Operation and Maintenance Manual

CANAM TECHNOLOGY, INC. (CTI)
MARK-IV VHF BROADBAND SIGNAL BOOSTER M4BBDAV O&M MANUAL
Page 11 of 39
Rev0 April/2015
Section D. THEORY OF OPERATION
D.1 DESCRIPTION
The MARK-IV VHF Broadband Signal Booster (M4BBDAV) is a stand-alone
Broadband bi-directional & multi-channel two-way radio signal suitable to
drive its internal high-power amplifiers that feed the service-side transmit
signals and/or a fiber-optic distribution.
The system houses multi-carrier linear broadband power amplifiers and
automatic level control. The amplifiers are designed with special linear
characteristics for continuous operation, 100% duty cycle 24 hours/7 days a
week. Its modular construction allows easy access to the amplifier modules
and power supply.
It has a maximum gain around 60 dB across the band. The output power
amplifier P1dB Compression point is around 20 Watts (+43 dBm). They also
have an automatic gain control range greater than 25 dB.
The amplifiers modules are bolted down onto a heat-sink base. These heat
sinks have adequate capacity to dissipate five times the maximum
anticipated heat being generated by the amplifiers. It is recommended the
temperature of the room be maintained below 80
0
F to assure the longest
possible life of the amplifier transistors. The power supply has +28 VDC module
for the amplifiers, equipped with over current and over voltage protection
among other features. It will immediately drop the supply voltage to prevent
damage to other components.
The unit’s operational parameters are stored in the non-volatile memory of
the embedded controller; this allows the booster to operate on a standalone
basis. The built-in Web Server provides a Graphical User Interface (GUI) to
ease in remote monitoring & control. Access is obtained via a PC’s Web
Browser and a TCP/IP connection to the Unit. The system can be connected
directly to a PC computer or can be plugged into the local area network.
Discrete Digital I/O alarms are available for external monitoring.