2 EMC Tests

Question 1

What does the radiated emissions test check?

Answer 1

Testing the noise generated by the device

Question 2

How is a radiated emissions test determined?

Answer 2

Results are plotted as a graph with a pass/fail test line

Question 3

Draw the radiated emissions test

Answer 3

Rotating DUT
Receiver antenna connected to spectrum analyser
Table is insulated

Question 4

What is the pass/fail criteria of the radiated immunity test?

Answer 4

Does the device operate as intended

Question 5

Draw the radiated immunity test diagram

Answer 5

Rotating DUT plugged in
Noise generator antenna sending waves into device

Question 6

What does the conducted immunity test test for?

Answer 6

A medical device’s power cord’s ability to handle external noise

Question 7

What is the pass fail criteria of the conducted immunity test?

Answer 7

Does the device operate as intended

Question 8

Draw the diagram for the conducted immunity test

Answer 8

Cord plugged into wall
Cord going through noise generator
Cord plugged into DUT

Question 9

What does the conducted emissions test test for?

Answer 9

The devices emissions generated

Question 10

What is the pass/fail criteria for the conducted emissions test?

Answer 10

Results plotted along with fail line

Question 11

Draw the diagram for conducted emissions test

Answer 11

DUT on table and plugged into LISN
LISN grounded and plugged into spectrum analyser
Attenuator and Transient limitter between LISN and spectrum analyser