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Aiden Williams
Aiden Williams

Download !LINK! Saleae Logic Analyzer Users Guide



A logic analyzer is an electronics diagnostic device useful for analyzing or troubleshooting electrical circuits. Like an oscilloscope, it measures voltage over time. While an oscilloscope can capture more fine detail than a logic analyzer, logic analyzers often have more channels and automatic decoding features for common protocols.The Saleae Logic 8 Supports 8 channels, both of which can be used as analog or digital inputs (selected in the software). Each input pin has a corresponding ground pin below it, as shown in the pin diagram below (the grounds are common).




Download Saleae Logic Analyzer Users Guide



But a USB logic analyzer (LA) is only as useful as the software required to configure and monitor the tool. There are a few software options available for this USB logic analyzer; in this tutorial we aim to familiarize you with sigrok's PulseView.


If you're connecting the logic analyzer to a headless machine, or want to automate a LA-based test, check out sigrok-cli -- a command line interface for sigrok. With sigrok-cli installed, for example, you can use a command like:


In the days when a micro Processor had external memory and I/O (like a Motorola 6809) using a clock signal to strobe parallel data into a logic analyzer made sense.With micro controllers, (with internal memory and GPIO) using the clock makes no sense as the MMIO cannot be accessed.


Many people have probably found this post trying to figure out what that pin is since this was posted in 2015.I got the exact same logic analyzer today and connected that pin to my scope and it's a 12MHz 3.3V square wave.


One of my mini logic analyzers (Salae clones) has the CLK pin too. I connected it to the CH0 of another mini logic analyzer (and GND pins on both ones) and found out that it gives 12 MHz square signal as well, but with 8.5 microseconds high signal pause every 200 microsecond period.


The logic analyzer can also be reprogrammed to use for the USBee instead of Saleae Logic. By tweaking the VID/PID in the EEPROM, it allows the logic analyzer to impersonate either Saleae or USBee. Read more on the reference at the end of article if you are interested.


Logic analyzers are great for debugging embedded applications. They operate by sampling a digital input connected to a device under test (DUT) and then displaying the recording on your computer. The Saleae Logic devices connect to your PC over USB. Just download the software at www.saleae.com. Navigate your data easily and intuitively with Logic's fluid and fully animated mouse-driven interface. The Saleae products support decoding for over 20 different protocols.


The delayed-download capture can be very useful in certain situations, such as when the Beagle USB 480 Protocol Analyzer is on the same high-speed bus as the target device. In these configurations, the Beagle analyzer is able to consume minimal USB bandwidth so that it does not obscure problems that occur only when the target is operating at the full USB bandwidth.


Four digital outputs are available to provide for synchronization of the Beagle analyzer with scopes and logic analyzers. These digital outputs are able to match patterns in the captured data as well as idle bus states.


I got stuck (again) while working on my 32-bit 80386DX ISA Single Board Microcomputer project. The issues that I am facing at the moment cannot be solved with an oscilloscope or a frequency counter. It is true that in the past, these two tools helped me debug the early design faults. But now I need way more hardware debugging capabilities. After a two weeks marathon of documentation reading and browsing the Internet, I decided to get myself one of the old boat anchors made by Hewlett-Packard throughout the 1990s decade. The alternative would have been a modern, small, and very expensive USB logic analyzer. I was thinking about the Saleae Logic Pro 16 model. But with only 16 channels and priced close to $ 1,000 ... it was an instant show-stopper. Thus, I bought the Hewlett-Packard 16500C Logic Analysis System for a very small fraction of Saleae's price tag. In fact it was cheaper than one bare PCB for the 386DX project. Say what? It was just too good an offer to refuse.


This is not a tool that you can just power on and start using it. It is very complex and I imagine that back then there were trained people and workshops available for ramping up on digital microelectronics hardware debugging with the help of a logic analyzer. I don't know who was the main target of these machines. But I think mostly big companies developing cutting edge systems. Nowadays nobody wants these and individuals like you and me have a chance of buying one cheap and self-learn how to fix, maintain, operate, and interpret the results.


The 16500C mainframe has five expansion slots, each accepting a variety of compatible acquisition cards. These cards can be logic analyzers, digital sampling oscilloscopes, pattern generators, and possibly other.


I was lucky that my unit came with four individual HP 16555A 110 MHz state / 500 MHz timing logic analyzer cards. And some mismatched interconnection cables. These cards can be configured in a variety of master-extension ways. As it was configured, the mainframe would have been using one analyzer card as master, another one as extension, and the other two were configured as stand-alone master analyzers. This configuration is not very useful to me. So I thought about what I wanted from the machine and figured out the best would be to have the following.


