Connectivity Test for EES Logic Probe Project
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The document provides instructions for testing connectivity using a multi-meter. It describes steps to test that the multi-meter is working properly by creating a short circuit. It then lists steps to test chips for short and open circuits at different pins and tracks. Similar steps are provided to test wires for short and open circuits. Finally, it describes what to visually check for during inspection and examples of issues that could be improved.
Connectivity Test for EES Logic Probe Project
- 1. Connectivity test Week 12
- 2. Get ready the multi-meter 1. Turn the switch to measure ohm (x10) 2. Short the two probes to test that the multi-meter is working properly 3. Check that the needle will swing towards the right
- 3. Chip holder – test short circuit 1. One probe on pin 1 2. Another probe on copper side but at a distance 3. Confirm short circuit 4. Continue to pins 2 - 14
- 4. Chip holder – test open circuit 1 1. Place the two probes on adjacent tracks 2. Confirm open circuit 3. Repeat on the next two tracks
- 5. Chip holder – test open circuit 2 1. Place the two probes across the chip holder 2. Confirm open circuit 3. Repeat on the next two tracks
- 6. Wire – test short circuit 1. Place the two probes on the tracks with the wires 2. Check that the needle will swing towards the right
- 7. Wire – test open circuit 1. Place the two probes on adjacent tracks next to the wire track 2. Confirm open circuit
- 8. Visual check Good: Solder on both sides of ALL pins Good: No solder on the gut
- 9. Visual check Can improve: Partially not cover with solder Can improve: Solder on the gut
- 10. The End