Equipment Connection; Grounding Connection; Mu Connection; Mu Connects With Bts - Comba Telecom RA-7E00 User Manual

3.5

EQUIPMENT CONNECTION

3.5.1 GROUNDING CONNECTION

Ground connection
To ensure safe operation of the product, a ground (earth) connection is required. For single phase AC
power source, the product must be grounded by connecting the "earth wire" of the power cord to the
ground terminal of the AC supply. For operating this product with DC power system (such as rectifiers),
the product should not be connected to power systems that switch open the return lead because the
return lead could function as the ground (earth) connection for the equipment.
Protective Ground Connection
The enclosure must be grounded securely by connecting a copper wire (CSA 16mm
terminal on the equipment/rack, and the other end to a protective ground (i.e. building earth point). An
internationally acceptable colour code of the ground connection wire is green/yellow.
Such a ground connection implements the "Protective Ground Connection", and must be connected to the
equipment at the designated ground point. In general, do not connect the supply before establishing an
adequate ground (earth) connection.
RA-7E00 Grounding Connection
The equipment must be grounded securely. Connect a copper wire to the grounding terminal on the
mounting tab/enclosure, and connect the other end to a protective ground (i.e. building earth point). An
internationally acceptable coloring code of the ground connection wire is green/yellow.

3.5.2 MU CONNECTION

3.5.2.1. MU connects with BTS

Connect MU with BTS by suitable RF jumper cables as shown in the following figure.
800 BTS 1900 BTS
Note:

MU RF interface is duplex; connect an extra combiner between BTS and MU if the BTS signal is
TX/RX seperately

RF connectors are SMA-F type; use SMA-M for connection.
ENU STATUS : 1-0-1
USER MANUAL FOR RA-7E00 III3
Comba
MODEM
PWR RUN ALM
OP_A OP_A OP_A
OP_A
OP_A OP_A OP_A OP_A
Figure 23: MU connect with BTS
Copyright - refer to title page
BTS_ALM
LAN
1900MHz
2
) to the grounding
800MHz
Page 29