Philips Avalon FM20, Руководство по обслуживанию

Страница: 228 / 260

12 Specifications
228
Battery Specifications
Fetal / Maternal Specifications
Ultrasound
Complies with IEC 60601-2-37:2007 / EN 60601-2-37:2008
Buffered Memory Hold Time if powered by AC infinite
without power: at least 8 hours
Contents active settings, review alarms, stored trace data
Fetal Monitor Performance Specifications
Performance Specifications
Avalon FM20/30 Battery
Option #E25 Operating Time
(with new, fully charged
battery) Basic monitoring configuration: >2 hours
(Display Brightness: 70%, Recorder: "On" at 3 cm/min,
NBP: Auto Mode at 15 min, 2 US Transducers, 1 Toco+
with MECG, 1 Patient Module with DECG)
Charge Time When monitor is off: approx. 6 hours
When monitor is in use: more than 10 hours (depending on
monitor configuration).
Performance Specifications
Ultrasound
Measurement Method Ultrasound Pulse Doppler
Measurement Range US 50—240 bpm
Resolution Display 1 bpm
Printer 1/4 bpm
Jitter @ 200 bpm ≤ 3 bpm
Display Update Rate 1 per second
US Intensity (M2736A/AA) Average output power P = (7.4 ± 0.4) mW
Peak-negative acoustic pressure p_ = (40.4 ± 4.3) kPa
Output beam intensity (I
ob
)
(= spatial average - temporal average
intensity)
I
sata
= (2.38 ± 0.59) mW/cm
2
Spatial-peak temporal average intensity I
spta
= (15.0 ± 3.2) mW/cm
2
Effective radiating area @ -12 dB (3.11 ± 0.74) cm
2
Thermal index (TI) and mechanical index (MI) are always below 1.0.