A
XELL
BSF-4004
BSF0038
S
ERIES
R
EPEATER
PRODUCT DESCRIPTION AND USER’S MANUAL
1.2 ALC
The repeater is equipped with an ALC, Automatic Level Control. The ALC feature enables
maintaining the maximum defined output level.
The repeater has a defined maximum output level. If the input signal amplified by the gain set
exceeds the set output limit, an ALC (Automatic Level Control) loop is activated. This ALC ensures
that the amplifier does not add distortion to the radio signal. Below are examples of the ALC function
for one and two carriers.
1.3 Operating Temperature
The BSF-4004 is designed primarily for multi carrier purposes. If the repeater is run at full output
power over a long period of time, the convection cooling may not be enough. The repeater is
equipped with a power management function that steps down the power and, if needed, fully shuts
down the amplifier chains until temperature reaches normal values. In situations where a repeater will
be run in such a manner extra cooling can be provided by putting the repeater in a temperature
controlled environment or via external fans.
+20
Input Signal, dBm
Output Power Level, dBm
Gain 70dB
-50
ALC
ALC one carrier
Input signal, dBm
Output power, dBm
+36,5
+33,8
-24
-16
Gain: 60 dB
+35
ALC two carriers
© Axell Wireless Ltd
Doc. No. PN 4004 BSF0038 Series-UM Rev. 1.0
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