How The Blood Pressure Monitor Works; Operation Frequency; Specifications - Oregon Scientific BPU321OS Manual De Usuario

or temperature basis. Thesevariations may be more
pronounced in hypertensive patients. Normally the
blood pressure rises while at work and is at its lowest
during sleep. The graph be low illustrates the variations
over a single day with measurement taken every 5
minutes. The thick line represents sleep time. The
rises in blood pressure at 4PM (A in the graph) and 1
2AM (B in the graph) correspond to an attack of pain
and sexual intercourse (Beven, Honour & Stott, Clin. Sci.
36:329, 1969).
A
160
140
120
100
80
60
40
20
12 13 14 15 16 17 18 19 20 21 22 23 24
PM
HOW THE BLOOD PRESSURE
MONITOR WORkS
This product uses the Oscillometric Measuring method to
detect your blood pressure. Before every measurement,
the unit establishes a "zero pressure" equivalent to the
air pressure.
Then it starts inflating the arm cuff to 180mmHg or higher
until it senses that it has blocked your blood in the artery.
After that, the deflation process starts, during which time the
unit detects pressure oscillations generated by beat-to- beat
B
Sleep
1 2 3 4 5 6 7 8 9 10 11
Time AM
pulsatile, which is used to determine the systolic, mean and
diastolic pressure, and also your pulse rate. Any motion
during this period will result in an incorrect measurement.
After all readings are determined and displayed on the
LCD, the measurement is finished and the arm cuff
automatically deflates.

OPERaTION FREQUENCY

The device's operation frequency is between 2.40GHz to
2.4835GHz, this is a unlicensed frequency band under
CFR47, Part 15 of FCC rules, there is 40 RF channels,
consists of 37 data channels for communication
between connected devices and 3 advertising channels
for discovering devices, the communication use GFSK
modulation mode with Frequency-hopping spread
Spectrum technology, the Maximum peak output power
is 99.25dBuV/m by FCC test report(Report reference No.:
TRE1204008401- Section 4.2: Radiated Emission), the
effective connection distance is up to ten meters indoor.

SPECIFICaTIONS

application
Measuring method
Application
Measurement location Upper arm
Maximum number
of users
Memory
15
Oscillometric / non-invasive
For adult use only
2 and guest
Maximum 100 per user