I found the inverse assemblers for these old HP logic analyzers on the EEVblog on the HP Logic Analyzer Inverse Assemblers topic. The compressed file is called invasm_v3.zip and contains inverse assemblers for common processors such as Motorola 68k series, various x86 flavors, and Z80. There are also some other interesting files on that topic, including the source code for the inverse assemblers. I will do some research and investigations on these sources somewhere in the future.


Of great interest are the configuration files for the logic analyzer. I believe that originally these files targeted the HP 16510 logic analyzer card. But as soon as I load one of these configuration files to an appropriate logic analyzer -- in my case it is LA in slot D -- the machine informs me on the correct mapping of the cables to the HP 10269C general purpose probe interface. This is a neat feature which I wasn't expecting at all. I was even prepared to do reverse engineering of the connections before being able to use the inverse assemblers.


It is interesting to note that loading a configuration file will also load the appropriate inverse assembler. At least so it appears. Anyway, another way to load the inverse assembler is to highlight the file and execute a load command into the appropriate logic analyzer.


Later Edit: By hazard, I have just stumbled across an HP document called State and Timing Analyzers for the HP 16500C Logic Analysis System where it is clearly stated that the 16500C mainframe will automatically convert configuration files from different logic analyzers to the 16555A/D logic analyzers. I am quoting directly from page 6 of the document itself.


The E2450A software package is available on the Keysight site under the form of a single compressed file. I downloaded the file and extracted its contents on my PC. Next, I started an FTP client and copied the OPT5_032 file and the MESSAGES and OBJECTS directories to the SYSTEM directory on the 16500 hard disk drive. Then I power cycled the logic analysis mainframe for the changes to take effect.


I think the best way to illustrate the operation of the 16500C unit is by taking a concrete example. What needs to be done is to configure one of the logic analyzers to the specifics of the device under test (DUT). Then it is up to the data acquisition phase. Once we have the data collected we can analyze it. That is what I am planning to describe in the following lines.


Most modern electronics projects will benefit more from a logic analyzer than an oscilloscope. An oscilloscope displays a graph of an analog voltage as it varies over time, such as the curve of a sine wave. A logic analyzer only detects high and low digital states, but it records many signals simultaneously. Logic analyzers dump data to a computer for analysis, very few oscilloscopes have this feature.


You can find the software on the vendor site or even on saleae downloads. The sofware is multi-platform so can be used on any computer, if you are on Windows, use the 64 bits or 32 bits version depending on your Operating System. Mine is Seven 64 bits. I will not describe the installation here.


During the port of Adafruit SSD1306 OLED library for ArduiPi project, I had problem with I2C bus, so I decided to check with this logic analyzer to show I2C transmission, then I found the problem much faster.


By default, the logic analyzer records data for the entire duration of the simulation. The trigger allows you to control the recording of data, by setting the value of one of the digital analyzer's input pins (D7 by default).


By default, the channel names are D0, D1, D2, etc. You can customize the channel names by setting the channelNames attribute. For example, to name the channels "SCL", "SDA", "RST", add the following attribute to the logic analyzer:


PulseView an open source Logic Analyzer GUI. It runs on Linux, Windows, Mac OS X, and there's even an Android version. You can visit their downloads page to get the latest version. For ARM Mac (M1/M2) users, please follow the PulseView on Mac M1/M2 guide.


4 1.Introduction ISDS205 dual-channel digital oscilloscope, with "low-cost, high-performance" as the design goals. well-designed bandwidth of 20M, 48M sampling rate, 2 channels, alternating support X-T and XY alternating pattern of two-channel virtual oscilloscope, spectrum analyzer, data recorder. 205C and 205X support logic analyzer. Logic analyzer support our Logic software and Saleae Logic 2 kinds of software, Saleae Logic supports SPI, IIC, UART, etc. 17 kinds protocol analysis. 205B and 205X support DDS function. DDS support 5 kinds of waveform output, ISDS205A ISDS205B ISDS205C ISDS205X Sine wave can output up to 20M. 2.Feature Description Digital Oscilloscope Channels 2 Impedance Coupling Vertical Resolution Gain Range 1MΩ 25pF AC/DC 8Bit -6V 6V(probe X1) -60V 60V(probe X10) Vertical Accuracy 3% Time Base Range Input Protection Auto Set Trigger Mode 10ns/div-100ms/div Diode,50Vpk Yes(10Hz to 20MHz) Auto Normal and Signal Trigger Type No Rising edge Falling edge Trigger Level Trigger Source Buffer Size Bandwidth Max Sample Oscilloscope Spectrum Analyzer Data Recorder Logic Analyzer DDS Rising edge or Falling edge Yes CH1, CH2 1MB/CH 20MHz 48MS/s 4 041b061a72


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