Mindray datascope duo Service Manual

Hardware Overview Theory of Operation
1 - 2 0070-10-0604-01 Duo™ Service Manual
1.2 Hardware Overview
FIGURE 1-1 Interconnection Block diagram
*The Isolated SpO
2
Power Supply is present with optional Masimo and Nellcor SpO
2
ONLY.
** The RS232 - TTL Inverter and Serial Interface Connector is used for software updates by Service
1.2.1 Power Supply Board
Overview
The AC/DC converter transforms the AC input voltage (90 - 264 vac 50/60 Hz) to a DC
voltage used to charge the internal Lithium-Ion battery and supply power to the +12 vdc and
+3.3 vdc DC/DC converters. The battery charging circuit will actively charge the battery
while the Duo is connected to an AC source. Battery charging takes place whether the
monitor is on, off, or in use. The power supply will automatically switch to the internal battery
if an AC source is not present.
NOTE: The power supply board MUST be connected to a resistive
load to operate properly and to avoid damage due to an
over current condition.
Patient Connectors
NIBP Module
Power Supply
CPU / Display pcb
AC Input
Lithium-Ion
Battery
Fan
Driver
External
Interface
RS232 - TTL
Inverter**
Serial
Interface**
Keypad Switches
SpO
2
Module
Isolated SpO
2
Power Supply*
AC Input
AC / DC
Converter
Battery and Charging
Management Circuit
3.3v DC/DC
Converter
12v DC/DC
Converter
Power ON / OFF
Control Circuit

Mindray datascope duo Specifications

General

Brand	Mindray
Model	datascope duo
Category	Medical Equipment
Language	English