Download RAM 1400 BU Series Specifications

e. Begins initial reading within 10 seconds if all checks pass.
2.2.3.. Reading Cycle. The following is a brief description of the reading cycle.
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a. Re-zeros the transducer and checks EPROM data.
b. Closes the valves and begins inflation of cuff.
c. Inflates cuff pressure to the calculated level.
Initial default ==
170 mmHg for Adult Mode
110 mmHg for Neonate Mode
d. Inspects cuff pressure for the presence of oscillations.
e. Steps the cuff pressure downward.
f. Continues searching for and storage of oscillation data.
g. Begins to count number of artifact events. The step sizes range from 14 to 3 torr (mmHg),
. depending on internal software calculations.
h. Stops the oscillation search.
1.
Vents the pressure five oscillation-amplitude steps after the maximum.
J.
The microprocessor searches through the oscillatory data in the memory buffer (RAM)
for the point of maximum oscillations. Tangent lines are constructed from the point of
maximum oscillations to the minimums on either side of this point. The cuff pressure at
the point of maximum oscillations is the value for mean arterial pressure. If the data are
"clean" (i.e., artifact count is low, and/or signal amplitude is large), the value for MAP
is displayed on the front panel.
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