ECE 435 Laboratory PoliciesFall 2002Lab Supervisor: Leo Kempel, C-131 ERC, 353-9944, [email protected]: Mike Markey, [email protected]. Grade breakdown. Your lab grade will be determined from the following breakdown:Reports 75%Performance 25%The lab instructor will award your performance grade based on his/her observations of yourbehavior during the lab period. If you are contributing to your group, then that you willreceive a full 25%. If you are just standing around doing nothing, you will receive 0%.2. Make-ups. ALL labs must be completed for you to receive a lab grade. If you do notcomplete an experiment, you will receive a "0". You must be present during lab to getcredit. Make-up labs must be arranged either prior to the absence, or afterward with adoctor's excuse. Attendance will be taken during all labs.3. Preparation. You are expected to be prepared before coming to lab. Read the lab beforecoming to class, complete the preliminary exercises, if any, and review any topics you areunsure of. There will NOT be a lecture during the lab period. The instructor will NOTanswer questions during the lab period over topics you should know from the lab manual. The instructor's presence during the lab period is to oversee the lab and help you with anymechanical trouble you are having with the equipment. If you do not understand materialfrom the manual, see the instructor before the lab period.4. Data. All data must be taken in PEN. It must be signed and dated by the instructor beforeyou leave the lab.5. Lab reports. Lab reports are to be handed in at the beginning of the lab period immediatelyfollowing the period during which the lab was completed. You will be graded on spelling,grammar, organization and writing style, as well as on content. Each group will turn in onereport. Lab reports that do not follow the format given below in terms of style and/orcontent will be returned by the Lab Instructor ungraded. Such reports must be re-writtenand re-submitted. Each lab report may only be re-submitted once! (e.g. You only havetwo attempts at producing an acceptable report, the grade assigned to re-submitted reportswill stand.)All lab reports must be produced on a word processor. The lab reports need not be lengthy, butshould follow the following outline.1. Title page: Title of lab, names of students, name of instructor, sectionnumber, date of lab, date of report (due date).2. Goals: One paragraph outlining the goals of the lab.3. Accomplishments: A summary of your accomplishments -- what you havelearned during the lab. Discuss discoveries, difficulties,verifications of theory, etc. Relate these to the goals of thelab.3. Discussion: A discussion of your results, which follow in the nextsection. You must refer to labeled tables and plots. Includeanswers to questions posed in the lab manual and discusserror, if appropriate. Include all calculations.4. Results: Include your measured and calculated data. Your data mustbe in either a properly labeled table or graph, or both. Whenyou refer to these, it must be by table or graph number. Seethe attached pages for examples of a table and graph. Forsmall amounts of data, use a table. For large amounts ofdata, or when visualization is important, use a graph. Be sureto include units!5. Raw data: Include at the end of your report the raw data you took in lab,including your instructor's signature. Label this data asAPPENDIX 1: RAW DATA.Parts 2 and 3 above are to get you to think about how the lab experience relates to the classmaterial and how the information gained during the lab has helped your understanding ofthe class topics.6. Discussion of error. When you discuss error you may, if you wish, blame the equipment. Ifyou do, you must discuss both the source AND RANGE of the error. For example, if youcan read a dial to within 5%, this range of error cannot completely explain a difference of25% between theory and experiment, unless it is compounded. Remember, the mostcommon cause of error is unfamiliarity with equipment.7. Be nice. Please treat the equipment kindly. Be nice to sensitive things like connectors,switches and dials. To be safe, there will be no food or drink allowed in the lab.EXAMPLE OF PROPERLY LABELED PLOTFigure 1. Attenuation factor for RG-58A/U coaxial cable.EXAMPLE OF PROPERLY LABELED TABLETable 1. Properties of various soft ferromagnetic materials.Material InitialrelativepermeabilityCoerciveforce(A/m)Residualfield(Wb/m2)Saturationfield(Wb/m2)density(g/cm3)Commercialiron150-250 80 0.77 2.15 7.85Pure iron 10k 4 0.2 2.15 7.85Silicon-steel 900-1700 35-60 0.62-0.93 1.5-2.0 7.65Siloctron 1.3k 8-24 1.4 1.5-2.0 7.65Silicon-iron 400 40 1.2 1.5-2.0 7.65Deltamax 400-1700 16-32 1.3-1.8 1.35-1.85 8.254-79 Mo Perm- alloy10k-40k 3-12 0.4-0.55 0.7-0.8 8.74Supermalloy 50k-120k 0.2-4 0.4-0.55 0.65-0.75