Author: ZS6RSH Dick Hayter
Acknowledgement: ZS6BMN Jan Hattingh
Date: 11/19/2013
Revision: Draft B
Revision History: Draft B has various
formatting changes and clarification additions.
1. Document description
This document describes the measurement procedure used by
ZS6RSH.
2. Objective
2.1. Obtain credible measurement results3. Procedure
3.1. heading
Insert a heading that clearly describes the measurements
covered.
3.2. label
Used for search purposes on the blog write-up.
3.3. date
Insert the date when the documentation of the procedure
commenced (US format). If the procedure took > a day then insert the date in
each sub section when that section is processed.
3.4. acknowledgements
Document those who contributed to this procedure including
acknowledgements and references to input sources.
3.5. revision
Draft A, B… Revision 1, 2…
3.6. revision history
Summarize the latest changes made to the document.
3.7. scope
Carefully define the scope of the measurements to be carried
out, including the parameters, quantities and ranges and the method of analysis
and presentation of the data to be recorded.
3.8. history
Describe any related measurements that have been carried out
to date.
3.9. configuration
Develop drawings, schematics, tables and supporting
descriptions of the planned procedure clearly showing all test equipment,
cables, and the device under test (DUT). Draw each of these schematics by hand
or CAD and label each one using the nomenclature Fig 1, 2,….n. Include a
heading, date and author. Refer to these figures in the text of this document.
Include these figures in the blog write up.
3.10.
test equipment specifications
Describe each piece of test equipment including any model
numbers and the relevant test equipment specifications that may relate to the
accuracy of the test equipment during the procedure.
3.11.
device under test specifications
Describe the device under test (DUT) including any model
numbers and the relevant DUT specifications that may relate to the behavior of
the DUT during the procedure.
3.12.
workbench process
Document the step-by-step process that is intended to be
followed during the measurement procedure. Include as much detail as possible
since this will aid greatly in understanding exactly what structured actions
need to be carried out on the workbench and in what sequence. Ensure that all
‘surrounding fixed parameters’ such as Vcc, Ic and Temperature measurements are
recorded.
3.13.
expected results
State the expected results of the measurement in as much
detail as practical. If the expected result is unknown then think again about
the scope and objective of the measurement since it may need to be broken down
into smaller measurement steps.
3.14.
uncertainties
Carefully identify any uncertainties and sources of
inaccuracies and work hard to quantify what these uncertainties are. This can
be done by studying the accuracy related specifications of the test instruments
and DUT.
3.15.
preparation
Clear the work bench.
Carefully set up the measurement configuration and check
that all leads, power, instruments and DUT are correctly set up. Ensure safety
at all times.
Draw up the tables and documents needed to record the
measurements in the lab notebook.
3.16.
carry-out the validation measurements
Make a first measurement and ensure that there are no safety
issues. Check for smoke!
After ensuring that there are no safety or equipment issues,
check the first measurement result to confirm that the result is as expected.
Proceed with a first set of measurements (Vcc, Ic, Temp, max, mid, min…) These
should ideally be tests that have a predictable result that will confirm as far
as possible that the measurement configuration is indeed working correctly.
3.17.
carry-out the full measurement plan
Perform the full set of measurements, recording the results
carefully in clear tabulated form according to the plan already set forth.
3.18.
observations
Carefully record any observations of possible interest as
the measurements proceed.
3.19.
change control
As often happens once the measurements proceed, changes to
the original configuration or tests are desired. These changes must be
documented in detail against the original or amended schematics and measurement
plan. Notes in this section should refer to any changes made from the original
plan and the documents where those changes are recorded.
3.20.
computation
After a break (important).
Sit at the desk with the measurement results in hand.
Carefully complete any mathematical derivations on the
results obtained and tabulate these results as makes sense in the form of
additional columns and rows on the already-defined spreadsheet.
3.21.
analysis
Analyze the results objectively and taking into account any
notes and observations made during the measurement process. Make detailed notes
of this analysis.
3.22.
conclusions
Document objective
conclusions that are based on established facts only!
Avoid deriving conclusions that are not credible!
3.23.
clean up
Important! Dismantle the measurement configuration and stow
all equipment and cables. Switch off all powered equipment and ensure a safe
environment. Clean the work bench.
3.24.
next steps
Define the next steps such as the next stage to be built in
the radio project or further measurements that must be carried out.
3.25 documentation
Edit and/or document this set of Measurements on the blog
ZS6RSH.blogspot.com
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