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P
M
RODUCT
ANUAL
•
Mechanism for tunable rejection of interference from adjacent cellular and paging
frequencies
•
SmartALC™ technology
•
Prevents oscillations and balances coverage
•
Automatically sets optimum gain
•
Ensures transparent network operation
•
Software setup of bandpass filter
•
Remote Web access monitoring and control – option for Wireless modem
•
Built-in power measurement and RSSI indication
1.2 M
ANAGEMENT
You can connect to the Repeater using either:
•
Local connection to the Ethernet port using a
•
Wireless remote connection – using an external modem connected to the Ethernet
port using a
1.3 S
-ALC F
MART
1.3.1
SALC Function
The iDEN midi-repeater includes the Smart Automatic Level Control (ALC) function on
both the Uplink and Downlink power amplifiers to prevent output power from exceeding
maximum allowed output power.
The amplifier includes a directional coupler and a detector that monitor the output
power. The ALC mechanism samples the output power, and decouples and rectifies it.
The ALC mechanism sends a feedback signal to a voltage variable attenuator (VVA)
that, whenever a high input signal is received, attenuates the signal level so that the
output power of the amplifier does not exceed the preset limit.
1.3.2
SALC Description
The Smart Automatic Level Control (Smart-ALC) is an innovative solution for automatic
repeater gain adjustment. Combined with advanced control algorithms, SALC can
perform gradual learning of traffic load characteristics and adjust the Repeater RF Gain
to an optimal value.
Some of the SALC advantages are:
•
Network friendly: The SALC periodically learns traffic conditions and set the gain
so that at maximal traffic the repeater output is at maximal value. In all other cases
the gain is constant and the output power follows the BTS fluctuations. This feature
introduces system transparency – the mobile using the repeater is not affected by
repeater existence. Repeaters that blindly amplify the pilot code (minimal
transmission) of a certain base station to maximum output power might generate
network problems (they unnecessarily increase the noise in a certain cell). By
keeping the same gain for full traffic as well as for pilot only transmissions
situations, the Dekolink SALC feature minimizes this effect.
•
No adjustments are required: When installing the repeater, the standard
procedure for the technician is to tune the repeater to the desired isolation and gain
values. With SALC, the tuning procedure is accomplished automatically, thus saving
Page 8
C
R
OMPACT
EPEATER
C
ONNECTIONS
cross-cable
(modem is purchased separately)
UNCTION
Proprietary Data
D
3108S
D
EKO
EKOLINK
cross-cable
W
L
.
IRELESS
TD
P/N 300XC10031 Rev. B
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Table of Contents
Troubleshooting
