10
Same as mode 1.
Enter Key
Functions: Different in every mode,.
Mode 1: Auto mode.
Switch the working mode between Auto mode and Manual mode.
Mode 2: Play music mode.
Press the button once. Change to Warn sound on/off mode.
Press it again. Change to FHR lower restrict configure mode.
Press it next time. Change to FHR higher restrict configure mode.
Press it again, the working mode back to Play music mode.
Mode 3: Playback mode.
Same as mode 2.
Mode 4: Audio record mode.
Press the button once. Benign recording the fetal heartbeat sound. The
most recording time is 60 seconds.
If recording reach 60 seconds, the working mode is changed to mode 1
automatically.
If recording not reach 60 seconds, press the function key, the working
mode changed to mode 1, and the recording time in the record module is
not reach 60 seconds.
3.2.3 Display panel
①
FHR refresh frequency:
