Connectivity test

     Week 12
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
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
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
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
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
Wire – test open circuit
          1. Place the two probes on
          adjacent tracks next to the wire
          track




          2. Confirm open circuit
Visual check

Good: Solder on both sides of ALL pins




Good: No solder on the gut
Visual check

  Can improve: Partially not cover with
  solder




  Can improve: Solder on the gut
The End

Connectivity Test for EES Logic Probe Project

  • 1.
  • 2.
    Get ready themulti-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 – testshort circuit 1. Place the two probes on the tracks with the wires 2. Check that the needle will swing towards the right
  • 7.
    Wire – testopen circuit 1. Place the two probes on adjacent tracks next to the wire track 2. Confirm open circuit
  • 8.
    Visual check Good: Solderon 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.