User's Manual

AXELL 3307D REPEATER
PRODUCT DESCRIPTION AND USER’S MANUAL
© Axell Wireless Ltd 3
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The Smart Automatic Level Control (Smart-ALC) is an innovative algorithm for automatic repeater
gain adjustment. Combined with advanced control algorithms, SALC is capable of learning the traffic
load characteristics and adjusting the Repeater RF Gain to the desired value. Smart ALC eliminates
the need to perform initial settings for maximal traffic load conditions and on-site gain adjustments.
Smart-ALC maintains the Uplink/Downlink gain balance for system transparency. In addition, Smart-
ALC prevents oscillations that may occur due to insufficient isolation while maintaining the gain in a
linear range operation by adjusting the repeater paths’ gain accordingly.
IMOP (Isolation Measurement and Oscillation Prevention) algorithm effectively reduces oscillation
problems. The repeater’s power amplifier includes power-monitoring circuits with Automatic Level
Control (ALC) that prevents excessive output power while maintaining the power amplifier linearity.
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The repeater’s interfaces are located on the front panel. These include Ethernet port, Mobile and
Base antenna connections, Alarm I/O, LED indicators, and power connection.
Figure 2. Axell 3307D Front Panel Interfaces
The following table provides a description of the front panel ports and connections.
Port Description
Base Connection to Base side (donor) antenna
Mobile Connection to mobile side antenna
Ethernet Connection to Ethernet network
Alarms Two external alarms and one dry-contact relay. See section 3.11 .
DC Power
Input via externally mounted AC to DC converter that is
connection to an AC outlet.
GND Grounding lug
Front panel indicators. For detailed troubleshooting procedures, refer to section 6.3
LED Description
DL N/A
Power
Service status LED: one per service.
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Base side antenna
connections
Status
Alarms
GND