FUNCTIONAL OPERATION ROI-S04605
2-4
4 pages
The setting of the radio frequency and TX output power are performed
from the IDU using personal computer. The TX output power can be
controlled by a control command signal (T PWR CTRL) from the IDU.
To communicate with the opposite station or with the IDU using
orderwire, an optional OW/RX LEV monitor unit is necessary, the HEAD
SET jack is provided on the OW/RX LEV Monitor. Therefore, connect the
OW/RX LEV Monitor to the RX LEV MON jack on the ODU.
Note: (*) 1 or 2 for channel No. in 1+1 system.
Table 2-1 Alarm Indication and Reporting
INITIATING
MODULE
ALARM CONDITION
ALARM
INITIATED
RF CKT
IF input signal from IDU lost IF INPUT ALM (*)
Transmit RF power decreases 3 dB
from nominal
TX PWR ALM (*)
APC loop of TX local oscillator or
first local oscillator for RX unlocks
APC 1 ALM (*)
APC loop of second local oscillator
for RX unlocks
APC 2 ALM (*)
Receiver input level decreases by
preset value from squelch level
RX LEV ALM (*)
Communication between IDU and
ODU is lost
OPERATION ALM (*)
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