CPU Board M1353-66503 and M1353-66513 | Philips M1351A, M1353A

CPU Board (M1353-66503 and M1353-66513)

CMOS RAM memory, backed by a battery to store short time device settings etc.

A non-volatile EEPROM memory for permanent device and user settings.

A real-time clock, battery-backed and power-fail protected. The processor has

naccess to all clock registers.

The multiplexer ASIC contains a watchdog function which monitors the operation of the microprocessor and restarts the system if it is not served at a

l constant rate.

AD/DA Section:

After system startup, the CPU starts the A/D control chip, which divides the signal from the clock circuit and generates an interrupt every 2.5 ms.

The 68000 on the CPU Board then programs the multiplexer to select the analog channels for A/D conversion: the analog/digital conversion of up to eight channels is done by the multiplexer without further intervention by the CPU. A/ D conversion is by successive approximation. After the next interrupt, the CPU reads the results stored in registers within the multiplexer. The multiplexer also receives values from the CPU for audio output.

All LF signals are multiplexed, sampled at either 1600 or 800Hz, and A/D

lconverted with 12-bit resolution.

Digital Signal Processing Section:

nSignal processor and RAM. DMA logic.

lDSP software rebooted when the US2 channel socket is connected/disconnected. Bus Control Section:

Address and data bus control chips.

Board select logic to access all system boards.

nDMA circuits to allow DMA access via the system bus to the Combined Interface.

A crystal quartz oscillator and related circuitry provide several local and bus clock l frequencies.

Service Interface: An RS232 serial interface is provided for use during production and service. Connection is via a stereo phone jack on the front panel.

nSerial interface for option and software upgrades. Settings and configuration via an external computer.

Chapter 6 Theory of Operation

M1353A, M1351A specifications

Philips M1351A and M1353A are advanced medical monitoring devices designed to enhance patient care in various healthcare settings. These monitors are widely recognized for their precision, reliability, and user-friendly interface, making them essential tools for clinicians and healthcare providers.

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In terms of connectivity, these models facilitate seamless integration with hospital networks and electronic medical records (EMR) systems. This interoperability enhances the overall workflow in a clinical environment, allowing patient information to be shared efficiently amongst healthcare teams.

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In summary, the Philips M1351A and M1353A monitors serve as essential tools in contemporary medical practice, offering comprehensive monitoring capabilities, advanced technologies, and a user-centric design. These features collectively contribute to improved patient outcomes and enhanced overall healthcare delivery.

Philips M1351A, M1353A manual CPU Board M1353-66503 and M1353-66513

Models: M1353A M1351A

CPU Board (M1353-66503 and M1353-66513)

M1353A, M1351A specifications