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Human Interface Controller; Battery Controller; Ecg Out/marker In Controller - Philips M3001A Service Manual

M3/m4 monitors,measurement server,measurement server extensions.
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Functional Description of the Monitor Hardware

Human Interface Controller

The Human Interface Controller (HIF) is the interface between the operator and the Monitor
itself. It monitors the operator controls and the Battery Controller, formats the data, and
routes it to the Display & Operator Controls Manager from which it receives commands and
status also. As well, the HIF controls the features listed below.
Visual Indicators
The Instrument is fitted with the following front panel indicators:
• Yellow LED—This flashes in addition to the visual indication on the LCD display when a
yellow-alarm situation occurs (medium severity alarm).
• Red LED—This flashes in addition to the visual indication on the LCD display and the
audible tone from the loudspeaker when a red-alarm situation occurs (high severity alarm).
• Crossed Bell LED—This is illuminated when all alarms have been suspended.
Alarm Relay
In addition to the audible and visual alarms, an alarm relay is provided, which energizes
when an alarm condition occurs. This enables a remote alarm indicator (such as a Nurse Call)
to be connected to the device.

Battery Controller

The battery controller is the interface to the Smart battery. Signals from the battery inform the
battery controller of the most effective charging current with which to load the battery. Two
LEDs are mounted on the Battery Controller:
• Battery LED—This is illuminated green if the battery is fully charged and yellow if the
battery is charging. If the remaining battery-operating time is only 5 minutes, the LED
flashes red at a repetition rate of 1.5 flashes per second.
• AC LED—This is illuminated green when the power cord is connected and AC power is
available. Otherwise it is extinguished. The AC LED is fed directly from the AC power
supply.
For a detailed description of the battery, see chapter 3, "Maintaining the Instrument".

ECG Out/Marker In Controller

The ECG Out/Marker In Controller is the interface between the Monitor and any defibrillator
that might be connected. It converts a digital waveform signal received from the
Measurement Server ECG/Respiration module into an analog ECG signal, which it feeds to
the defibrillator in order to synchronize it. The ECG Out controller also processes the marker
information from the defibrillator and feeds the data back to the Measurement Server ECG/
Respiration measurement module.
18
Introduction to the Instrument

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