Electronic Systems Technician

Transcription

1 Performance Verification Packet Electronic Systems Technician This performance verification is designed as one method to evaluate job skills and safe work habits of a participant. The performance of the participant must be evaluated by an NCCER certified evaluator, at an NCCER authorized assessment site and be approved by an NCCER accredited assessment center. Last Updated: March 14, 2005 NCCER Progress Blvd., Alachua, Florida Telephone

2 Last Updated: March 14, 2005 NCCER Progress Blvd., Alachua, Florida Telephone

3 Performance Verification Form How to fill out and file your information Participant 1) Print your last name, first name, and social security number. 2) Print your company name, current employer, and the state where your employer s main office is located. 3) In the space provided for Participant Signature, sign your name and enter the date you signed the form. Performance Evaluator 1) In the space provided for Site Code, enter the postal zip code of the location where the performance verification is being conducted. 2) In the column provided for "Date," enter the date the participant completed each of the tasks. This date is important because there may be times a participant does not complete a performance verification in one day. 3) In the space provided for Performance Evaluator," sign your name. 4) In the space provided for Date," next to your signature, list the date the participant successfully completed all of the tasks. Administrator 1) In the space provided for Administrator, sign your name. Your signature indicates that the performance evaluator is certified to conduct this performance verification and that it was conducted within the guidelines of the NCCER. 2) In the space provided for Date, next to your signature, list the date that this performance verification form is being sent to the NCCER for entry into the National Registry. 3) In the space provided for Accredited Assessment Center, print the name of the accredited assessment center that is conducting this performance verification. NCCER Progress Blvd. Alachua, FL Telephone Fax

4 NCCER PERFORMANCE VERIFICATION CANDIDATE SUMMARY Objective Scope To determine if a candidate is a journey-level electronic systems technician by successfully performing all tasks. The candidate will perform the following tasks to demonstrate competence as an electronic systems technician: Read blueprints Use digital and analog multimeters Prepare and pull cable Mount a variety of devices Terminate coaxial cable with a crimped F-connector Terminate UTP cable at a horizontal cross connect and work area outlet Terminate fiber optic cable Materials Required A selection of tools, equipment, and fasteners for the mounting blocks A set of blueprints (plans) with various scales Analog multimeter Architect s and/or engineer s scales Bread board with multiple resistors and diodes Calculator Coax cable crimper Conduit Control panels Crimpers and die or epoxy Diagonal cutter Digital multimeter Electrical diagram of testing station system interconnection scheme Electrical tape F-connectors Fiber strippers, knife, or hot tweezers Fish tape Grounding strap Labels Lengths of coax cable Lengths of previously installed UTP cable Lengths of SC (fiber optic) cable Multiple lengths of CAT5 cable Needle probe, scissors, or diagonal cutters Outlet box Power supply Pulling line (such as jet line). Punch blocks Ruler Safety glasses Selection of connectors and termination blocks that include RJ45, 66, & 110

5 NCCER PERFORMANCE VERIFICATION CANDIDATE SUMMARY Materials Required (cont d) Selection of fiber optic connectors Tape measure Tie wrap and tie wrap tools Tugger (optional) Two-step cable stripper Time Required Three hours Tasks Reading Plans (Blueprints) Identify selected plans or pages from a blueprint. Identify selected details. Using the electrical drawings, identify selected details. Using an architect s or engineer s scale, scale off the building or room walls shown on a low voltage drawing. Convert room dimensions to actual size. Using the power-riser diagram or similar drawing, identify and count (if applicable) selected devices. Using a Digital Multimeter Properly attach the grounding strap at both ends. Wear safety glasses. Safely set up a digital multimeter to the output of a power supply by attaching the red meter lead to the +V out and the black lead to V out. Using a digital multimeter, measure volts. Using a digital multimeter, measure current. Using a digital multimeter, measure resistance. Troubleshoot any problems. Using an Analog Multimeter Properly attach the grounding strap at both ends. Wear safety glasses. Using an analog multimeter, measure volts. Using an analog multimeter, measure current. Using an analog multimeter, measure resistance. Troubleshoot any problems. Preparing and Pulling Cable Prepare for the cable installation. Prepare the conduit pathways for cables. Insert the fish tape into the conduit. Pull back jet line to attach it to the cable. Prepare the cable bundle. Connect the jet line to the cable(s). Pull the cable(s). Do not exceed the recommended pulling force to the specified type of cable being pulled. Disconnect the pulling line. Create the service slack, then label the cable(s) at the reel or box end. Only then, cut the cable(s). Remove the reels or boxes and pulling equipment.

