Metasys Network Technical Manual 636
Network Communications Section
Technical Bulletin
Issue Date 1199
© 1999 Johnson Controls, Inc.
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Code No. LIT-636018 www.johnsoncontrols.com
lntroduction Page 3
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Application Details *3
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Theory of Operation *5
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Components *8
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Planning Considerations *10
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Design Considerations *11
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Maximizing Your System’s Efficiency 13
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Specifications *15
Installation Procedures 17
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Preliminary Information 17
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Sample Layouts 18
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Wiring--NCU/NEU to N2 Bus 24
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Wiring--ASCs to N2 Bus 27
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Installing the Repeater *27
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Installing the Fiber Modems 31
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Setting Terminations 33
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Installing the Surge Protector *36
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Setting the Channel Switch (NCM 101/102 Only) *48
Commissioning Procedures 49
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Overview 49
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Checking N2 Bus Installation 49
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Modifying N2 Bus Installation 49
N2 Communications Bus
*Indicates those sections where changes have occurred since the last printing.
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