MobileAccess™ 1000/1200
Connections
UM-1000, Revision 2.2
15
3.2 Module Descriptions and Connections
3.2.1 Radio Interface Unit (RIU)
Each RIU can support up to three BTS Conditioner (BTSC) sub-modules, where
each sub-module provides interface to a BTS or BDA. The BTS or BDA service must
correspond to the type of BTSC to which it is connected.
Each RIU can be connected to
four
8-port Base Units (real panel connections) or
eight
4-port Base Units.
The RIU can be expanded to support additional BU by
using splitters and combiners connected to the front panel connectors.
Note:
All connections are via RG223 coax cables with 1/2" N-type male connectors
3.2.1.1 RIU Front Panel
The RIU front panel contains all the indicators and LEDs. The wiring connections on
the front panel are used to combine the RF signals into a single signal that is applied
to all BUs.
Figure
3-2. RIU Front Panel
Table
3-1. RIU Front Panel Indicators
LED Description
P
.
S UNIT
PWR
ON – input signal is at the required level.
BTS CONDITIONER
RUN
Flashing -- CPU is running and software loaded
BTS CONDITIONER
DL OVERLOAD
Continuous Red – RF switch is disconnected to protect
the system. This may be due to:
•
Unpredicted power rise for which the attenuation
response was insufficient to compensate and reduce
the power to the required level.
•
Software problem detected.
Flashing: When the BTSC DL output power is more than
3dB of the calibrated value.
BTS CONDITIONER
DL LOW
Continuous Red – if the BTSC DL power is at least 15dB
lower than the calibrated BTSC max power level. This
condition also triggers an event.
Power Supply
BTS Conditioners
8W Splitter
connection
8W Combiner
connection
Summary of Contents for 1000 System
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