Philips Avalon FM20 Instructions For Use Manual page 193

Fetal / Maternal Specifications
Performance Specifications
Ultrasound
Measurement Method
Measurement Range
Resolution
Jitter @ 200 bpm
Display Update Rate
US Intensity
Signal Quality Indication
Beat-to-Beat Change (max.) for Ultrasound
US Frequency
US Signal range
US Burst
US LF Frequency Passband @ -3dB
FMP Signal Range @ 33 Hz
FMP Frequency Passband @ -3dB
Toco
Measurement Method
Sensitivity
Resolution
Measurement Range
Signal Range
Maximum Offset Range
Baseline Setting
Update Rate
US
Display
Printer
Average output power
Peak-negative acoustic pressure
Output beam intensity (I
ob
(= spatial average - temporal average
intensity)
Spatial-peak temporal average intensity
Effective radiating area @ -12 dB
Poor Quality
Acceptable Quality
Good Quality
Repetition Rate
Duration
Display
Printer
Display
Printer
26 Specifications and Standards Compliance
Ultrasound Pulse Doppler
50 to 240 bpm
1 bpm
1/4 bpm
≤ 3 bpm
1 / second
P = (7.4 ± 0.4) mW
p_ = (40.4 ± 4.3) kPa
) I = (2.38 ± 0.59) mW/cm
sata
I = (15.0 ± 3.2) mW/cm
spta
(3.11 ± 0.74) cm
Empty
Half-full
Full
28 bpm
1 MHz ± 100 Hz
3.5 µVpp to 350 µVpp @ 200 Hz
3.0 kHz
≤ 100 µs
100 to 500 Hz ± 20%
200 µVpp to 40 µVpp
10 to 100 Hz
Strain Gauge Sensor Element
1 unit = 2.5 g
1 unit
1/4 unit
400 units
0 to 127 units
-300 units
20 units
1 / second
~4 / seconds
2
2
2
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