Technical Discussion
N-595
115
The patient is connected to the N-595 via a sensor and pulse oximetry cable.
The SpO
2
analog front end drives the sensor’s LEDs, conditions the incoming
signal, and provides adjustable gain status. The microprocessor measures the
sensor’s analog outputs and continually controls the gain stages and LED
drive current to ensure that the signals are within the measurement range.
The N-595 has a 240 x 64 liquid-crystal display (LCD) which provides
various display capabilities including numeric readouts for SpO
2
and beats
per minute (BPM) pulse rate, graphical pleth wave and pulse blip bar, menu
selection elements, and status/error messages. There is also a membrane panel
consisting of nine buttons and five LED indicators. The buttons allow the user
to navigate through and input menu selections using the LCD and LED
interfaces. The LED indicators provide feedback to the user on various N-595
and sensor conditions. The N-595 contains a speaker for audio output.
The static RAM and the RTC for the microprocessor are powered whenever
the N-595 has power, either AC power or battery power. This allows time and
certain data to be maintained, even while the N-595 is turned off.
Schematic
Diagrams and
Assembly
Drawings
Figure 27: Main PCB Schematic Diagram (Sheet 1 of 13)
Figure 28: Main PCB Schematic Diagram (Sheet 2 of 13)
Figure 29: Main PCB Schematic Diagram (Sheet 3 of 13)
Figure 30: Main PCB Schematic Diagram (Sheet 4 of 13)
Figure 31: Main PCB Schematic Diagram (Sheet 5 of 13)
Figure 32: Main PCB Schematic Diagram (Sheet 6 of 13)
Figure 33: Main PCB Schematic Diagram (Sheet 7 of 13)
Figure 34: Main PCB Schematic Diagram (Sheet 8 of 13)
Figure 35: Main PCB Schematic Diagram (Sheet 9 of 13)
Figure 36: Main PCB Schematic Diagram (Sheet 10 of 13)
Figure 37: Main PCB Schematic Diagram (Sheet 11 of 13)
Figure 38: Main PCB Schematic Diagram (Sheet 12 of 13)
Figure 39: Main PCB Schematic Diagram (Sheet 13 of 13)
Summary of Contents for OXIMAX N-595
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Page 13: ...Introduction N 595 5 Figure 4 Trend Softkey Map...
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Page 98: ...Data Port Interface Protocol 90 Figure 19 Data Port Setup...
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Page 125: ...Figure 27 Main PCB Schematic Diagram Sheet 1 of 13 117...
Page 126: ...Figure 28 Main PCB Schematic Diagram Sheet 2 of 13 119...
Page 127: ...Figure 29 Main PCB Schematic Diagram Sheet 3 of 13 121...
Page 128: ...Figure 30 Main PCB Schematic Diagram Sheet 4 of 13 123...
Page 129: ...Figure 31 Main PCB Schematic Diagram Sheet 5 of 13 125...
Page 130: ...Figure 32 Main PCB Schematic Diagram Sheet 6 of 13 127...
Page 131: ...Figure 33 Main PCB Schematic Diagram Sheet 7 of 13 129...
Page 132: ...Figure 34 Main PCB Schematic Diagram Sheet 8 of 13 131...
Page 133: ...Figure 35 Main PCB Schematic Diagram Sheet 9 of 13 133...
Page 134: ...Figure 36 Main PCB Schematic Diagram Sheet 10 of 13 135...
Page 135: ...Figure 37 Main PCB Schematic Diagram Sheet 11 of 13 137...
Page 136: ...Figure 38 Main PCB Schematic Diagram Sheet 12 of 13 139...
Page 137: ...Figure 39 Main PCB Schematic Diagram Sheet 13 of 13 141...
Page 138: ...Figure 40 Main PCB Assembly Drawing Front View 143...
Page 141: ...Figure 43 Linear Power Supply Assembly Drawing 149 AC FERRITE DC FERRITE...