Mindray VS-900 - Page 20

2-6
AC/DC Power Module
The AC/DC power board transforms the input AC into DC power, which is the power source
for all voltages in the equipment.
Power Management and Interface Board
The power management and interface board mainly provides the following functions:
 Charge and discharge of battery and charge detection;
 DC/DC conversion: outputs 12V and 5V DC power;
 Control over power on/off key and AC, BAT indicator;
 Communication transmission among parameter modules;
 Providing isolation power for Mindray/OEM SpO
2
module; and,
 Providing external connectors, and also filter and protection for these connectors.
Recorder
The recorder receives data from the main board and sends them to the thermal printhead
for printing.
NIBP Module
The NIBP module consists of blood pressure measurement board and pump and valve
assembly, providing measurement acquisition of blood pressure data. The main functions of
the NIBP module are:
 NIBP measurement; and,
 Data exchange with the main board through the serial ports.
SpO
2
Board
The independently developed Mindray SpO
2
board provides SpO
2
measurement as good as
other boards but with smaller size and lower consumption. The power management and
interface board is also compatible with Nellcor NELL-1 SpO
2
board and Masimo MS-2013
SpO
2
board.
The SpO
2
board collects SpO
2
signals, processes SpO
2
algorithm and sends measurement
results to the main board. The power management interface board provides isolation power
for it.
CO
2
Module
The CO
2
monitoring is a continuous, non-invasive technique for determining the
concentration of CO
2
in the patient’ airway by measuring the absorption of infrared (IR) light
of specific wavelengths. The main functions of the CO
2
module are:
 Provides a CO
2
waveform, and EtCO2, FiCO
2
, awRR measurement; and
 Data exchange with the main board through the serial ports.