1. Tests semiconductor wafer substrate, using testing equipment, such as probe tester, spectophotometer, and curve tracer, to evaluate electrical characteristics of wafer substrate: Places wafer, using tweezers, on test equipment that measures electrical characteristics of wafer substrate, such as resistivity, capacitance, and voltage. 2. Starts equipment and observes equipment readout …
1. Tests household waste disposal units for leaks, using air pressure device: Places unit on test stand and pulls lever to secure unit in place. 2. Attaches airhose and fills unit with air. 3. Observes warning light which indicates leakage. 4. Places defective units on bench for rework. 5. Hangs …
1. Tests electrical characteristics of circuits on semiconductor wafers, using test equipment: Reads processing documents to determine test specifications. 2. Obtains specified probe cards from inventory and slides probe cards into designated slot on testing equipment. 3. Activates testing equipment and places wafer on chuck of test equipment, using tweezers. …
1. Operates sound-testing equipment to detect defects in machinery ball bearing assemblies and diagnoses causes of defects: Turns dials on equipment to specified setting. 2. Slides bearing on adapter arm and starts machine to rotate inner ring of bearing. 3. Listens through headphones to detect sounds that indicate mechanical defect …
1. Test fires rocket motor or rocket engine to determine performance characteristics, using testing, measuring, and recording instruments and equipment, and mathematical formulas: Positions, or directs other workers to position, motor or engine on test stand, using hoist or overhead crane. 2. Attaches measuring and testing instruments, controls, and computerized …
1. Tends automatic equipment that test functions of semiconductor packages: Reads production documents to determine test specifications. 2. Inserts specified test program in test equipment to program equipment. 3. Places tubular magazines containing semiconductor packages in feeder mechanism of equipment. 4. Flips switch to activate test cycle. 5. Monitors operation …
1. Tests endurance and performance of electric motors and electrical-control components, such as motor reversers, cam and unit switches, shunt contactors, and magnet valve adapters under simulated operating conditions, in laboratory or production areas, following specified procedures, using testing equipment: Positions motors or parts, such as switches, contacts, and magnetic …
1. Tests and inspects compressed air or oxygen regulators to detect air leaks: Clamps regulator unit into vise on stage above water tank and attaches compressed airhose to intake ports of regulator. 2. Varies pressure of air flowing into regulator, using manual control, and turns regulator handles to determine that …
1. Tests electrical units, such as lamps, coils, armatures, and commutators to determine shorts, grounds, or efficiency of unit, using test lamp, meter, or growler: Clamps test wires to electrical unit, screws unit into socket, or inserts lead wires into mercury tube to make contact with testing device. 2. Turns …
1. Tests assembled electronic scale components to detect missing parts, loose wires, and defective solder joints, using oscilloscope and voltmeter. 2. Disassembles and repairs or replaces parts.
1. Breaks extruded tubes and rods by one or more of following methods and inspects exposed surface for defects, such as bubbles beneath skin of metal resulting from too rapid extrusion: Nicks workpiece, using file or saw, and breaks workpiece at nick by bending back and forth. 2. Saws off …
1. Tests compressed gases for moisture content, purity, ratio of gases in mixture, and cylinder pressure, using standard testing equipment and following specified procedures: Drains gas samples from tanks, or rolls cylinders to test station. 2. Adjusts test equipment, such as volumetric moisture tester, burette, conductometer, and pressure gauges, according …
1. Subjects petroleum fuels and lubricants to simulated operating conditions in full-scale test engines to obtain evaluating data: Runs tests with gasoline, diesel, aviation, and supercharged research test engines, dynamometers, and other mechanical testing equipment, varying such factors as speed, temperature, load, fuel, and bearing, motor, or chassis lubricants as …
1. Tests rubber bladders, used with sections of inflatable buildings, for air leaks, using compressed airhose and mercury manometer: Attaches valve to bladder, using screwdriver. 2. Inflates bladder to specified pressure with compressed airhose. 3. Checks pressure using manometer. 4. Records air temperature. 5. Rechecks pressure and records air temperature …
1. Inspects and tests lamps after assembly to determine if they are in satisfactory condition: Plugs lamp into electric outlet and turns on switch. 2. Touches metal parts of lamp with exposed ends of live testing wires for indication of short circuit. 3. Inserts metal test rod into lamp socket …
1. Operates machines and equipment used in production of semiconductor wafers, such as alignment equipment, automatic developer, and diffusion furnaces, and tests processed wafers to evaluate performance of machines and equipment: Operates machines and equipment to process test wafer. 2. Inspects and measures test wafer, using electronic measuring equipment and …
1. Obtains sample of molten metal from each furnace heat, using hand ladle or glass tube: Dips hand ladle or inserts glass tube into pouring ladle, before molds are poured. 2. Pours molten metal into sand mold or allows it to solidify in glass tube. 3. Breaks or drills solidified …
1. Positions electrical equipment, such as motors, generators, transformers, telephone apparatus, and electrical controls in test area and connects to test equipment preparatory to final testing: Builds up timbers and steel beams on test floor to form base for testing platform. 2. Directs OVERHEAD CRANE OPERATOR or uses jib crane …
1. Supervises and coordinates activities of TROUBLE LOCATORS, TEST DESK engaged in locating and clearing trouble on telephone line circuits. 2. Performs duties as described under SUPERVISOR Master Title.
1. Collects and assists in evaluation of data obtained in testing petroleum fuels and lubricants under simulated operating conditions: Inspects engines after test runs have been made by TEST-ENGINE OPERATOR, for wear, deposits, and defective parts, using microscope and precision weighing and measuring devices to obtain accurate data. 2. Records …
1. Collects samples of materials, such as scrap iron and ore, and products, such as metal sheets, rails, tubes, and bars, and prepares samples for physical analysis, using grinders, crushers, drill press, power saws and milling machine. 2. Identifies samples and routes samples to laboratory for analysis. 3. Records test …
1. Administers and scores psychological, vocational, or educational tests: Distributes test blanks or apparatus to individuals being tested. 2. Reads directions orally from testing manual, or gives other standardized directions. 3. Demonstrates use of test apparatus or discusses practice exercises to familiarize individuals with testing material. 4. Monitors test group …
1. Plans, lays out, constructs, modifies, tests, and maintains laboratory test equipment and related structural assemblies used to test experimental aircraft and space vehicle parts and assemblies, using precision instruments, handtools, power tools, and shop equipment: Reads and interprets blueprints, engineering drawings, and sketches, or receives verbal instructions, to determine …
1. Plots and draws schematics for test fixture heads used in testing printed circuit boards for electrical shorts and breaks, utilizing knowledge of printed circuit design, electronics, and customer specifications: Reviews blueprint to determine customer requirements and beginning and end points of PCB conductor paths. 2. Confers with engineer to …
