6-2 6 Hardware
6.3 Circuit boards
The following table lists the number and the function description of the circuit
boards.
Table 6-1 Circuit Boards of BS-120/BS-130/BS-180/BS-190
PCBA（
（（
（PCB）
））
）
Function
Number
in
Figure
6-1
Main board
BA10-30-77755
(BA10-20-77754)
As the main control part of the
BS-120/BS-130/BS-180/BS-190, the main board
communicates with PC through serial port RS232
and transmits data and commands; also it
transmits data and commands to other sub-units
(ISE, etc) through extended serial ports; This unit
can control the AD conversion board to adjust the
numerical control resistor and collect the
photoelectric data. It can also control the reaction
disk temperature sampling board to collect the
temperature data.
#1
Drive board
BA10-30-77757
(BA10-20-77756)
This board can control and drive the reaction
disk, the reagent\sample disk, the sampling
probe, the mixer, the filter wheel, the pumps, the
valve, the lamp and the temperature controlling
system to act.
#2
Reaction disk
temperature
sampling board
BA10-30-78268
(BA10-20-78267)
This board collects the temperature sensor
signals from the reaction disk and converts them
into digital signals.
#7
Reagent
refrigeration board
BA20-30-75227
(BA20-20-75226)
This board is used to cool the reagents, indicate
the temperature and drive the fan and defog
circuit.
#8
Level detection
board
051-000141-00
(050-000124-00)
This board can detect the level of the reagent or
sample and detect the vertical obstructions
occurring to the sampling probe.
#11
AD conversion
board
BA10-30-77759
(BA10-20-77758)
This board can modify the analog signals from
the pre-amp board and convert the analog
signals into the digital signals. Also this board
provides an SPI (Serial Port Interface) for
connection with the main board.
#10
Preamplification
board
BA10-30-77760
(BA10-20-78200)
This board can convert the light signals into the
electrical analog signals by the photoelectric
diode.
#9
Heater voltage
selecting board
This board can provide a sutiable way to connect
with the power for the reaction disk heater in
different AC power environments.
#4
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