12/24/07
888-2685-001
1-5
WARNING: Disconnect primary power prior to servicing.
Section 1 Introduction
Ranger Commissioning Manual
1.4
Transmitter Control System
The transmitter uses a distributed architecture control system. This means that each transmitter
sub-system is responsible for its own monitoring and protection and simply reports back to the
Main Controller for display on the GUI (Graphical User Interface) or to a remote interface. The
heart of the system is the 376 Micro Module which is used in all of the transmitter systems for
control, monitoring and protection. The Micro Module is used on each of the following
controllers and sub-systems:
a.
Main Controller Board - This board is responsible for transmitter control and
monitoring. However, with the distributed control architecture, it is not directly
responsible for protection of the individual transmitter components. It merely
gathers all status and fault data from the individual sub-systems and reports that
information to the operator. The Main Controller is responsible for system level
control (issues which effect multiple systems) since it is the only part of the con-
trol system which can monitor the entire transmitter.
b.
RF Monitor Board - Responsible for cabinet VSWR protection and monitoring of
combiner reject loads. Reports directly to the Main Controller.
c.
Power Supply Monitor Board - Responsible for control and monitoring of the PA
power supply and distribution of the low voltage. Also responsible for monitoring
the cooling system including temperature and air pressure. Reports directly to the
Main Controller.
d.
External I/O Board - Provides all customer interface connections including paral-
lel remote control. Reports directly to the Main Controller.
e.
PA Module Controllers (1 in each module) - This is not actually a 376 micro
module but is a micro controller and is responsible for protection and control of
the PA Module. Reports directly to the Main Controller Board via the CAN bus.
1.4.1
Graphical User Interface
The front panel user interface is a 1/4 VGA, LCD touchscreen display. The touchscreen display is
used to monitor the transmitter. Hardware buttons for the primary transmitter functions such as
ON, OFF, RAISE and LOWER are provided on the overlay panel next to the display.
1.4.2
Control System Communications
The control system uses a serial communications system called a CAN bus. CAN stands for
Controller Area Network. The CAN bus is a closed loop serial network operated by the Main
Controller Board. Each circuit board and module connected to the CAN bus is considered a node
and therefore has a specific address. This allows the Main Controller to gather information from
all parts of the transmitter and display it on the GUI. One big advantage of the CAN bus is that it
Summary of Contents for Ranger Series
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