Agilent Technologies 35670-90066 manual Adjusting the Analyzer, Adjustment Assembly Component

Adjusting the Analyzer

This chapter contains the adjustment procedures for the Agilent 35670A Dynamic Signal Analyzer. Use these adjustments if the analyzer does not meet its specifications or if instructed in chapter 4, ‘’Troubleshooting the Analyzer,’’ or chapter 6, ‘’Replacing Assemblies,’’ to perform these adjustments. These adjustments are not required for routine maintenance.

Allow the Agilent 35670A analyzer to warm up for an hour before doing any of the adjustments.

During many of these adjustment procedures, an adjustment message appears on the screen. The instructions on the screen are not as complete as the instructions in this guide. When an adjustment message appears on the screen, continue to follow the instructions in this guide. Failure to follow the instructions in this guide may result in an incorrect adjustment, which would appear as a hardware failure.

The following table shows the assembly and components adjusted during each adjustment procedure.

Adjustment	Assembly	Component
Frequency reference	A7 CPU	A7 C85
Source	A5 Analog	A5 R48
		A5 R59
ADC gain, offset and	A5 Analog	A5 R407
reference		A5 R405
		A5 R431
Input dc offset	A1/A2 Input	A1/A2 R39
		A1/A2 R539
Common mode rejection	A1/A2 Input	A1/A2 R43
		A1/A2 R543
Filter flatness	A1/A2 Input	A1/A2 R115
		A1/A2 R235
		A1/A2 R615
Display voltage	A102 DC-DC Converter	A102 R25

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