Advanced Instruments 3900, User Manual

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STOP may be pressed to stop the action at any time during the
test. This is particularly useful for checking alignment at the
INSERT test well and the sample freezing chamber.
Press STOP a second time to exit to the test menu.
12. Tube Transport Test
This test is designed to test all phases of the tube handling cycle,
except sample freezing. If loaded cassettes are in the left (input) cas-
sette deck, they will be pushed into index position (if no cassette can
be pushed into index position, the test will pause and the display will
report “ No Cassette ” until STOP is pressed). The operating head
will wipe the probe and stir/freeze wire, pick up a sample tube from
the next loaded position in the cassette, rotate it to a position over
the sample freezing chamber, then return it to the cassette (it will not
be lowered into the freezing chamber). Each cassette position will be
indexed and displayed. Each sample tube will be picked up, rotated
and returned to the cassette. Any empty cassette position will be so
indicated on the printer tape. This cycle will continue until STOP is
pressed, all cassette positions have been tested, or a sample handling
error occurs.
If an error occurs, the test will pause and an appropriate message
will be displayed and/or printed.
On entry, “
[START] Ready? ” is displayed. Press START to begin
the test. When all cassette positions have been tested, the instrument
will return to the test menu.
To interrupt the test and exit to the test menu, press STOP. When
STOP is pressed, the operating head will return the tube in use to its
proper position in the cassette, wipe the probe, and stop in the left
(standby) position.
When the test is interrupted by pressing STOP, it cannot be resumed
at the cassette position where it stopped. If you wish to finish testing
the interrupted cassette, remove any tested samples, push the
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The Advanced
®
Osmometer Model 3900 User’s Guide