Nautel VS1, Troubleshooting Manual

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VS1 Troubleshooting Manual Detailed Circuit Descriptions
Issue 10.0 2018-10-29 Page 2-1
Section 2: Detailed Circuit Descriptions
Refer to the functional block diagram: “
Block Diagram - VS1 Transmitter ” on page 1-7
and high
level descriptions of the VS1 Operation and Maintenance Manual .
This section provides a detailed description of the transmitter’s key modules and assemblies,
including:
• Exciter/control PWB (NAPE87B) - see page 2-1
• PS distribution PWB (NAPS41A) - see page 2-2
• Pre-amp/IPA PWB (NAPA28B) - see page 2-3
• Power amplifier PWB (NAPA23/03A) - see page 2-4
VS1 electrical schematics
The descriptions in this section all refer to the VS1 electrical schematics listed in Table 5.1 on page 5-
4 of the VS1 Troubleshooting Manual .
Exciter/control PWB (NAPE87B)
Detailed theory for the exciter/control PWB (A1) is not included in this manual.