For M1, as an extension of P2, learners must compare analogue and digital signals. The comparison should contain clear understanding of both types of signal, and relate analogue and digital clearly.

M3 requires an explanation of the principles and uses of proportional control.

For M2, learners must explain the need for signal conversion. Learners will be expected to demonstrate clear comprehension of signal conversion theory.

For P6 and P7, learners must design and implement a control system. This should be a full working model that demonstrates what the learner has and has not understood from the unit. Logbooks, photos and plans can all be useful evidence, supplemented by test records and witness statements or observation records. The design should include all the elements outlined in the unit content. Testing should include performance testing,ie does it meet its objective efficiently and effectively

P4 is a description of how data can be represented in control systems. Plenty of examples should be included.

For P3, learners should illustrate the operation of different sensors and output devices. This could be carried out as a practical exercise observed by the tutor. In this case, appropriate observation records and supporting documentation will be used as evidence.

For P2, learners should show that they can explain the characteristics of digital and analogue control systems.

For P5, learners need to explain the stages of control loop operations. If the tutor wants to examine this criterion verbally that would be acceptable, however learners might also produce a poster that they could talk the tutor through in a clear and logical way. A question and answer session based around a practical system would also be appropriate.

For P1, learners must explain all the different types of control systems, as listed in the unit content.