6 NCCER PERFORMANCE VERIFICATION CANDIDATE SUMMARY Tasks (cont d) Mounting Devices Using the proper tools, safety equipment, and appropriate fasteners, safely surface mount, level, and plumb mounting punch blocks. Using the proper tools, safety equipment, and appropriate fasteners, safely surface mount, level, and plumb control panels. Using the proper tools, safety equipment, and appropriate fasteners, safely surface mount, level, and plumb an outlet box. Terminating Coaxial Cable with a Crimped F-Connector Prepare for the cable termination by organizing the cables by destination and mounting or installing appropriate termination panels or devices. Form, support, and dress the cables to length. Ensure that the cables are properly labeled. Clean the areas of the cable where it is to be cut and stripped. Cut the termination ends of the cable straight across using an appropriate scissor-action tool. Insert the cable into the stripper and strip off the sheath, shield, and dielectric down to the center conductor for a distance of 3/8 from the end. Then strip off an additional 1/8 of sheath and shield down to the dielectric. Inspect the cable for stripping quality. Select the appropriate type of F connector for the coax cable to be terminated. Follow manufacturer s recommendations. Choose a crimp tool and die that are compatible with the terminal and conductor. Place the crimp tool over the connector ferrule and squeeze the tool until the die is completely closed. Repeat for a second crimp if necessary. Inspect the termination for neatness and tightness and that the ferrule still turns. After both ends of the cable are terminated, use a volt-ohmmeter to check for continuity of the center conductor from pin to pin. Then check for shorts between the center conductor pin and the connector body. Terminating UTP Cable at a Horizontal Cross Connect and Work Area Outlet Prepare for the cable termination by organizing the cables by destination and mounting or installing appropriate termination panels or devices. Form, support, and dress the cables to length. The cables should not cross over each other. They should all be parallel and form a neat, orderly bundle. If necessary, temporarily secure the bundles with tie wraps. Ensure that the cables are properly labeled. Label information should include the circuit ID (unique identifier) and the origin and termination of each cable. Terminate to the appropriate connection device. Terminating Fiber Optic Cable Prepare for the cable termination by organizing the cables by destination and mounting or installing appropriate termination panels or devices. Form, support, and dress the cables to length. The cables should notcross over each other. They should all be parallel and form a neat, orderly bundle. If necessary, temporarily secure the bundles with tie wraps. Ensure that the cables are properly labeled. Label information should include the type of cable installed, origin and termination of each cable, conduit used for each cable, and application for each cable. Ensure that the cable and the work area are clean. At this point, follow the manufacturer s instructions to terminate, MM? fiber with an SC connector. This process must include fiber prep, termination, correct positioning, and inspection.

7 NCCER PERFORMANCE EVALUATOR CHECKLIST Date Completed Task To Perform Reading Plans (Blueprints) Setup: A set of blueprints (plans) with various scales, electrical diagram of testing station system interconnection scheme, architect s and/or engineer s scales, tape measure, ruler, and calculator. Identify selected plans or pages from a blueprint. At a minimum, these should include the following: Site plan Floor plan Sections Electrical drawings Legend Identify selected details. At a minimum, these should include the following: Architect s title block Engineer s title block Approval block Revision block Professional stamp Using the electrical drawings, identify the following at a minimum: Cabling concealed in ceiling, wall, or floor; backbone to main cross connect or controls. Various symbols found on the set of plans, such as sensors, output devices, station equipment, work area outlets, and floor boxes Using an architect s or engineer s scale, scale off the building or room walls shown on a low voltage drawing. Convert room dimensions to actual size. Using the power-riser diagram or similar drawing, identify and count (if applicable) the following devices at a minimum: Control panel/equipment Sensors Output devices and work area outlets by type The number, size, and type of conductors Administration/labeling

