Ivy Biomedical Systems 101R User Manual

Table of Contents
MONITOR TESTING .......................................................................................................................................23
CLEANING ........................................................................................................................................................24
Monitor................................................................................................................................................................24
Patient Cables .....................................................................................................................................................24
ACCESSORIES..................................................................................................................................................25
Disposal................................................................................................................................................................25
THEORY OF OPERATION.............................................................................................................................26
General ................................................................................................................................................................26
High Voltage Power Supply and Video Amplifier...........................................................................................26
Purpose of the High Voltage Power Supply...........................................................................................26
CRT Theory ...........................................................................................................................................26
Raster and Stroke Written Displays .......................................................................................................26
Timer Circuit..........................................................................................................................................27
High Voltage Module.............................................................................................................................27
Feedback Amplifier................................................................................................................................27
Adjustment Circuit.................................................................................................................................28
Cathode Generation Circuit....................................................................................................................28
Low Voltage Power Supplies .............................................................................................................................29
DC Voltages...........................................................................................................................................29
Isolated DC Voltages .............................................................................................................................29
ECG Input...........................................................................................................................................................29
Isolated Amplifiers.................................................................................................................................29
Lead Off Sensor .....................................................................................................................................29
Shield Drive ...........................................................................................................................................29
Lead Selection........................................................................................................................................29
Test Signal Generation...........................................................................................................................30
ECG Waveform..................................................................................................................................................30
ECF Filter...............................................................................................................................................30
X1000 Output.........................................................................................................................................30
ECG Gain...............................................................................................................................................30
A/D Converter........................................................................................................................................30
Cardiotach...........................................................................................................................................................31
Peak Detector .........................................................................................................................................31
Rate Computation...................................................................................................................................32
Alarm Generation...................................................................................................................................32
CRT Signals ........................................................................................................................................................32
Vertical Deflection.................................................................................................................................32
Horizontal Deflection.............................................................................................................................32
Horizontal Correction.............................................................................................................................32
Unblanking.............................................................................................................................................33
Audio Circuits.....................................................................................................................................................33
ECG Audio.............................................................................................................................................33
Alert Audio...................................................................................................................
..........................33
Digital Circuitry..................................................................................................................................................34
ii Model 101R/NR Service Manual

Ivy Biomedical Systems 101R Specifications

General

Brand	Ivy Biomedical Systems
Model	101R
Category	Monitor
Language	English