ENGR 43 Lab Activity Student Guide LAB 8 – Introduction to NI-ELVIS Student Name: ___________________________________________________ S3. Compile data into a test report. Overview A1. Appreciate the capabilities, flexibility, and limitations of a software-based measurement platform This lab introduces the student to the National Instruments Educational Laboratory Virtual Instrumentation Suite (NI-ELVIS). The student will perform basic checks on the NI-ELVIS hardware and software, and learn to use the Soft Front Panel (SFP) controls to perform basic measurements. Getting Started Lab Activity and Deliverables: It should take students approximately 2 hours to complete the lab activity, and 2 hours of homework time to complete the lab report. Before Starting This Activity The reference documents for this activity are on the GoogleDocs site, and hard copies are available in the lab: Where to Start with the NI ELVIS II Series Introduction to NI ELVIS chapter 1 NI ELVIS II Series Specifications Equipment & Supplies Item NI-ELVIS Probes and jumper wires as required ESYS 52 Lab Manual (hard copies of NI-ELVIS documents) 1.0 kΩ resistor, R1, (brown, black, red) 2.2 kΩ resistor, R2, (red, red, red) 1.0 MΩ resistor, R3, (brown, black, green) You should already be familiar with the basic operation of a DMM, oscilloscope, and function generator. Learning Outcomes For Activity [Try to list outcomes that the student can use to grasp the “big picture”] Qty 1 A/R 1 1 1 1 Special Safety Requirements None Relevant knowledge (K), skill (S), or attitude (A) student learning outcomes Lab Preparation Verify that the NI-ELVIS power supply is connected and the USB cable is connected to the lab PC. K1. Identify the virtual instruments available in the NI-ELVIS. K2. Identify basic precautions and limitations of the NI-ELVIS hardware. S1. Verify basic hardware and software functionality of the NI-ELVIS platform. S2. Perform basic measurements with the NI-ELVIS Soft Front Panel instruments. Lab 8 – Introduction to NI-ELVIS ENGR 43 1 © 2012 ENGR 43 Lab Activity Student Guide Task #1 – “Where to Start with the NI ELVIS II Series” Task #2 – “Introduction to NI ELVIS” [Short description of activity for this section] 1. Complete Lesson 1, NI ELVIS II Workspace, on pages 1-1 through 1-12, Exercises 1-1 through 1-5. Do not mark in the Lab Manual! Enter your data on the Performance Report at the end of this Activity Guide. 1. Read “Where to Start with the NI ELVIS II Series.” Verify that the National Instruments software is already installed on the PC on your bench. Verify that the power cables are connected, and that the workstation and proto board power switches are ON. 2. Follow the steps in the Testing the NI ELVIS II Series section on pages 5 through 8. 3. Note any difficulties or problems encountered during these steps in the Performance Report section of this activity guide. 4. Lab 8 – Introduction to NI-ELVIS ENGR 43 Task #3 – “NI ELVIS II Series Specifications” 2. Refer to the specifications for the NI ELVIS II+. Answer the questions on the Performance Report at the end of this Activity Guide Deliverable(s) Save your completed Performance Report in your Lab Activity Binder. 2 © 2012 ENGR 43 Lab Activity Student Guide LAB 8 – Introduction to NI-ELVIS Student Name: ___________________________________________________ Note: Print and turn in the performance report pages. Do not turn in the lab activity procedure pages. Part 1: “Where to Start with the NI ELVIS II Series” Were you able to complete the check-out as described in the procedure? List any problems and how you resolved them. Part 2: “Introduction to NI ELVIS” Exercise 1-1 5. Click on the Ohm button [Ω] to use the digital ohmmeter function, DMM[Ω]. Click on the green arrow [Run] box to start the measurement acquisition. Measure the three resistors R1, R2, and R3. Fill in the following data: R1 _______ (1.0 kΩnominal) R2 ______ (2.2 kΩnominal) R3 _______ (1.0 MΩnominal) Lab 8 – Introduction to NI-ELVIS ENGR 43 3 © 2012 ENGR 43 Lab Activity Student Guide Exercise 1-2 6. Connect the DMM[V] test leads to Vo and measure the input voltage using the DMM[V] function. Press [Run] to acquire the voltage data. V0 (measured) _______________ 7. Using the previous measured values for R1, R2 and Vo, calculate V2. Next, use the DMM[V] to measure the actual voltage V2. V2 (calculated) ________________ V2 (measured) ________________ 8. How well does the measured value match your calculated value? Exercise 1-3 3. Select the function DMM[A] and measure the current. I (calculated) ________________ I (measured) ________________ 4. How well does the measured value match your calculated value? Lab 8 – Introduction to NI-ELVIS ENGR 43 4 © 2012 ENGR 43 Lab Activity Student Guide Exercise 1-4 3. Click on the capacitor button [-||- ] to measure the capacitor C with the DMM[-||- ] function. Press the Run button to acquire the capacitance value. C_______(µf) Exercise 1-5 Copy and paste the RC charge/discharge curve in step 1 to replace the blank display below, or print the curve on a separate page and include with this report. Part 3: “NI ELVIS II Series Specifications” Open the ELVISspec.pdf file. Review the specifications and answer the following questions. Our units are the NI-ELVIS II+, so where differences are listed on the specifications, use the data for the II+. How many single-ended analog inputs are there? ________ What is the resolution of the ADC (analog-to-digital converter)? ________ What is the maximum working voltage for analog inputs? ________ What is the input impedance of the DMM? ________ Which DMM functions are non-isolated? (Electrically isolated from the rest of the ELVIS circuitry) ___________________________ Lab 8 – Introduction to NI-ELVIS ENGR 43 5 © 2012 ENGR 43 Lab Activity Student Guide What is the maximum sine wave frequency output of the Function Generator? ________ What is the input impedance (ohms in parallel with capacitance) of the Oscilloscope input channels of the II+? ________ What is the Oscilloscope maximum sample rate for the II+? ________ What is the maximum current output of the +15 V fixed supply? ________ What is the maximum current output of the +5 V fixed supply? ________ What is the maximum current output of the Positive Variable fixed supply? ________ What other specification(s) do you expect to be significant for using the ELVIS to make measurements like you have done in previous exercises? Lab 8 – Introduction to NI-ELVIS ENGR 43 6 © 2012