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Troubleshooting and Maintenance Guide
14
Electronics
MSD Side Board
The MSD side board is mounted on the side plate. It performs
these functions:
•
Provides the 1 MHz reference clock for the RF amplifier.
•
Generates the RF component of the voltage applied to the
quadrupole mass filter according to a signal from the main
board. The amplitude of this voltage is proportional to the
mass selected.
•
Generates the DC component of the voltage applied to the
quadrupole mass filter. The magnitude of this voltage is
proportional to the RF voltage.
•
Passes voltages generated on the main board and the
detector focus voltage from the HED power supply to
elements in the ion source and the detector.
•
Generates and adjusts filament emission current and
electron energy as controlled by the main board.
•
Switches the filament power from one filament to the other.
•
Monitors for RF faults and shuts down the analyzer if one is
detected.
Summary of Contents for 5975T LTM GC/MSD
Page 1: ...Agilent Technologies Agilent 5975T LTM GC MSD Troubleshooting and Maintenance Guide...
Page 10: ...10 Troubleshooting and Maintenance Guide...
Page 32: ...32 Troubleshooting and Maintenance Guide 2 Concepts and General Tasks...
Page 72: ...72 Troubleshooting and Maintenance Guide 3 Chromatographic Symptoms...
Page 86: ...86 Troubleshooting and Maintenance Guide 5 ALS Symptoms...
Page 98: ...98 Troubleshooting and Maintenance Guide 7 Instrument Power On and Communication Symptoms...
Page 108: ...108 Troubleshooting and Maintenance Guide 9 Troubleshooting Tasks...
Page 166: ...166 Troubleshooting and Maintenance Guide 10 General Maintenance...
Page 214: ...214 Troubleshooting and Maintenance Guide 13 Analyzer...