Harris Micromax FM Exciter System Overview REV1 01/12/2007
1-1
WARNING: Disconnect primary power prior to servicing
SECTION 1
System Overview
1.1 Introduction
This section contains system overview information and covers the following topics:
• Equipment Function (1.2)
• Physical Description (1.3)
• System Front and Rear Views (1.4)
• Simplified Block Diagrams (1.5)
• List of Subsystems (1.6)
• Technical and Mechanical Specifications (Tables 1.1)
1.2 Equipment function
The Harris Micromax is a 30 Watt FM exciter designed to operate in the 88-108 MHz range in 10
kHz steps. The RF power is adjustable continuously from 0-100% of rated power. It is designed to handle
MPX (composite), mono and left/right audio inputs with the built-in stereo generator. The internal stereo
generator can be turned on or off in the field.
In addition, an optional AES/EBU module is available for digital audio input capability.
In keeping with the design philosophy of modularity and maintainability, Micromax uses easily removable
and serviceable subsystems. List of subsystems is outlined in section 1.6.
1.3 Physical description
Micromax is electrically and mechanically modular in design. The entire system is contained in a 19”
rack that is 1.75” high. All subsystems are assembled with removable connectors to allow for easy servicing
and replacement.
The front panel contains an LCD display for metering and control, a menu navigation and selection
knob, on/off switch and status LEDs.
Rear panel contains AC input block, RF connectors, audio connectors, remote control and monitoring
connectors.
See Figure 1-1 for front and rear views of the Micromax FM exciter.
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