D-MBR 3707-3708 PS NFPA CLASS A SIGNAL BOOSTER
PRODUCT DESCRIPTION AND USER’S MANUAL
Cobham Wireless
–
Coverage
Date: 17-Jan-16
www.cobham.com/wireless
Doc. No.00060CDUM
Rev. 1.1
Page | 3
1.4 Smart-ALC Function
The Signal Booster’s power amplifier includes power-monitoring circuits with Automatic Level Control
(ALC) that prevents excessive output power while maintaining the power amplifier linearity
The Smart Automatic Level Control (Smart-ALC) is an innovative algorithm for automatic Signal
Booster gain adjustment. Combined with advanced control algorithms, SALC is capable of learning
the traffic load characteristics and adjusting the Signal Booster RF Gain to the desired value.
Note: To reset the Signal Booster to its highest set gain value, disconnect the Signal Booster power
cable for several seconds and re-connect.
1.5 Power Feeder and Battery Charger
NOTE: The Power Feeder and Battery Charger is described in Chapter -
4).
For installations where UPS is not available, the AC Feeder and Battery Charger unit can be
purchased (see section
4.1 for ordering information).
The charger is connected directly to the AC inlet and includes a circuit to charge external batteries
(meeting the specifications described in section
4.4.6. The charger also includes the following dry
contact alarms (as defined in the NFPA standard): AC failure, Charger failure and Low battery.
NOTE: BATTERY LOW indication is when battery reaches 70% at current consumption of ~ C/25
Figure 1-2. D-MBR Charger
