User's Manual

MA 2000 System Elements
BTS/BDA Side Elements
MA 2000 Installation and Configuration Guide 11
RIU Chassis Front Panel
The RIU front panel contains the indicators for each of the sub-modules (BTSC/BDAC) installed
in the device and for the power supply. In addition, the front panel contains Expansion
connectors for interface to additional BUs (if interface to more than four 8-port BUs is required).
Figure 2-2. RIU Front Panel
Table 2-1. RIU Front Panel Indicators
LED Description
P.S UNIT PWR ON – input power is at the required level.
BTS CONDITIONER RUN Flashing -- CPU is running and software loaded
BTS CONDITIONER DL
OVERLOAD
Continuous Red – RF output towards BUs is disconnected to protect the
system. This may be due to:
o Unpredicted power rise for which the attenuation response was
insufficient to compensate and reduce the power to the required level.
o Software problem detected.
Flashing: When the BTSC DL output power exceeds the calibrated value.
BTS CONDITIONER DL
LOW
Continuous Red – if the RF outputs towards the BU is lower than the calibrated
value. This condition also triggers an event.
Power Supply
BTS/BDA Conditioners
Expansion connectors - for
connecting additional BUs