Nautel NX15, Operation And Maintenance Manual

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NX15/NX25 Operations and Maintenance Manual Description
Issue 6.0 2019-01-31 Page 1-1
Section 1: Description
This section provides a high-level description of the transmitter’s key sections. The transmitter
circuitry is subdivided into five basic stages.
• Ac-Dc Power Stage
• Exciter Stage - see page 1-4
• Control/Monitor Stage - see page 1-7
• RF Power Stage - see page 1-8
• RF Output Network - see page 1-9 (includes combiner and filter)
Refer to the functional block diagram: see Figure 1.6 on page 1-15 .
NX15/NX25 Electrical Schematics
Some descriptions in this section refer to electrical schematics (SD-#s). These are located at the
end of the NX15/NX25 Troubleshooting Manual .
Redundancy
The NX15/NX25 features redundancy in all key systems:
• RF power modules
• Exciters
• Cooling fans
• Low voltage power supplies