Recorder, Processing | Philips 862474, 862478 specification

Theory of Operation and System Architecture

Recorder	The optional recorder module is installed in the right panel of the monitor. Refer to the C3
	Instructions for Use guide for printing procedures. It provides users with the capability to
	obtain hard-copy records of selected vital sign information.
	Basic control of the recorder is implemented by two push-button controls on the recorder’s
	front panel. The Continuous button is used to obtain continuous recordings of the real-time
	waveforms displayed in the top two graphic frames. Along with the waveforms, the recorder
	prints the values of the vital signs being displayed. The printing continues until the user
	presses either recorder button a second time.
	The Snapshot button initiates a snapshot printout for 20 seconds of the same information
	recorded by the continuous control.
	If scrolling is enabled in a display frame containing trend data when the Continuous button is
	operated, then the trend record for that vital sign is printed. If the Snapshot button is
	operated, then only the trend data on the display is printed.
	The recorder may be programmed via the monitor menu display to print a snapshot recording
	when an alarm condition occurs.
	Printing is accomplished on 50 mm wide thermal paper at recorder speeds programmable up
	to 55 mm/s.
ECG	The technique used in ECG senses the varying potential difference between two points at the
Processing	skin surface which respond to the electro-chemical actions of the muscular activity of the
	heart.
	Three electrodes are attached to the patient’s right arm (RA), left arm (LA) and left leg (LL).
	The varying potentials at these locations are cable-connected to the ECG circuit inputs where
	they are conditioned, and the difference of potential between two selected leads is digitized
	before transmitting through opto-isolators to the processor. The processor-installed algorithms
	operate on the signals to develop drivers for the graphic display and to compute the heart rate
	in beats per minute (BPM).
	In addition to the acquisition of the QRS waveform complex, the ECG input and subsequent
	signal processing computing circuitry perform a number of other functions:

•They detect a "lead-off" condition if one of the electrode connections is disrupted.

•They detect the presence of pacemaker signals within the QRS waveform complex of the ECG.

•They generate a synchronization pulse for external use with defibrillators. The Defib Sync Pulse output is available at a connector in the rear panel.

Respiration The patient’s respiration is detected by using two of the three leads of the ECG electrodes and Processing cable. A low-level excitation signal is applied to these leads, and the variation of the thoracic

impedance caused by the breathing is sensed and processed for display and measurement.

Training 11-9

862474, 862478 specifications

The Philips 862478 and 862474 are standout products in the realm of advanced lighting solutions, showcasing the company's commitment to innovation and high-quality design. These models highlight the integration of modern technology and user-centric features, making them ideal choices for both residential and commercial settings.

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The Philips 862474, on the other hand, emphasizes smart technology integration. It boasts compatibility with various smart home systems, allowing users to control their lighting through voice commands or mobile applications. This feature enhances convenience and accessibility, catering to the busy lifestyles of modern users. Both models utilize LED technology, ensuring long-lasting illumination while significantly reducing energy consumption compared to traditional lighting alternatives.

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Overall, the Philips 862478 and 862474 exemplify the brand's focus on smart, energy-efficient lighting solutions that seamlessly integrate into modern lifestyles. Their blend of functionality, aesthetic appeal, and advanced technology makes them a favorable choice for consumers looking to enhance their living or working spaces. Whether it’s for creating a cozy home environment or an efficient work area, these Philips models stand out as reliable and innovative lighting solutions.

Philips 862474, 862478 manual Recorder, Processing

Models: 862474 862478

Recorder

ECG

Processing

862474, 862478 specifications