A&D TM-2440 Instruction Manual page 27

I.H.B.
The recorder detects an irregular heartbeat that differs ±25 %
from the average pulse rate as I.H.B. ( Irregular Heartbeat ).
The principal factors of appearance for I.H.B. are physiological
factors along with heart, disease and other factors.
Examples include body motion, an increase in body temperature,
aging, physiological properties and emotional changes.
I.H.B. may be detected when a very slight vibration like
trembling or shaking occurs.
Carry out analysis using a dedicated peripheral to know
whether I.H.B. has been detected or not.
Refer to the instruction manual of analysis software for details.
Pulse rate is faster 25 % than average value or more.
Pulse rate is slower 25 % than average
value or more.
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