Mindray DPM 4 Service Manual

2-12
The biasing circuit adjusts the dynamic range of the signal, and sends it to the A/D conversion
part.
A/D
The A/D conversion part converts the analog signal to the digital signal, and then sends it to CPU
for further processing.
D/A
The D/A conversion part converts the digital signal received from CPU to the analog signal, and
provides the control signal for the Led Drive Circuit and SPO2 Signal Process Network.
CPU System
 Implementing the logical control of all the circuits;
 Implementing the data processing for the SpO
2
parameter;
 Implementing the communication with the CPU board.
Power & Signal isolate Circuit
 Isolating the external circuits to ensure the safety of human body;
 Supplying power for all circuits;
 Implementing the isolation communication between the CPU System and the CPU board.

Mindray DPM 4 Specifications

General

Brand	Mindray
Model	DPM 4
Category	Medical Equipment
Language	English