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MTS 2 and MTS 4 Installation, Configuration and Basic Service Manual
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Grounding Connection
Various cabling from the equipment cabinet to external equipment is made through the MTS Junction Panel
located at the top-rear of the equipment cabinet. The Junction Panel is accessed from the top of the cabinet.
Cabinet grounding wires may have been installed prior to the cabinet installation. If
so, follow the instructions below.
If grounding wires have not yet been installed, refer to
in
Chapter 3, "Site
Single-point ground method (where each cabinet is grounded to master ground using its own
ground wire) shall be used. The cabinet shall use green (or green-yellow) insulated wire with
a minimum size of 16 mm
The MTS is connected to the site ground through the M10 station ground point located on the
junction panel, see
for the protection of the equipment against lightning induced surges.
If the specified wire size is not available, use the next-larger available wire size. During the installation of
cabinet ground wires, ensure to check any factory-installed internal ground connections for tightness.
6802800U74-N September 2009
Site Link Cables
Alarm System Cables
Proper surge protection should be installed on E1/X.21 site links, all antennas and power
inputs to prevent potential damage to the MTS. For more information, please refer to
Arrestors and Suppliers"
For full instructions and guidelines, please refer always to Motorola Standards
and Guidelines for Communications Sites, R56.
Depending on system configuration, not all connector locations on Junction Panel are populated.
Preparation".
2
CSA (#2 AWG) for ground wire.
Figure 4-12
for MTS 2 and
Figure 4-12
and
Figure 4-13
There may be small differences in older configurations.
in
Appendix A, "Field Replaceable Units
"Grounding Requirements"
Figure 4-13
for MTS 4. This connection is essential
depicts the newer version of the MTS Junction Panel.
Grounding Connection
"Surge
(FRUs)".
4-17
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