Effective area of the ultrasonic transducer active element: 3.07cm
2
The acoustic coupling medium for normal use: ph: 5.5~8, Acoustic
impedance: ≤1.7*10
5
g /cm
2
·s
Working mode: Continuous wave doppler
Audio output:
Audio output power: <0.5 W
Audio out Socket: Φ3.5mm
Recommended battery type:
AA X 2, dry batteries
Continuous working time:
>1 hour
Performance:
Sensitivity: 16 weeks gestation
FHR Measuring Range:50 bpm -210bpm (beat per minute)
Resolution: 1bpm
Accuracy: ±2bpm
Environmental Requirements:
Operating Conditions:
Temperature: 5°C to 40°C
Humidity: <80% RH, non-condensing
Atmospheric pressure: 86 kPa to 106 kPa
Storage and Shipping Conditions:
Temperature: -20°C to 55°C
Humidity: 10 - 93% RH, non-condensing
Atmospheric pressure: 50 kPa to 106 kPa
Section 8: Troubleshooting
What appearance to be a malfunction may not always be serious, if your
unit should not perform as expected, consult the table below to see if the
problems can be corrected before seeking help from your dealer or service
representative.
Symptom
Cause
Remedy
Audio scream
● Audio volume too
high
● Too much Gel on
the probe surface
● Turn down the Volume
●
Use less Gel
