Spectrometer Header: Decomposition; Pre-Amp Board - Measurement Points - Agilent Technologies VS Series Operation Manual

VS Series Component Leak Detector
Preamplifier PCB
Extender
Repeller
Filament
Collimator
Figure C-2 Spectrometer Header: Decomposition
b. Ensure the total pressure plate is electrically isolated from ground and other points of
contact.
c. Ensure that the total pressure plate wire is securely fastened to total pressure plate
and feed through pin.
3. Pre-amp board failure (Figure C-2 and Figure C-3):
Figure C-3 Pre-Amp Board - Measurement Points
a. Measure on the pre-amp board the voltage present at the header pin labeled PRESS
(spectrometer pressure output).
b. Carefully remove the ion source power cable (warning high voltage present), if the
measured voltage is greater than 1.5 VDC.
Faraday
Plate
Ground
Plate
Supressor
Assembly
Header Flange
Defelector
Electronics
C-7