20
15. Setting sensitivity to notice tonic-clonic seizure
The sensitivity to notice fast movements caused by tonic-clonic
seizure can be adjusted with the 10-position rotary switch inside
(see picture 5). The factory default setting is 3.
Use following table to make a pre-adjustment per person weight
BUT adjust it if needed either up or down. If you feel that
sensitivity is not good enough, simply adjust higher step by step.
Or, if you feel it is too sensitive causing false notifications, simply
drop the setting lower step by step.
Test it so that when person is in bed, gentle tapping of mattress nearby sensor should start
the green led blinking faster which indicates fast movements are detected. If not, adjust
higher. However, when person is lying still it should not start blinking fast without reason. If
so, adjust lower.
During rest the green led should blink the same speed as blue led. If person is rolling over
in bed, lights may momentarily blink faster. This type of normal movement in bed should
not last long enough for the notification to sound.
Adjust the sensitivity of the device every time the sensor is re-installed, if the
user or the sensor changes.
16. Calibrating the “presence / absence” sensitivity
16.1 Doing calibration
If you use the bed-exit (absence) notification, the sensitivity to determine that person is in
or out of the bed is adjusted in calibration mode. The person to be monitored should be in
bed and lying still (not moving or talking) for at least one (1) minute until green light starts
to blink the same speed as blue light. The monitor (control unit) should be placed on a
table, clipped on bed, or mounted on wall. Do not hold monitor in hand while testing.
Sensor should be in correct position under mattress.
Start calibration by pressing the SW1 switch (picture 21) three (3) times. You will hear 3
low and high tones (bu-beep, bu-beep, bu-beep). The calibration takes 18 seconds. If
calibration is successful, the confirmation sound will be the same 3 low and high tones (bu-
beep, bu-beep, bubeep).
