318 Keysight NFA Series Noise Figure Analyzers Service Guide
Front Panel/Motherboard Troubleshooting
A8 Motherboard Description
A8 Motherboard Description
Purpose
The Motherboard is an electrical link between many of the electrical
assemblies in the instrument. The main functions of this PC board include:
— Distribute power
— Control and common signals between all the measurement PC boards
including the A7 Midplane and the Front Panel Assembly
— Circuitry for fan speed control
— 10 MHz Reference distribution
Figure 11-1 Motherboard
The Motherboard is a horizontally mounted, located near the bottom of the
analyzer. The Motherboard has the following connector types:
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