
- Comes complete Start debugging within 5 minutes of opening your new Logic; everything is included: An ultra-flexible 22AWG 64/40 wire harness, 9 high-quality micro-hook probes, a USB cable (2 meter mini-B to A), and a nice carrying case. Download the software from our site (see software)
- Enclosure We love well made tools. That's why we make Logic's case out of custom CNC machined aluminum and make sure its anodized surface is finished to perfection.
- Protection Logic's inputs are protected against overvoltage conditions via current-limiting resistors and ultra-low-capacitance diode clamps. A resettable fuse protects the USB ground return line to augment the USB host's existing protection.
Geometry and Weight
- Length & Width: 1.7 in (43.2mm)
- Thickness: .365 in (9.3mm)
- Volume: 1 in3 (16.4 cm3)
- Weight: .9 oz (25.5 gm)
- Input voltage range: -0.5V to 5.25V
- Input Low Voltage: -0.5V to 0.8V
- Input High Voltage: 2.0V to 5.25V
- Works with 5V, 3.3V, 2.5V, 2.0V systems. May work with 1.8V but not recommended.
- ESD protected per CE requirements
- Over-voltage protection to +/- 15V. Not meant for continuous operation outside -0.5V to 5.25V.
- Input Impedance: 1Mohm || 10pF (typical, approximate)
- Error/Accuracy: pulse-width measurement: +/- 42ns (at 24MHz).
Sample Rate & Depth
- 24MHz. 16MHz, 12MHz, 8MHz, 4MHz, 2MHz, 1MHz, 500KHz, 250KHz, 200KHz, 100KHz, 50KHz, 25KHz; Note that achieving the highest sample rates requires low USB latency; this may not be achievable on all computers. Performance may improve with the removal of other USB devices, using a different USB host controller, or increasing the software's process priority.
- 10B samples. Absolute max depends on data compressibility, available RAM and operating system. 10B samples assumes reasonably high compressibility.
- Windows XP (32-bit)
- Windows Vista (32-bit or 64-bit)
- Windows 7 (32-bit or 64-bit)
- Mac OS X 10.4 Tiger or higher
- Linux: recent Ubuntu, Fedora, or openSUSE. Other distributions are likely to work but not specifically supported.
- USB 2.0
What's in the Box
- Logic (fully tested)
- 1x9 Ultra-Flexible Test Lead Set
- x9 Micro Hook Clips
- USB Cable (2M length, A to mini-B)
- Custom Carrying Case
- Software not included — download here
- Custom CNC machined aluminum enclosure
- 2-part elastomer injection molded bottom cover
- 4-layer PCB, professionally designed, laid out, and design reviewed
- 1x9 male IDE .1 in pitch (aperture size: .110 in x .940 in; .030in radiused corners)
- USB Mini-B
- 50 mA Idle (from USB, typical)
- 75 mA Sampling (from USB, typical)
- RoHS Compliant
- CE Certified
- Extra 1x9 wire bundles
- Extra x9 pack of test clips
- 1x9 to 1x9 IDE cable
- 1x9 IDE to individual wires cable
Safety & Equipment Protection
- Logic may not be used with DUTs (devices under test) which are not electrically isolated from MAINS (i.e. wall power).
- DUTs which are battery powered, or USB powered (from the same computer as Logic) are acceptable.
- DUTs powered by AC adapters which have only 2 prongs, and do not have an earth ground connection (such as most "wall warts"), usually provide MAINS isolated power and are acceptable.
- For other DUTs, isolation can typically be achieved through the use of a dedicated isolation transformer (such as those made by Tripp-lite).
- When using USB powered DUTs, special care should be taken to avoid connecting USB sourced power to Logic's ground, as this provides a short-circuit return path. While both Logic and USB ports are designed to survive a short circuit event, care should be taken to minimize its likelihood.
- As an alternative to isolating the DUT from MAINS, you can isolate the PC instead, such as by using a Laptop running off of battery power. You must make sure the Laptop is not connected to other grounded equipment, such as a computer monitor.