INSTALLATION GUIDE FOR RA-7800
RA-7800 QI
Copyright - refer to title page
Page 40
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3.4.2 RU CONNECTORS
Connectors on the RU are identified below:
EXT_ALM
RS-232
80-135V~50Hz/60Hz
WCDMA
DCS
OP/Downlink
OP/Uplink
Fig 27: RU connectors
OP/Downlink
OP/Uplink
Optical connector, when WDM is in use, this connected with the OP
Downlink and OP Uplink in the MU. When WDM is in use, this will function
as “OP/DL_UL”.
RS-232
5-pin CPC connector is the communication port for connection to PC for
local commissioning.
EXT_ALM
7-pin CPC connector for connection to the external facilities
DCS
RF connector for connection to service antenna for GSM1800 signal s
transimission.
WCDMA
RF connector for connection to service antenna for WCDMA2100 signal s
transimission.
80~135V
50Hz/60Hz
A pre-installed power cord provided for connection to AC or DC power
supply. (e.g. 220V, 110V)
Table 16: RU connector list
*Note: Depending on the type of PSU installed, the power cable grand is identified as “AC 110V”, DC
-48V”, or “DC +24V”.
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.
