Biomedical Engineering Capstone Design Project
Section IV: Lab Equipment
Scopes
Precautions
- The scope's ground inputs are grounded to earth ground through the line cord.
- Extreme care must be taken when placing the scope ground on the circuit under test in order to avoid a short circuit.
- Use a Differential probe to avoid grounding problems.
Multimeter
Precautions
- Remove meter from circuit before changing ranges.
- Never measure a live circuit using Ohms/Diode range.
- The meter looks like a dead short when on the current range, extreme caution must be used, never try to measure voltage when on the current range.
- Do not make measurements that may exceed the meters ratings.
- Protect yourself with a set of fused leads.
Function Generator
Precautions
- Do not connect output directly to a voltage source.
- The output ground is connected to earth ground through the line cord, use caution when placing ground.
Computers
Bench top and some laptops.
Precautions
- The PC is grounded to earth ground through the mains plug. This means that the Serial, Video, USB, and Parallel printer port are all at earth ground potential. Caution must be used when interfacing circuits to the PC.