Keysight Technologies X Series Service Manual page 353

Exa signal analyzer, 9 khz - 3.6/7/13.6/26.5/32/44 ghz

Hide thumbs Also See for X Series:

Table of Contents

Power Supply/Midplane Troubleshooting

A7 Midplane Description

Power Supply Dithering

A triangle wave of approximately 100 Hz is generated and goes directly to the

A6 Power Supply assembly. This is used to frequency modulate the power

supply switching frequency for the purpose of lowering any power supply

related interference. If for some reason the level of the power supply related

interference is higher than normal this circuitry, or the A6 Power Supply

assembly, could be suspect.

Miscellaneous Circuitry

Other circuitry on the A7 Midplane include a circuit to phase lock the CPU

clock to the analyzer's 10 MHz reference and a Complex Programmable Logic

Device (CPLD) used as an Instrument Local Bus (ILB) buffer to A16 Reference

Assembly connector at J21.

Keysight N9010A EXA Service Guide

Troubleshooting