Voltech AT5600, Руководство пользователя

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C H A P T E R 4 – A T 5 6 0 0 F U N C T I O N A L D E S C R I P T I O N
AT5600 User Manual 98-119 issue 14
Page 59
4.2. How Does the AT5600 Tester Run a Test?
Programming of each test is done at a high level; it is not strictly necessary for
you to know the details of how tests are executed within the tester. However, for
some users this subject may be of interest, therefore a brief explanation has been
included here.
When the test program is loaded into the tester, each individual test is assembled
into a sequence of operations involving the components in the functional block
diagram shown in 4.1-1. The sequence is different for each test, and in some
cases, it depends on which is the preceding and following tests in the program;
but in all cases, it is optimized to give the best measurement speed and accuracy.
As an example, the sequence for measuring inductance may be summarized as
follows:
For other tests, the sequence may be more complicated.
Notes: All the relay switching is completed before the test source is energized;
this will ensure that there can be no arcing and prolong the life of the relays.
In contrast to some LCR bridges, the AT Series testers trim the test source to give
the user programmed test conditions. This will guarantee that the same test
conditions are applied to all transformers that use the same test program.
At the end of the test, the source is safely ramped down, so that the relay
switching for any subsequent test will always occur with the source removed.