Mindray Vital Signs VS-800 VS800 Patient Monitor Parts FRV 004 Dainboard

Mindray Vital Signs VS-800 VS800 Patient Monitor FRV 004Dainboard Mother Board

►Brief Introduction

The core of the system is the main board, from which the power is adapted to all parameter modules; the parameter modules directly communicate with the main board, and the measurement and status of all modules are controlled by the main board.

The main board communicates with all parameter modules and recorder module through serial ports; the power of the parameter modules is adapted from the main board.

The main board supplies displaying information for the key&displays board detects the keys and realizes the user’s interface.

The audio process circuit of the main board drives the speaker, thus to realize audible alarms, key tones and PITCHTON.

The main board controls the alarm indicator through the signal wire is adapted from the key&displays board.

In addition, the main board provides the nurse call connector, network connector and R232 connector.

► Principle diagram

► Units of main board

1. FPGA

• Controlling STN-LCD
• Extending serial ports
• Extending I/O port
• Generating frequency-adjustable signal

2. Audio process circuit

Following the common scheme regarding the key&displays board audio process circuit, the audio process circuit generates envelope signals by using the PWM function of the CPU, and enerates audio frequency signals by using the FPGA.

3. ADC circuit

The ADC circuit detects ADV, +12V and battery voltages as well as the battery status voltage by using the A/D converter. The A/D converter Provides a I2 C bus interface. The CPU simulates the I2 C bus signal with two I/O ports.

4. Network connector

To guarantee that the earth wire of the network connector can pass the 1500V high-voltage test, isolated components such as the network transformer must be placed near the RJ45 socket and kept a specific distance from other components.

5. RS232 connector

The RS232 connector is made of the UART module of the CPU and the RS232 chip. The RS232 chip has the ESD protection function (±15KV).

6. NURSE CALL connector

The NURSE CALL connector controls the NURSE CALL signal by using an I/O port extended by the FPGA.

► Operation Environment

► About Us

CWT Technology HK Limited, we are a trustworthy medical equipments supplier as we have been engaged in this industry for many years. During these years of marketing and expanding, we have accumulated a great wealth of experience both in product distribution and customer service. We mainly sell different kinds of medical equipments, accessories and repair parts including patient monitor, defibrillator machine, patient monitor printer, ECG machine, EKG machine, main board, batteries and so on. We are a reliable manufacturer providing the best products and services for global customers. Satisfying all the customers' demands is our permanent pursuit.

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