The Alcotest 7110: What You Need to Know for Trial. Presenters: Samuel Louis Sachs, Esq. Lauren E. Scardella, Esq.

Transcription

1 The Alcotest 7110: What You Need to Know for Trial Presenters: Samuel Louis Sachs, Esq. Lauren E. Scardella, Esq.

2 Basic Operation of the Alcotest Procedural Requirements Periodic Calibration of Alcotest 20 Minute Lockout and Arrest Time 20 Minute Observation Period E.M.I. (RF) Interference Operator Instructions Changing Mouth Pieces

3 Sample Criteria 1.5 Liters 4.5 seconds Breath Testing

4 Methods of Analysis Infrared Detector (IR) Electrochemical Cell (EC)

5 Methods of Analysis (cont.)

6 Computerization of Breath Testing

7 Computerization of Breath Testing Microprocessor A/D Conversion Sensors Pumps Software Object Code Source Code Firmware (EEPROM) Memory (RAM) Digital Data Logging

8 Computer Implementation of a Goal Overly Simplified for Lawyers Our Goal Goal: Determine volume of a cube and print the result on a label Algorithm: a formula or a recipe Length x Width x Height

9 Source Code A Computer language readable by a human being. A list of steps to be taken to implement the Algorithm. Source Code is a computer language such as Basic C Fortran or Cobol.

10 Source Code (cont.) Source Code to implement our Algorithm in our pretend computer language. 1. Measure the length and put it in box A 2. Measure the width and put it in box B 3. Measure the height and put it in box C 4. Multiply the number in A times the number in B times the number in C 5. Record the product of the multiplication in box D 6. Print the number in box D followed by words cubic inches.

11 Source Code (cont.) Source Code lines 1 through 6 would be looked at (read) by a computer program called a Compiler, used by a computer programmer (Nerd and/or Geek variety). A Compiler program translates our Source Code into Object Code to be read by a computer. This Object Code is burned into computer chips called EEPROMs.

12 Object Code A numerical language which is only computer readable and might look like this:

13 Object Code (cont.)

14 Object Code (cont.) When another computer, set up to accomplish the Goal, reads the Object Code put into its EEPROMs, it performs all the steps necessary to accomplish the Goal though implementation of the Algorithm.

15 N.B. 1. The Algorithm must be scientifically proven to properly accomplish the Goal or the results are faulty. 2. Each programmer would likely write different Source Code steps to implement the same Algorithm. 3. Mistakes in the Source Code can cause system crashes and inaccurate results. 4. Hardware problems can cause errors in reading the EEPROMs and cause wrong or no results.

16 Tolerance vs. Accuracy Tolerance is how close the readings are to each other. Accuracy is how close they are to the actual value.

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18 The Alcohol Influence Report 1

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20 The Paper Chase The Golden Twelve 1. New Standard Solution Report of the most recent control test solution change, and the credentials of the operator who performed that change;

21 New Standard Solution Report 6

22 Credentials of Operator Who Performed Solution Change 24

23 The Paper Chase The Golden Twelve 2. Certificate of Analysis for the.10 percent solution used in that New Standard Solution Report.

24 Certificate of Analysis for.10% Solution 22

25 The Paper Chase The Golden Twelve 3. Dräger Certificate of Accuracy for the Alcotest CU-34 Simulator

26 Certificate of Accuracy for CU-34 9

27 The Paper Chase The Golden Twelve 4. Dräger Certificate of Accuracy for the Alcotest 7110 Temperature Probe

28 Certificate of Accuracy for Temperature Probe 10

29 The Paper Chase The Golden Twelve 5. Dräger Certificate of Accuracy for the Alcotest 7110 Instrument

30 Certificate of Accuracy for Alcotest 8

31 The Paper Chase The Golden Twelve 6. Calibration Records, including control tests, linearity tests, and the credentials of the coordinator who performed the calibration.

32 Calibration Record 2

33 Part I Control Tests 3

34 Part II Linearity Tests 4

35 Credentials of Coordinator Who Performed Calibration 25

36 Credentials of Coordinator Who Performed Calibration 25

37 The Paper Chase The Golden Twelve 7. Certificate of Analysis for the.10 percent solution used in the calibration control test

38 Certificate of Analysis for.10% Solution used in Calibration Control Test 17

39 The Paper Chase The Golden Twelve 8. Certificates of Analysis for the.04%,.08% and.16% solutions used in the linearity tests

40 Certificate of Analysis for.04% Solution 18

41 Certificate of Analysis for.08% Solution 19

42 Certificate of Analysis for.16% Solution 20

43 The Paper Chase The Golden Twelve 9. New Standard Solution Report following most recent Calibration.

44 New Standard Solution Report following most recent calibration 5

45 The Paper Chase The Golden Twelve 10.Dräger Safety Certificates of Accuracy for simulators (CU-34s) used in calibration.

46 CU-34 Certificates of Accuracy 13

47 CU-34 Certificates of Accuracy 14

48 CU-34 Certificates of Accuracy 15

49 The Paper Chase The Golden Twelve 11.Dräger Safety Certificate of Accuracy for Black Key Temperature Probe used in calibration of Alcotest.

50 Certificate of Accuracy for Black Key Temperature Probe 16

51 The Paper Chase The Golden Twelve 12.Dräger Safety Ertco-Hart Calibration Report (now Control Company Thermometer Calibration Report).

52 Control Company Thermometer Calibration Report 7

53 What must be offered in Evidence? The following documents must be offered in evidence by the State to demonstrate the Alcotest was in proper working order: 1. The most recent Calibration Report prior to a defendant's test, including control tests, linearity tests, and the credentials of the coordinator who performed the calibration; 2. The most recent New Standard Solution Report prior to a defendant's test; and 3. The Certificate of Analysis of the 0.10 Simulator Solution used in a defendant's control tests.

54 Worksheet A State must submit a tolerance calculation demonstrating that the four readings are within +/- 5% of the mean of the four readings.

55 Worksheet A Defendant: Jane Doe Chris Hewitt Esq.'s Tolerance Calculator Courtesy of Law Offices of Samuel Sachs TOLERANCE CALCULATIONS insert four readings in boxes 7 through 10 in column B EC(1) IR(1) EC(2) IR(2) Mean (also known as the average) 0.13 (adding all four readings, then dividing by 4) Highest reading Lowest reading Absolute Tolerance upper limit (adding.005 to the mean) Absolute Tolerance lower limit (subtracting.005 from the mean) Relative Tolerance upper limit (multiplying mean by 1.05) Relative Tolerance lower limit (multiplying mean by 0.95) UPPER TOLERANCE LIMIT (using Absolute Tolerance when the mean is less than.1000; LOWER TOLERANCE LIMIT using Relative Tolerance when the mean is greater than.1000) Highest reading within tolerance? YES (comparing Upper Tolerance Limit with highest reading) Lowest reading within tolerance? YES (comparing Lower Tolerance Limit with lowest reading) This software may be distributed, without limitation, as long as attribution is given to Mr. Hewitt Law Offices of Samuel Sachs East Windsor, NJ 08520

56 Margin of Error (Accuracy) The Alcotest is subject to a margin of error of at least +/- 5% or, practically speaking, +/- 8.33%.

57 Alcotest Discovery Checklist