2
Functional Description
Mass Spectrometer
Thermo Scientific
TSQ Quantum XLS Series User Guide
45
Electronic Assemblies
The electronic assemblies that control the operation of the mass spectrometer are distributed
among various PCBs and other modules located in the tower, in the embedded computer, and
on or around the vacuum manifold of the mass spectrometer.
The Power Entry Module provides the following:
• Mass spectrometer power control
• A contact closure interface
• Vent valve control
• An Ethernet 100 base-T connection from the System Control PCB to the data system PC
• A mechanical pump failure protection circuit (linked to vent valve control)
• A system reset button
• Status LEDs
• Service ports
The right-side power panel, shown in
, is part of the Power Entry
Module.
The Power Entry Module accepts line power, filters it, and provides it to various components
of the mass spectrometer. The Power Module includes these components:
• Main power circuit breaker switch
• Surge suppressor
• Line filter
• Electronics service switch
• Vacuum service switch
The “brains” of the mass spectrometers is the System Control PCB. The System Control PCB
and embedded computer include the following:
• PowerPC processor
• Serial Peripheral Interconnect (SPI) bus
• I/O coprocessor
• Super Harvard Architecture Computer (Sharc) bus
• Scan generator DSP
• Acquisition processor DSP
• Interbus bridge
• 100 base-T Ethernet port
