Installation Guide

Table Of Contents
TETRA MBS UNIT. INSTALLATION GUIDE
F067646PT_2801
Page 16 of 62
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5.2 CONNECTORS
1.- Terminal with the following meaning depending on the MBS Unit Power option:
- AC MBS Units: Neutral contact (N).
- DC MBS Units: Negative contact (-).
2.- Terminal with the following meaning depending on the MBS Unit Power option:
- AC MBS Units: Line contact (L).
- DC MBS Units: Positive contact (+).
3.- Power supply Earth contact.
4.- Pressure equalizer.
5.- Chassis Earth contact.
ETH: Connector that allows Ethernet connection between MBS Units. It also can be used as
Maintenance Ethernet connector.
PoE/ETH: Power Over Ethernet (IEEE 802.3af) connector. It provides power supply (48 VDC) and
Ethernet connection to a PoE radio link. It can be used as Maintenance Ethernet connector if there is
not radio link (Poe) connected. If the MBS Unit has the SNI IP option this connector is Layer 3.
PoE: Power Over Ethernet (IEEE 802.3af) connector. It provides power supply (48 VDC) and
Ethernet connection to a PoE radio link. If the MBS Unit has the SNI IP option this connector is Layer
3.
SYNC OUT: Synchronism output connector. It provides synchronism to a second MBS Unit through
its SYNC_IN connector.
SYNC IN: Synchronism input connector.
DIV OUT: Output reception connector. It provides the receiver chain 2 to the next MBS Unit through
its DIV IN connector.
DIV IN: Reception antenna connector (receiver chain 2). It is connected to an antenna or to a MBS
Unit DIV OUT connector (diversity 2).
ANT: Transmission/reception antenna power connector (receiver chain 1).
POWER OUT: Output power supply connector. It provides power supply to another MBS Unit with
the same Power Supply option.
POWER IN: Input power supply connector (VAC or VDC).