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WARNING: Disconnect primary power prior to servicing
Harris Micromax FM Exciter System Overview REV1 01/12/2007
1.4 Electrical description
Micromax is a self contained broadband FM exciter. The frequency of operation and RF power level
are selectable from the front panel. A microprocessor controller monitors all operating parameters and
automatically lowers RF output in case of high VSWR or temperature.
Unit is powered by a high efficiency, universal AC input (80-260VAC) switching power supply. The
RF output module is totally broadband across the FM band and is capable of delivering RF output power of
up to 30 Watts.
Technical specifications of the Micromax is shown in Table 1-1.
1.5 Simplified block diagrams
Micromax is composed of modular subsystems that are easily removable and serviceable.
A simplified block diagram of how all the subsystems are interconnected is shown in Figure 1-3.
Location of subsystems is shown in Figure 1-4.
1.6 List of subsystems
Micromax is composed of the following subsystems:
1. Power supply
2. Main card
3. Controller card
4. RF Power amplifier
5. AES/EBU card (optional)
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