Chapter 2 System Description
2–26 L2707
Technical Reference Manual
Vmax Encore
ANALYZER CONTROLLER BOARD
The Analyzer Control Board is another main circuit board that carries out many functions. Its main
function is to provide signal-conditioning circuits for all the system’s analyzers and to provide
source voltages for the CO2 and Multi-gas analyzers. The functions of the Analyzer control Board
are listed below.
• Provide signal conditioning circuitry for:
• O2 Sensor
• CO2 Analyzer
• CH4 signal from the Multi-gas Analyzer
• CO signal from the Multi-gas Analyzer
• Provide Source voltages for the CO2 and the Multi-gas Analyzers
• Provides switchable (off and on) +5 V dc to the sample pump
• Provides multiplexing of the following signals to the Mass Flow Sensor Board as EX1:
• 8 analog inputs from External I/O pod
• 3 ECG analog signals through the External I/O pod, from ECG pod
• 4 analyzer output signals from item 1 above
• Provides 3 TTL control lines to the External I/O pod
• Provides 4 analog output signals to the External I/O pod
• Provides variable drive signal for the blower/fan in the Pneumatics Assembly
• Provides drive signals for solenoid valves in the Pneumatics Assembly on the Solenoid
Board.
• Provides drive signal for the safety alarm in the Pneumatics Assembly on the blower/fan
assembly.
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