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33120A
Agilent Technologies 33120A Service Guide
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33120-66521 (sheet 1 of 10)
Floating Lo
gic Schem
atic
131
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19 inches
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Binder
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132
134
Table of Contents
Default Chapter
11
Table of Contents
11
Chapter 1 Specifications
21
Chapter 2 Quick Start
21
To Prepare the Function Generator for Use
23
If the Function Generator Does Not Turn on
24
To Adjust the Carrying Handle
26
To Set the Output Frequency
27
To Set the Output Amplitude
28
To Set a DC Offset Voltage
29
To Set the Duty Cycle
30
To Output a Stored Arbitrary Waveform
31
To Output a DC Voltage
32
To Store the Instrument State
33
To Rack Mount the Function Generator
35
Chapter 3 Front-Panel Menu Operation
37
Front-Panel Menu Reference
39
A Front-Panel Menu Tutorial
41
To Select the Output Termination
46
To Output a Modulated Waveform
47
To Unsecure the Function Generator for Calibration
49
Chapter 4 Calibration Procedures
51
Agilent Calibration Services
53
Calibration Interval
53
Time Required for Calibration
53
Automating Calibration Procedures
54
Recommended Test Equipment
54
Test Considerations
55
Performance Verification Tests
56
Frequency Verification
58
Function Gain and Linearity Verification
58
DC Function Offset Verification
59
AC Amplitude Verification
59
Amplitude Flatness Verification
62
AM Modulation Depth Verification
63
Optional Performance Verification Tests
64
Chapter 4 Calibration Procedures (Continued)
64
Calibration Security Code
66
Calibration Count
68
Calibration Message
68
General Calibration/Adjustment Procedure
69
Aborting a Calibration in Progress
71
Frequency and Burst Rate Adjustment
71
Function Gain and Linearity Adjustment
72
AC Amplitude Adjustment (High-Z)
72
Modulation Adjustment
74
AC Amplitude Adjustment (50 W )
76
DC Output Adjustment
78
Duty Cycle Adjustment
79
AC Amplitude Flatness Adjustment
79
Output Amplifier Adjustment (Optional)
82
Error Messages
83
Chapter 5 Theory of Operation
85
Block Diagram Overview
87
Output Attenuator
88
Output Amplifier
89
AM Modulation
91
Pre-Attenuator
92
Square Wave and Sync
92
Filters
94
Waveform Dac/Amplitude Leveling/Waveform RAM
95
Direct Digital Synthesis (DDS ASIC)
97
System Dacs
98
Floating Logic
99
Earth-Referenced Logic
100
Power Supplies
100
Display and Keyboard
102
Chapter 6 Service
103
Operating Checklist
105
Types of Service Available
106
Repackaging for Shipment
107
Cleaning
107
Electrostatic Discharge (ESD) Precautions
108
Surface Mount Repair
108
To Replace the Power-Line Fuse
109
To Replace the Output Protection Fuse (F801)
109
Troubleshooting Hints
110
Self-Test Procedures
112
Chapter 7 Replaceable Parts
115
Replaceable Parts
115
Chapter 8 Schematics
129
33120A Block Diagram
131
Mechanical Disassembly
132
Floating Logic Schematic
133
Digital Waveform Data Synthesis
134
System DAC Schematic
135
Waveform DAC Schematic
136
Filters Schematic
137
Sync, Square Wave, and Attenuator Schematic
138
Output Amplifier Schematic
139
Output Attenuator Schematic
140
Earth Reference Logic Schematic
141
Power Supplies Schematic
142
Display and Keyboard Schematic
143
33120-66521 Component Locator Diagram
144
33120-66502 Component Locator Diagram
145
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Quick Guide
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Installation Instructions
6 pages
4
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Agilent Technologies 33120A Specifications
General
Brand
Agilent Technologies
Model
33120A
Category
Inverter
Language
English
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