8 NCCER PERFORMANCE EVALUATOR CHECKLIST Date Completed Task To Perform Using a Digital Multimeter Setup: A digital multimeter, power supply, grounding strap, safety glasses, and a bread board with multiple resistors and diodes. Properly attach the grounding strap at both ends. Wear safety glasses. Safely set up a digital multimeter to the output of a power supply by attaching the red meter lead to the +V out and the black lead to V out. Using a digital multimeter, measure volts. Check the correct voltage range (V--- when measuring DC or V ~ when measuring AC). Connect the test leads correctly. When measuring DC, the black test lead should be connected to V-ohms, and the red test lead should be connected to COM. When measuring AC, the black test lead should be connected to COM, and the red test lead should be connected to V-ohms. Read the voltage reading on the display. Using a digital multimeter, measure current. Select the correct current range. (A --- when measuring DC or and A ~ when measuring AC) Connect the test leads correctly in series with the circuit.. The red lead should be connected to the ma jack for input up to 200 milliamps and to the 10A jack for input up to 10 amps. Read the current reading on the display. Using a digital multimeter, measure resistance. Prepare to measure the resistance by discharging the capacitors in the circuit. This can be done by shorting across the terminals of each capacitor with a jumper wire. Select ohms on the multimeter. Connect the test leads correctly. The black test lead should be connected to COM, and the red test lead should be connected to V-ohms. Read the resistance reading on the display. Troubleshoot any problems. Using a group of diodes, identify the damaged or bad diode. Using a group of resistors, identify their values with the digital multimeter.

9 NCCER PERFORMANCE EVALUATOR CHECKLIST Date Completed Task To Perform Using an Analog Multimeter Setup: Setup: An analog multimeter, power supply, grounding strap, safety glasses, and a breadboard with multiple resistors and diodes. Properly attach the grounding strap at both ends. Wear safety glasses. Safely set up an analog multimeter to the output of a power supply by attaching the red meter lead to the +V out and the black lead to V out. Using an analog multimeter, measure volts. Set the function switch to +DC or AC. Set the range switch to the correct range position. When in doubt, start with the highest and work down. If measuring DC voltage, connect the black test lead to the negative side of the circuit being measured and the red test lead to the positive side of the circuit. If testing AC, connect the test leads across the voltage source (in parallel with the circuit). Read the voltage back on the appropriate DC or AC scale. Using an analog multimeter, measure current. Set the function switch to +DC. Plug the black test lead into the (common) jack and the red test lead into + 50 milliamps or 10 amps. Set the range switch of the appropriate range position. Open the circuit in which the current is being measured. Connect the multimeter in series with the load across the voltage source. Connect the red test lead to the positive side and the black test lead to the negative side of the part of the circuit you are measuring. Do not connect the test leads directly across voltage when the meter is being used to read currents. Read the current on the black DC scale. Convert the number according to the range being measured. (Use 0 to 50 figures to read directly in microamperes. For the 1mA range, use the 0-10 figures and divide by 10. For the 10mA range, use the 0-10 figures and multiply by 10. For the 500mA range, use the 0-50figures and multiply by 10. Using an analog multimeter, measure resistance. ((Mod 33204, pp )) Ensure that no power is flowing to the circuit. Disconnect the component from the circuit before measuring its resistance. Set the range switch to the appropriate range position. Set the function switch to either DC or +DC position. Adjust the zero ohm control for each resistance range. Check that the ohms range will not damage any of the semiconductors. Rotate the function switch between the two DC positions to reverse polarity in order to determine if there is a difference between the resistance in the two directions. Measure resistance of the component. Troubleshoot any problems. Using a group of diodes, identify the damaged or bad diode. Using a group of resistors, identify their values with the digital multimeter.

10 NCCER PERFORMANCE EVALUATOR CHECKLIST Date Completed Task To Perform Preparing and Pulling Cable Setup: Fish tape; multiple lengths of CAT5 cable; conduit; strippers; tugger (optional); electrical tape; tie wrap and tie wrap tools; labels; pulling line (such as jet line). Prepare for the cable installation. This includes setting up the cable reels, measuring the cable run lengths, and obtaining the proper equipment, such as fishtape and a tugger. Prepare the conduit pathways for cables. This includes inspecting, cleaning, and lubricating the conduit. Check that bushings are in place to protect cable at the ends of the conduit. Insert the fish tape into the conduit. Push it into the end of the conduit and push until it appears at the other end. Pull back jet line to attach it to the cable. Prepare the cable bundle. Connect the jet line to the cable(s). The following are common connection methods: Placing a pulling grip or cable basket over the cable and taping it to prevent slippage Connecting a pull line to the cable using a rolling hitch knot with tape Connecting optical fiber cables without pre-installed pulling eyes to the aramid yarn strength member Pull the cable(s). Do not exceed the recommended pulling force to the specified type of cable being pulled. Disconnect the pulling line. Create the service slack, then label the cable(s) at the reel or box end. Only then, cut the cable(s). Label information should include the origin and termination of each cable, conduit used for each cable, and circuit ID number ( unique identifier ). Remove the reels or boxes and pulling equipment.

