The Avalon Cordless Transducer System (CTS) helps transform labor and delivery, offering mothers and
care teams the flexibility they seek by allowing comfortable, continuous fetal and maternal monitoring with
exceptional mobility. Avalon CTS helps provide a constant and clear picture of patient status for confident
decision-making.

• Cordless toco transducer: externally measures uterine activity
• Cordless ultrasound transducer: measures fetal movement and heart rate
• Bed identifier: matches transducers and base stations for each bed
• Base station receives transducer signals: and recharges plugged-in transducers
• Transducer plug and play with automatic screen layout, in combination with Philips fetal monitors, allows focus on patient care, not the system
• Transducer status indicators: shows how clearly system is working at all times
• Slot position indicator: helps ensure each transducer is returned to its proper home position
• Cordless ECG transducer: measures direct fetal ECG or maternal ECG
• Battery charge indicator: shows status of charge (Batteries operate at least 16 hours

Philips Avalon CTS M1351a Specifications

Base Dimensions

• Width: 350 mm ( 13.8 in)
• Depth: 240 mm (9.5 in)
• Height: 75 mm (3 in)
• Weight 2.5kg/5.5 lbs without transducers

Transducer Dimensions

• Size (diameter) < 10 cm/3.94 in
• Weight < 140 g/4.8 oz

Power

• Supply Voltages 100 VAC to 240 VAC ± 10%
• Supply Frequency Range 50 Hz to 60 Hz
• Consumption 15 VA

Base Station

• Type of Protection Against Electrical Shock: Class I equipment
• Input Sensitivity Input Sensitivity -110 dBm @ 30dB Signal-to-Noise Ratio
• Image Rejection Image Rejection > 80dB
• Ranges
  • Receiving Range (line of sight) approximately 100m/300 ft
• Antenna Input Impedance 50 O
• Water Ingress Protection Code IP X1 (protection only against vertically falling water drops)

Monitor Interface

• Toco Output
  • Accuracy ± 0,5% per 100 mmHg (not including transmitter)
  • Offset ± 5 Units (not including transmitter)
  • Range 0 to 4V
• Voltage Range
  • US Voltage range 4mVpp to 4Vpp
  • ECG Voltage range 0.1Vpp to 4Vpp

Battery

• Type Lithium Ion
• Capacity > 16 hours (> 700mAh)
• Life > 500 charge/discharge cycles (with new battery, at 25°C/77°F)
• Transducer Storage Time
  • = 1 year at 25°C/77°F (battery full)
  • = 1 month at 25°C/77°F (battery empty)
• Recharging Time
  • 100% charged < 3h
  • 66% charged = 1h
• Forced discharge current approx. 45mA
• Discharge leakage current in shutdown @ Vbat = 3V, 25°C 20 µA (typical), 70 µA (max)

RF Unit

• Nominal RF Output Power -12 dBm ± 6 dB ERP
• Carrier Frequency Range See Frequency Bands
• Minimum Frequency Band Span Per Option 10 MHz
• Channel spacing 25kHz or 12.5kHz

General Transducer Specifications

• Shock Resistance Withstands a 1m drop to concrete surface with possible cosmetic damage
• Usability Underwater 0.5m/1.64 ft
• Water Ingress Protection Code IP 68 (0.5m/1.64 ft immersion for 5 hours)

Environmental

• Temperature Range
  • Charging 0°C to 45°C (32°F to 113°F)
  • Operating 0°C to 45°C (32°F to 113°F)
  • Storage (without battery) -20°C to +60°C (-4°F to 158°F)
  • Storage with battery Depends on initial charge level and temperature (storage time decreases significantly at high (> 45°C/ 113°F) temperatures
• Humidity Range
  • Operating 5% to 95% relative humidity @ 40°C/104°F
  • Storage 5% to 85% relative humidity @ 50°C/122°F
• Altitude Range
  • Operating = 3000m/9800 ft
  • Storage = 15000m/49000 ft