Stanford Research Systems RGA100, Operating Manual And Programming Reference

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1-8 Installation
SRS Residual Gas Analyzer
chapter to identify the probe electrode that is causing the short. If the short is in the
repeller, remove the probe from the vacuum system and correct the alignment of the
outer repeller cage before reattaching the flanges (Correct alignment is best assured
when the two small holes on the side of the repeller cage line up with the filament
screws). If the vacuum port is severely misaligned, and the short cannot be
eliminated, consider replacing the vacuum port, using a different port or operating the
RGA without the repeller (See Hardware Modifications in the RGA Quadrupole
Probe chapter for instructions on operating without a repeller cage.)
Electronics Control Unit Installation
The Electronics Control Unit (ECU) attaches directly to the probe’’s feedthru-flange. Its
correct alignment to the probe is very important during installation. Carefully follow the
instructions below to insure proper alignment.
Warning:
Failure to follow the installation instructions below could result in damage to the
ceramic feedthru connectors of the probe’’s flange, and would require sending the
entire unit back to Stanford Research Systems for a complete flange replacement.
Hardware Requirements
1. External Power source:
Standard ECU boxes require an external 24 +/- 2V DC power supply @ 2.5 Amps
(i.e. 60 Watt) to power its electronics.
Units with the optional built-in power module (Option 02) plug directly into a wall
AC outlet and require no extra power sources.