3 minimizing noise pickup from external cabling – INFICON Composer Gas Concentration Controller User Manual
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Composer Operating Manual
1.10.3.3 Minimizing Noise Pickup from External Cabling
When an instrument is fully integrated into a deposition system, there are many
wire connections; each a potential path for noise to be conducted to the inside.
The likelihood of these wires causing a problem can be greatly diminished by
using the following guidelines:
Use shielded coax cable or twisted pairs for all connections.
Minimize cable lengths by centralizing the controller.
Avoid routing cables near areas that have the potential to generate high
levels of electrical interference. For example, large power supplies can be
a source of large and rapidly changing electromagnetic fields. Placing
cables as little as one foot (30 cm) from these problem areas can be a very
significant improvement.
Be sure that a good ground system and straps are in place as
recommended above.
Ensure that all instrument covers and option panels are in place and tightly
secured with the provided fasteners.
1.10.3.4 Communications Connection and Software Installation
The optional Monitor software currently supports RS-232C communication only.
See
for information concerning RS-232C communications and
for information on the Setup Tool and other software options
installation.