4-2
888-2523-001
7/26/05
WARNING: Disconnect primary power prior to servicing.
Section 4 Theory of Operation
ATLAS Analogue
4.2
Block Diagram Descriptions
For a basic transmitter overview and block diagram descriptions refer to Section 1,
Introduction. There is an overall transmitter block diagram at the front of the schematic
package that came with the transmitter. Also, as part of our standard practice, the first
page of a PC board schematic is also a block diagram of that board. Table 4-1 gives the
basic Atlas model numbers and configurations.
4.3
Transmitter Control System
The Atlas Series transmitters utilize a very advanced but simple to use control system. It
is a microprocessor, serial communication based software control system but uses
backup Life Support logic circuitry and hard wired control lines, allowing the
transmitter to be on the air even if the main control system fails.
Figure 4-1 shows a simplified block diagram of the transmitter control system. The left
side of the diagram shows the external connections to the transmitter or more
specifically the External I/O Board. The right side of the diagram shows the internal
control system inter-connections from the Main Controller to the various sub-systems
inside the transmitter cabinet.
Table 4-1 Atlas Analogue Transmitter Models
Tx Models
Cabinets
PA Modules
Output Power
DVA2500
1
2
2500W
DVA5000
1
4
5000W
DVA10000
1
8
10kW
DVA20000
2
16
20kW
DVA30000
3
24
30kW
NOTE: All power levels given in peak sync power.
Summary of Contents for ATLAS ANALOGUE
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