Testing Further Ics; Continuous Testing - abi Professional ChipMaster Compact Operator's 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.
The ChipMaster Compact is configured into one of the loop modes using
the MODE/CLEAR key as described earlier. Insert the IC and press
TEST/EXEC in the usual way to start the continuous test process. The
result of each test is displayed as PASS or FAIL on the top right of the
display. In LOOP mode, this allows a large batch of identical ICs to be
tested, without any action on the part of the operator other than inserting
the IC. When the IC is inserted, sufficient time must be allowed for the
test to take place before the result status is updated, so if in doubt the IC
should be tested in single mode so that the approximate test time can be
determined. It will be found that high throughput can be obtained using
this mode.
To stop any of the test loops, press MODE/CLEAR, but note that the test
in progress is completed before the command is obeyed. The effect of
this is usually unnoticeable, but where the test takes a reasonable time
to execute there will be a delay before the instrument responds to the
MODE/CLEAR key.
Note: Testing high current ICs in loop mode will drain the batteries
quickly, and it is recommended that a battery eliminator is used if
you wish to perform loop tests.
ChipMaster Compact Digital IC Tester
Copyright © 1992-2009 ABI Electronics Limited
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