System Processing Description
86 N5500 Service Manual
Technical
Information, N5500
l
Temperature unit :
measures temperature data.
DC +5V
Isolation DC/DC
Isolation DC +/-5V, +/-12V
Patient Isolation
Constant Crrent Source
AMP &
Filter
Reference
Temperature Probe
PIC16C65B_P
Constant Crrent Source
AMP &
Filter
Reference
Temperature Probe
Analog to Digital
Converter
(MCP3204)
Figure 23. Temperature Unit Block Diagram
l
Analog control unit:
analog circuit control, PIC16C65 – selection of ECG channels
and filter, size adjustment, verification of lead off, QRS, heart rate, etc.
Asyncronous Serial Communication
with Communication UNIT
PIC16C65B_P
Photocoupler
Isolation DC/DC
DC +5V
Isolation DC +/-5V
Patient Isolation
ECG Lead Off
ECG Filter Selection
Temperature 1 Input
Respiration Gain Control
ECG Pace Pulse Detection
Temperature 2 Input
ECG Gain Control
Temperature 1 Calibration
Temperature 2 Calibration
Figure 24. Analog Control Unit Block Diagram
External Interface
l
TCP/IP
: Network connector
l
Serial I/O
: a female 15 pin sub-miniature D shell connector
Содержание OxiMax N 5500
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