Mindray DPM 4 - 2.2.2 ECG;RESP;TEMP Module

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Analog Output
The D/A converter converts the digital ECG/IBP signals sent from CPU to the analog signals,
which are provided for the external after low-pass filtered by the filter and amplified by the
amplifier.
FPGA and VRAM
VRAM stores the displayed data. CPU stores the displayed data to VRAM through FPGA. FPGA
gets data from VRAM, processes them, and then sends them to the relevant graphic display
device.
In addition, FPGA also extends multiple serial ports, which communicate with peripheral
modules. FPGA transfers the received data to CPU through the bus; CPU delivers data to FPGA
through the bus, and then the FPGA transfers those data to the peripheral modules.
Watchdog
When powered on, watchdog provides reset signals for CPU, FPGA and Ethernet Controller.
The patient monitor provides the watchdog timer output and voltage detection functions.
2.2.2 ECG/RESP/TEMP Module
2.2.2.1 General
This module provides the function of measuring three parameters: electrocardiograph (ECG),
respiration (RESP) and temperature (TEMP).