LinearMaster Compact Linear IC Tester
The LinearMaster 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.
11.
search mode
This feature allows the type number of an unknown IC to be determined,
provided the IC is actually contained in the LinearMaster Compact
library, and it is a correctly functioning IC. This facility is useful when the
IC type number is illegible or has been removed.
Use the MODE/CLEAR key to choose SEARCH mode, insert the
unknown IC into the socket and press the TEST/EXEC key. You will be
prompted to choose the number of pins of the IC you wish to identify -
use the MODE/CLEAR key to select from 3 to 16 pins or 'QUIT' to
abandon this mode.
Press the TEST/EXEC key again to start the
SEARCH or to quit as required.
During the identification process the display will indicate the number of
ICs identified (IDENT:) and will show graphically how far through the
library the SEARCH has progressed. At the end of the SEARCH, a list
of all the similar ICs will be scrolled onto the display. The list may be
scrolled again by pressing the TEST/EXEC key. The scrolling message
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