FC1400 User Manual
FC1400OM-2.04 38 / 95
FC1400 Operation Manual
Chapter 5. FHR measurement using US
FHRs are measured by obtaining the heartbeat sounds of the fetus using ultrasonic Doppler effects
and subsequently calculating and saving the heart rate per minute in real time. Since ultrasounds are
reduced considerably in the air, please apply sufficient amounts of ultrasonic gel to the surface of US
probes to remove any air layer before using US probes.
This equipment adjusts the volume automatically according to the amount of input data. When no
input occurs while probe is connected, the noise will increase. In the running condition of the
equipment, turn on the Mute by long pressing volume down key when not measured, long press
volume up key to return back to the previous setting for the measurement.
1) FHR measurement
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US probe connection
Please connect US probes to the
“US1” and “US2” connection terminals on the left side of the
equipment to use the US probes.
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US probe
<New Probe>
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Basic operations following a US probe connection
When US Probe is not connected to main body, nothing will display of FHR area. On the other hand,
connection of US Probe will change displaye to “---“ of FHR area. When a US probe has been put into
the “US1” connection terminal, a numerical value will be displayed in the FHR display area, indicating
that the system is ready to measure FHRs.
