TOPCOM Sweetheart
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You will hear the baby's sound very clearly when the probe is correctly positioned.
•
Turn the volume control (1) on the probe to increase or decrease the audio volume.
•
If the sound is not very clear or too still, you can move the probe slowly until it is
clear enough.
•
After checking, turn off the power. The LED (2) on the probe will turn off.
DON'T PANIC
Double heart beat
Sometimes the fetal doppler appears to pick up two separate
heartbeats. Don't panic – this does not necessarily mean you are
having twins! The way the sound waves reflect off baby's heart
sometimes causes this to occur. Be sure to count the beats of each
separate heartbeat; twins will have two different heart rates.
If You Can't Hear the Heartbeat
It is often very difficult to hear your baby's heart beat using a fetal
doppler. If you are early in your pregnancy, the heartbeat may not be
strong enough to hear with this machine. Or your baby may simply
be in a position that doesn't allow the doppler to pick up the heart
rate.
Whatever you do, try not to panic!
Perform each test when your bladder is full, so that your uterus is
pushed up closer to the face of the doppler. If you still can't hear the
heartbeat, test again later or visit with your health care provider – she
can advise you on how to use your doppler.
7
Specification
Frequency
Comprehensive sensibility
Power source
Environmental temperature for using
Environmental humidity for using
Environmental temperature for
storage
Environmental humidity for storage
Environmental pressure
Battery life
Classification
6
2.9MHZ
>90dB
DC 9V
5°C to 40°C
<80%
-20°C to 55°C
<95%
Atmosphere pressure
Approx.3 months with 3 minutes
usage per day.
Internally powered equipment, type B
applied part.