2 Test 2
Tuesday, 15 October 2019
11:09
Devise a test to measure an aspect of the PST's performance.
The test will be "vetted" by a lab tutor before you proceed with testing.
Before you proceed: 
Check the viability of your test with a lab tutor.
Under NO CIRCUMSTANCES is the battery to be short-circuited!
In the space below, provide headings for the test, recorded results, and interpretation of the results.
<Name of Test>
Provide a brief description of the test you are undertaking, and why.
Relate the test to the functional specification of the PST.
Some examples are:
Measure the solar panel characteristic under various lighting conditions.
Measure the "operating point" of the solar panel under various lighting conditions.
Measure the battery voltage over time under various operating conditions (e.g. full LED brightness, half LED brightness, off).
You are not limited to these examples - be novel in your experimental design!
<Recorded Results>
Present your results here.
Note that "log" data is best presented as a graph - you can embed an Excel spreadsheet into OneNote for this purpose.
<Results Interpretation>
Interpret your results here.
Link the results to a functional specification.
Some examples are:
The solar panel OC voltage is xxx V, it's SC current is yyy A, at a 45° angle to the sun.
The solar panel operating point is xxx V, yyy A when fully facing the sun.
The battery life is xxx hours with full LED brightness, yyy hours with half LED brightness, zzz hours off.
Assessment: Have your test assessed by a lab tutor.
This part is worth 1 mark.