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(6) Headset (Option) can be used to listen to
Doppler sounds. It will cut off the speaker.
2-6. Measuring fetal heart rate (2 MHz only)
This section explains the fundamental use of measuring fetal heart rate. Refer to “3.
Appearance and Mode Settings” for various uses.
(1) Connect the probe to the probe connector so
that the polarity mark will be placed under
mark as shown in the right (12 o’clock).
(2) Put ultrasonic gel on the probe top or the skin
surface.
(3) Press Power button to turn the unit on. Turn the
volume control to maximum.
(4) If you wish to monitor heart rate waveform, see
“3-2-3-g. DISP (Waveform / Data)” to change the
mode.
(5) Put the probe on the middle of the abdomen at
right angle to the skin surface, and move it
slowly to locate the point where the maximum
heart beat Doppler sounds are heard.
Caution: Verify the fetal heart rate.
(Maternal heart rates match the maternal pulse
rates.)
Headset connector
Polarity mark
Power button
Volume control
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