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Job Descriptions & Pay


Class Code: 2018
Salary Schedule: Approved Arizona Law Enforcement Merit System Council Salary Schedule
One Salary
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Annual salaries are calculations based on approved hourly rates.

Summary Statement: Under general supervision, performs forensic examination, enhancement and evaluation of audio and video media for use in criminal investigations and court proceedings. Performs related duties as assigned. This is a competitive classification.

Essential Functions: (not intended to be all inclusive)

1. Disassemble, repair and reassemble audio and video tape media as needed to assist in evidence recovery.

2. Identify media that has been tampered with or altered.

3. Acquire working digital images/copies from a variety of information storage media such as videotapes, audiotapes, compact discs, DVDs, movie film, flash cards, etc.

4. Examine the contents of a storage medium in such a way as to preserve the integrity of the evidence.

5. Analyze images and/or video of evidentiary value for details such as personal identification, clothing, footwear, suspect's handedness, vehicles and other background information.

6. Extract images and/or video of evidentiary value for the investigator and prosecutor.

7. Identify time indicators on videotapes reconciling any discrepancies in the report.

8. Prepare images and video, including copies if required, for investigator, prosecutor and/or defense.

9. Prepare a detailed report to include observations, analysis and results of examination.

10. Testify in local, county, state and federal courts as a witness and/or an expert.

11. Provide technical guidance and assistance to investigators, analysts, prosecutors and others involved in the investigation as to the proper procedures to follow when seizing media.

12. Maintain copies of analysis results in accordance with retention standards.

13. Mark and store audio/video evidence in accordance with established evidence handling requirements.

14. Establish test criteria and data to ensure all program modules and outputs for assigned projects are tested for completeness and accuracy.

15. Initiate and maintain liaison with professional organizations for information exchange and to maintain currency in the latest forensics techniques and equipment.

16. Attend training and seminars to maintain proficiency and to learn of trends and new developments in the field.

Knowledge, Skills, & Abilities Required: Knowledge of:

1. applicable federal, state, county and/or city statutes, rules, regulations, ordinances, codes, administrative orders, case law, Department policies and procedures.

2. the major audio and video file formats.

3. paper density and absorbency relative to the type of printer being used to reproduce images.

4. color and black & white laser, inkjet and dye-sublimation printers.

5. types of ink used by ink jet printers, i.e. water-based vice archival grade.

6. media storage techniques, including digital and analog.

7. multiplex recordings, and how to isolate images in the various views.

8. compression of image files, and how the original image is affected by compression.

9. proper aspect ratio: ITU-R 601.

10. the methods of forensic filtering in audio and video examinations.

11. types of noise and interference that are often encountered in acoustic and visual environments.

12. types of audio and video recorders.

13. types of enhancement equipment available.

14. industry standard software as well as emerging changes.

15. chain of custody and evidence storage procedures.

16. legal terminology and court processes.

Skill in:

1. the use of computer hardware, keyboards, peripheral devices and word processing software.

2. clear articulation of observations both verbally and in writing.

3. modifying and adapting to unusual problems.

4. comprehending technical and non-technical materials.

5. prioritizing tasks to meet deadlines.

6. establishing and maintaining effective working relationships with staff, coworkers, and representatives from other agencies, including those contacted in the course of conducting business.

7. communicating orally and in writing.

8. researching, gathering, organizing, analyzing data and drawing logical conclusions.

9. investigative techniques including but not limited to burglary and theft, child pornography, assault and homicide.

10. identifying problems, analyzing alternatives and making viable recommendations.

11. the use of specialized computer and DVR software programs.

Ability to:

1. follow established chain of custody procedures.

2. obtain image copies from a full range of media.

3. exercise sound judgment in safeguarding/disseminating confidential or sensitive information.

4. protect original quality of evidentiary images on safeguarded media.

5. repair damaged audio and video media.

6. operate forensic equipment with audio and video enhancement capabilities.

7. find identifiers of subjects and vehicles.

8. identify time codes embedded in media.

9. create a chronological analysis of incident data.

10. compose clear and concise analysis reports.

11. train and instruct others in the area of video and audio forensics.

12. testify in federal, state and municipal courts.

13. plan, organize, coordinate, and prioritize multiple tasks and projects to complete job functions in an orderly, efficient manner.

14. make presentations on audio and video forensics for local, state and federal officers.


Office setting.


Must obtain universally acceptable certification and maintain currency.

Must have and maintain a valid Arizona driver license.

Travel may be required.

Minimum Qualifications: Requires three (3) years experience in an audio/video technical field in a commercial or law enforcement environment or a Bachelor's degree in an audio/video field. Any combination of experience and education equivalent to a total of four (4) years may be considered.

Progression to the next pay level/step requires an overall performance rating of at least "Standard" in the last 12 months.

Must successfully complete the examination process.

FLSA Status: Non-Exempt

Current as of: 7/23/2014 2:45:36 PM