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