Motorola DIMETRA MTS 2, Installation, Configuration And Basic Service Manual

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MTS 2 and MTS 4 Installation, Con
fi
guration and Basic Service Manual Surge Arrestors
Surge Arrestors
Please refer to "Surge Arrestors and Suppliers" in Appendix A, "Field Replaceable
Units (FRUs)" for more information.
Lightning arrestors should be installed to transport lightning strikes away from the equipment.
Install a lightning rod on a tower leg other than the leg to which you mount the antenna.
Power Panel
Motorola recommends that all sites where an MTS will be installed use a standardized power panel
including circuit breaker layout. Vacant space should be left to allow for future requirements.
User Alarms, Control Outputs, and Door Alarm
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■
■
The MTS in all con
fi
gurations has the following alarm inputs and control outputs:
•
15 x 12 V opto-isolated alarm inputs - available on the junction panel
◦ Alarm inputs and Alarm ground are
fl
oating
•
2 x Form A relay outputs with Common and Normally Open contacts -
available on the junction panel
•
DOOR alarm - connected to the Site Controller
All 15 alarm inputs and Door alarm are using the same Alarm Ground. All these alarms
and controls are connected directly to the Site Controller (SC).
The Expansion Cabinet only offers the Door alarm feature.
For detailed information refer to
"External Alarm Cabling" in Chapter 4, "Hardware
Installation" and "User Alarms/Controls, X.21, RGPS, and GPS Cabling" in
Chapter 5, "Interconnection and Internal Cabling" .
.
See Figure 3-7 for more detailed description of User Alarms input structure.
6802800U74-N September 2009
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