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3.2.2 Mode Button
Function: Mode selection, press once to enter next working mode under working
status. For the Fetal Doppler has memory function, when turning on the
machine, it will enter the mode selected before last power off automatically after
self testing.
3.2.3 Start/Stop Button
Function: Start/Stop control.
Under model 3, press this button the fetal heart rate counting starts, press this
button again the counting stops.
3.2.4 Volume Control Indicator
Volume adjusting direction indicator.
From left to right means that the sound level is from high to low.
3.3 Headphone Socket
Headphone Socket: a socket for audio output, and can be connected
with earphone or recorder with audio input to record.
The socket, terminal post, or switch that connected with the
headphones. Accessory equipment connected to the analog and digital
interfaces must be certified according M the respective IEC standards (e.g. IEC
950 for data processing equipment and IEC 60601-1 for medical equipment).
Furthermore all configurations shall comply with the valid version of the system
standard IEC60601-1-1. Everybody who connects additional equipment to the
signal input connector or signal output connector configures a medical system,
and is therefore responsible that the system complies with the requirements
of the valid version of the system standard IEC60601-1-1. If in doubt, consult
our technical service department or your local distributor.
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