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Cygnus 2 Operating Manual
2.1.3 Cygnus 2 Installation
Cygnus 2 is designed to be rack mounted. It may be also used on a table. Cygnus
2 is forced-air cooled, with the air flow exiting the rear of Cygnus 2 for clean room
convenience.
It is generally advisable to centrally locate Cygnus 2, minimizing the length of
external cabling. The cable from the instrument to the XIU is typically fifteen feet.
Thirty, fifty and one hundred foot cables are available.
2.2 Avoiding Electrical Interference
Careful consideration of simple electrical guidelines during installation will avoid
many problems caused by electrical noise.
To maintain the required shielding and internal grounding and ensure safe and
proper operation, Cygnus 2 must be operated with all enclosure covers, sub-panels
and braces in place and fully secured with the screws and fasteners provided.
When using Cygnus 2 with an RF sputtering system, the
cable between Cygnus 2 and oscillator should be kept as
far away from the RF transmission cable as possible.
Interference from the RF transmission cable may cause
an erroneous crystal fail.
2.2.1 Verifying/Establishing Earth Ground
If a ground must be established, the following procedure is recommended:
Where soil conditions allow, drive two ten foot copper clad steel rods into the
ground six feet apart. Pour a copper sulfate or a salt solution around each rod
to improve the ground’s conduction. A near zero resistance measurement
indicates earth ground is achieved.
Keep connections to this grounding network as short as possible.
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