11 NCCER PERFORMANCE EVALUATOR CHECKLIST Date Completed Task To Perform Mounting Devices Setup: Punch blocks, control panels, and an outlet box. The tools, equipment, and fasteners needed will depend upon which punch blocks, control panels, and outlet boxes are chosen. Using the proper tools, safety equipment, and appropriate fasteners, safely surface mount, level, and plumb mounting punch blocks. Using the proper tools, safety equipment, and appropriate fasteners, safely surface mount, level, and plumb control panels. Using the proper tools, safety equipment, and appropriate fasteners, safely surface mount, level, and plumb an outlet box. Note: Leave these in place for the next tasks Terminating Coaxial Cable with a Crimped F-Connector Setup: Lengths of coax cable, coax cable crimper, tie wraps, two-step cable stripper, diagonal cutter, F-connectors Prepare for the cable termination by organizing the cables by destination and mounting or installing appropriate termination panels or devices. Form, support, and dress the cables to length. The cables should not cross over each other. They should all be parallel and form a neat, orderly bundle. If necessary, temporarily secure the bundles with tie wraps. Ensure that the cables are properly labeled. Label information should include the circuit ID number (unique identifier), origin and termination of each cable, and conduit used for each cable. Clean the areas of the cable where it is to be cut and stripped. Cut the termination ends of the cable straight across using an appropriate scissor-action tool. Properly cut cable will have wire strands that are not twisted, spread, or disturbed from their normal pitch in the cable. The insulation should be cleanly cut, with no frayed pieces or threads extending past the point of cutoff. The cut face must be square with the outer jacket. Insert the cable into the stripper and strip off the sheath, shield, and dielectric down to the center conductor for a distance of 3/8 from the end. Then strip off an additional 1/8 of sheath and shield down to the dielectric. Inspect the cable for stripping quality. Ensure that the center conductor and the insulation are not nicked or scores and that any stray strands of the braided/foil shield are pushed away from the center-conductor dielectric. Select the appropriate type of F connector for the coax cable to be terminated. Follow manufacturer s recommendations. Choose a crimp tool and die that are compatible with the terminal and conductor. Place the crimp tool over the connector ferrule and squeeze the tool until the die is completely closed. Repeat for a second crimp if necessary. Inspect the termination for neatness and tightness and that the ferrule still turns. After both ends of the cable are terminated, use a volt-ohmmeter to check for continuity of the center conductor from pin to pin. Then check for shorts between the center conductor pin and the connector body.

12 NCCER PERFORMANCE EVALUATOR CHECKLIST Date Completed Task To Perform Terminating UTP Cable at a Horizontal Cross Connect and Work Area Outlet Setup: Lengths of previously installed UTP cable, selection of connectors and termination blocks that include RJ45, 66, & 110. Prepare for the cable termination by organizing the cables by destination and mounting or installing appropriate termination panels or devices. Form, support, and dress the cables to length. The cables should not cross over each other. They should all be parallel and form a neat, orderly bundle. If necessary, temporarily secure the bundles with tie wraps. Horizontal cables should have a minimum bend radius of four times the cable diameter or per manufacturer s recommendation. Backbone cables or bundles should have a minimum bend radius of ten times the cable or bundle diameter or per manufacturer s recommendation. Ensure that the cables are properly labeled. Label information should include the circuit ID (unique identifier) and the origin and termination of each cable. Terminate to the appropriate connection device. Use connecting hardware that is compatible with the installed cable. Determine the proper method and length of sheath removal by following the IDC connecting hardware manufacturer s specifications. Determine the length of pair untwisting that is permitted, following standards recommendations (usually ½ ) for CAT5e. Terminate pairs in accordance with appropriate pin-out with conductors swept into the point of termination. There must be no knuckles or extra twists and no more than ½ untwist Terminating Fiber Optic Cable Setup: Lengths of SC (fiber optic) cable; fiber strippers, knife, or hot tweezers; needle probe, scissors or diagonal cutters; crimpers and die or epoxy, selection of fiber optic connectors. Prepare for the cable termination by organizing the cables by destination and mounting or installing appropriate termination panels or devices. Form, support, and dress the cables to length. The cables should notcross over each other. They should all be parallel and form a neat, orderly bundle. If necessary, termporarily secure the bundles with tie wraps. Ensure that the cables are properly labeled. Label information should include the type of cable installed, origin and termination of each cable, conduit used for each cable, and application for each cable. Ensure that the cable and the work area are clean. At this point, follow the manufacturer s instructions to terminate, MM? fiber with an SC connector. This process must include fiber prep, termination, correct positioning, and inspection.