Dinamap Pro 100V2 Wartungshandbuch PDF herunterladen (Seite 49)

Revision A PRO 100-400 V2 Patient Monitor Service Manual 3-9

2009829-001

Theory of Operation: 3.3 FUNCTIONAL DESCRIPTION

communications, and isolation between SPO2 PWA and Primary

Processor.

Patient data received from the finger sensor is filtered, amplified, and

analyzed on the SPO2 PWA. The information is sent to the Main

Board via the optically coupled electrically isolated serial connection.

The Primary Processor receives the data and distributes it to the

appropriate display. The data is also sent to the printer via the

Secondary Processor.

3.3.5 Pneumatic Control Device

The Main Board transducers PT1 and PT2 sense cuff pressure and

raw oscillatory information. The analog signals are amplified,

buffered, and sent to an Analog to Digital (A/D) Converter. The

converter changes the analog signals to digital signals and routes

these signals to the Primary Processor. The Primary Processor

receives the digital signals via the data interface.

Appropriate valve and pump control signals are sent from the Primary

Processor to the PCGAL. The PCGAL then generates the appropriate

drive signals to the pump and valves.

If a fail-safe mode or overpressure condition occurs, the PCGAL

provides the appropriate control signals to insure a safe condition,

where the cuff vents to atmosphere pressure.

3.3.6 LCD Assembly

The LCD assembly is used as a message center. It displays patient

vital signs, alarm status, monitor set-up, limit violation, BP cycle and

the time the data was received. The Primary Processor controls the

LCD assembly. When the parameter signals are read by the Primary

Processor, it decodes these signals and routes the digitized signals to

the graphic LCD.

The LCD assembly is equipped with a variable lighting feature for the

graphic display. The Primary Processor controls the lighting feature,

automatically. When a low or medium ambient lighting condition

occurs, the Primary Processor sends a BACKLIGHT signal to adjust

the graphic display lighting with respect to the room lighting condition.

If the lighting condition is high, the Primary Processor sends a

BACKLIGHT_1 signal to switch off the graphic display lighting.

3.3.7 Printer PWA w/Printer

The Printer PWA w/printer communicates to the Primary Processor

via Secondary Processor data line. The printer receives power from

the Main Board via the Printer PWA. The printer sends a DATA OUT

(CONTROL DATA) signal to the Secondary Processor to notify of it’s

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