INSTALLATION GUIDE FOR RA-7800
RA-7800 QI
Copyright - refer to title page
Page 34
ENU Status : 1-0-1
The MOU is controlled and monitored with this unit. The operation
status and local connection to PC is available on this module. The
wireline modem is integrated within this unit. (standard application)
FSK
Green LED to indicate the communication status
(FSK Modem) between MOU and RRU. This
LED flashes every two seconds to indicate
normal communication status. “OFF” indicates an
alarm is generated.
ALARM
RED LED to indicate alarm condition of MOU.
‘OFF’ for normal operation, and ‘ON’ indicates
that an alarm is generated.
RUN
Green LED to indicate system operation status.
This LED flashes every one second to indicate
system self-check completed and system
commissioning can proceed.
RS-232
DB-9 connector for OMT PC connection to the
MOU using the supplied cable.
BTS-ALM
DB-9 connector for BTS alarm notification.
MCU with wireless
modem
MCU
FSK
ALARM
PUN
BTS-ALM
RS-232
Modem
Modem
SMA connector for wireless modem RF signal to
the “MODEM” port of the Main Unit.
Table 7: MCU SIU description
CBU
Performs to receive and combine the signals from GSM1800 and
WCDMA2100 BTS directly.
1800MHz
SMA connector, which connects to the GSM1800
BTS.
2100MHz
SMA connector, which connects to the
WCDMA2100 BTS.
Downlink
SMA connector, which is connected with
“Downlink” in the RFU for transmission of the RF
signal.
CBU
2100MHz
1800MHz
Uplink
Downlink
Uplink
SMA connector, which is connected with “Uplink” in
the RFU for transmission of the RF signal.
Table 8: CBU SIU description
