Circuit Description
Fetatrack310 Service Manual Issue3
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: [email protected] W:
www.doppler.co.uk
Ultrasound Technologies Ltd
Display
The microprocessor calculated rate value is passed as parallel bit values to the
display module connected to the Display and Recorder interface board. The display
phase can be adjusred by VR1 to allow for a better viewing angle.
Data Storage
Chart data is stored within the RAM ( U22) when the paper pack runs out. A
reflective opto sensor on the recorder module instructs the microprocessor when
paper is out and the system will the buffer the data for 20 mins.
Содержание Fetatrack 310
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Страница 56: ...Q12 collector Unit not printing Q12 collector Unit printing U28 pin 1 U28 pin 2 U28 pin 4 U28 pin 5...
Страница 57: ...L12 pin 2 VCC U29 pin 1 U29 pin 2 U29 pin 4 U29 pin 5...
Страница 58: ...L14 pin 2 15V Supply Rail D22 pin 2 D23 pin 1 Junction L15 pin 1...
Страница 59: ...Q14 Collector Q14 Base Q14 Emitter 15V Supply Rail...
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