Introduction to national instruments logic analyzer and pattern generator solution during the process of debugging and validating a digital system, a common task is the acquisition and generation of digital waveforms. The tristate output is a high impedance state in which the output pin has no value it is not at logic 0 and not at logic high, you can think of this state as infinite impedance. A logic probe is useful tool to measure, in checking digital circuits. Although i did find the logic probe, no luck with the other two. Good logic probes usually have response times much less than 1 usec, while the adc limits this to about 22 usec. Voltage place on a wire to measure the voltage difference between. Counter to 7 segment display with jk flipflops and logic gates. You can determine the output using the logic probe, logic probe as shown in figure5 is a handheld penlike probe used for analyzing and troubleshooting the logical states boolean 0 or 1 of a digital circuit. The p5900 series logic analyzer probes when used with tla6400 series logic analyzers make sophisticated logic analysis available at an affordable price. Why are they trimmer potentiometers as indicated by the special wiper symbol and not regular panelmount potentiometers. What is a logic level in digital circuits, a logic level refers to voltage levels which may be either high logic or a low logic, intermediate or undefinde level between. In this project, we are going to build a logic probe using a 4011 nand gate chip. Voltage and current measures both voltage and current where placed. Tektronix logic probes for mso70000 oscilloscopes tektronix.
Powermeasures the power dissipated or generated by a component. May be multisim doesnt like 7404 outputs being connected together. Voltage place on a wire to measure the voltage difference between either ground, or a selected voltage reference probe. The logic probe will detect a logic 1 and 0 or pulse in a digital circuit.
Ni multisim software offers advanced virtual instruments and analyses to help you gain a deeper and more complex understanding of the operation of your design. Tests all logic families ttl, lsi, cmos, ect, captures pulses to 25ns20mhz, audio beeper with two sounds hi and low, memory function, colored leds for different functions, input overload protection, logic probe is circuit powered and reverse polarity protection. A resistor and diode help protect the probe and the circuit under test. High intensity led readouts provide instant response to the logic state. Using the multisim schematic capture program, enter the circuit that you designed in the prelab. Get the best deals on logic probes when you shop the largest online selection at. Experiment 2 basic logic gates implementation using. Firstly, it will help to know what type of system it will be used on.
You might also use a dc supply and a switch to toggle between inputs. Pausing simulation with the measurement probe in ni multisim. Was wondering if someone can help me find a logic pulser and a logic trainer in multisim 10. Tektronix logic analyzer probes contain a variety of connectivity options that are engineered to ensure that signal acquisition is a true reflection of your designs performance. Refer to figure 1 to help you with parts placement and attributes.
The logic analyzer is an indispensable tool for engineers who design digital circuits. In this lab you will learn how to use the digital logic components in multisim, as well as how to use the. Digital logic probe for troubleshooting ttl and cmos. Logic analyzer gologicxl serial bus decode trigger. How to use the national instruments logic analyzer and. Multisim is a schematic capture and simulation program for analog, digital. In part 2, you will use the logic probe to examine the operation of some digital circuits. Several probes are available in the analysis and annotation bin of the component palette. Integrated circuit design software that quickly automates design of analog and digital circuits for use in schematics, device modelling, design reuse, architecture, signal processing and ic. When a new probe is placed, it automatically appears in the selected variables for analysis list in the analyses and simulation dialog box for several of the analyses available in multisim. Our logic analyzers expose digital signal problems other test and measurement tools. Teaching digital logic fundamentals theory, simulation and. This logic tester can test and display three different logic levels.
Current place on a wire to measure the current flow at that point. The media on which you receive national instruments software are warranted not to fail to execute programming instructions, due. Multisim programmable logic diagram pld, along with support for leading digilent teaching hardware, allows students to put the fundamentals. A logic analyzer is an instrument that captures the response of a digital system for use in debugging and verifying its operation. As we mentioned, typically logic probes read logic 0 and logic 1.
The other end is connected to a point in a logic circuit that needs to be. This video shows how to test the 6 basic logic gates using ni multisim. Unlike oscilloscopes, logic analyzer is designed to analyze the data flow over multiple buses of the microprocessor or microcontroller systems. As a meter, which is used to measure power in electrical circuits. Logic analyzer display of the 3 circuit inputs and circuit output of figure 8, for the 8 patters. Plug your probe into the c2c3 slot for the purpose of this tutorial. Use of switch, led and probe in multisim use of switch, led and probe in multisim use of switch, led and probe in multisim use of switch, led and probe i. In order to analyze multiple channels, logic analyzers are used along with multichannel probes. Simple logic probe logic level measurement for cd4001 cmos nor designed with a simple measuring circuit 6v works with two 3v cr2032 pc motherboard bios is known as battery on top of each other and can be used with serial connection such as you see in the picture below if you use a wide heat shrinkable tubing is not wrong with you or even boxing smd materials are moved to the back with a. No test and measurement solution is complete without probing, and the consideration of its impact on your system and your measurement time. This logic probe can dispay four output states, high, low, pulsing and tristate or high impedance. Digital electronics using multisim prelab exercises.
Em4610a logic probe logic troubleshooting tester levels pulse detector allsun. The software has innovative circuit design technology, which can synchronize theoretical. This may sound simple, but its not necessarily the case. Regardless of the lettering, all probes should work in all slots. This logic probe will light up green if the logic signal is high and red if the logic signal is low. A logic analyzer is an electronic instrument that captures and displays multiple signals from a digital system or digital circuit. We have used a pulse voltage supply in a previous lab. Question 1 what factors determine where potentiometers r pot1 and r pot2 must be set. Logic pulser and trainer ni community national instruments. Digital logic circuit modeling and simulation with multisim multisim is a schematic capture and simulation program for analog, digital and mixed analogdigital circuits, and is one application program of the national instruments circuit design suite, which also. Digital logic probe for troubleshooting ttl and cmos circuits posted on april 19, 2012 by rb 6 comments a logic probe is considered as a stethoscope for engineers and technicians for debugging digital logic circuits that consists of logic gates, memories, registers, etc. An undergraduate design experience in digital logic design.
This probe is like an led, but is easier to use in order to just test the output. In part 1 of this experiment, you will familiarize yourself with the multisim tools for observing digital circuits. Simple logic probe circuit with led indicator level. The best logic analyzer helps you solve digital design problems quickly. With the industrys highestbandwidth differential logic probes, the p6700 series logic probes enhance the performance of the mso70000 series mixed signal oscilloscopes by providing connectivity and signal integrity needed for broad system visibility. It is a versatile tool that can help you with digital hardware debug, design verification and embedded software debug.
Think of how you will simulate an input for your probe. In this particular design, a combination of discrete and ttl logic components is applied to test different logic levels. If youre not yet familiar with multisim, or any other circuit simulation software for. When the analysis is run, variables from probes are automatically plotted in the grapher and saved to a raw file. At the head of a pin, for measuring different parts of the circuits, or ic pin. Compare and learn more about tektronix logic analyzer probe solutions. The media on which you receive national instruments software are warranted not to fail to execute. So it works pretty much like a typical logic probe. Accurate, sensitive probes, fast sample rates, large trace captures, and powerful software are bundled with expert advice and support. One of these tools, the measurement probe, can be a quick and functional interface to the characteristics of your circuit as well as an advanced tool to customize the simulation process in multisim. In part 3, you will use the logic analyzer to observe multiple logic signals simultaneously.
700 362 945 741 1026 1629 1084 1206 1303 649 1048 475 1613 1231 958 240 482 1480 891 407 803 492 398 1318 662 862 752