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The scrolling message can be cancelled by pressing the MODE/CLEAR
key, or paused by pressing and holding a numeric key. If you want to
test the IC again, press the TEST/EXEC to abandon the scroll and
perform another test.
Some ICs are available in various packages, and also there are some
ICs in the library which have the same numerical part number even
though the IC functions are different. In these cases the LinearMaster
will automatically determine the IC type prior to the test, provided that
the IC is functional. If the IC is faulty, the following warning will appear
after the test:
This indicates that the IC is faulty, but the pin information cannot be
displayed since the exact part type cannot be identified.
Before discarding a failed IC check that the correct IC type number was
entered and also check that the IC pins are clean and making good
contact with the test socket. Note that there is no way of stopping a test
once it has commenced, but see the description of loop functions later in
this manual.
9. testing further ICs
After a test is completed, the test result will be displayed.
another IC of the same type, simply insert the next IC and press the
TEST/EXEC key again. To test a different IC, enter the new IC type
number in the usual way, noticing that pressing the first digit of the new
number automatically clears the previous number from the display.
Remember that the MODE/CLEAR key can be used if an error is made
during the entry of the IC type number.
10.
continuous testing
It is possible to test the same IC repeatedly to detect intermittent or
temperature-related faults, or to rapidly test a batch of identical ICs.
There are three types of test loop modes:
Loop
- execute a test repeatedly, regardless of the result.
P Loop
- execute a test repeatedly, provided the result is PASS.
F Loop
- execute a test repeatedly, provided the result was FAIL.
LinearMaster Compact Linear IC Tester
WARNING: All Part Types FAIL
Copyright © 1993-2011 ABI Electronics Limited
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