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TABLE OF CONTENTS
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Model 7220
1
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FCC Notice
2
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Declaration of Conformity
2
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Table of Contents
3
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TABLE OF CONTENTS
4
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Appendix A, Specifications
6
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Introduction
9
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Chapter 1, INTRODUCTION
10
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Installation &
13
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Initial Checks
13
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2.2 Initial Checks
15
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Technical Description
17
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3.2.02 Signal-Channel Inputs
18
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3.2.04 AC Gain
20
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3.2.05 Anti-Aliasing Filter
20
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3.2.07 Reference Channel DSP
22
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3.2.08 Internal Oscillator
23
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3.2.09 Demodulator DSP
23
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3.3 Accuracy
24
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3.5 Dynamic Reserve
25
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3.8 Output Channel Filters
27
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3.10 Noise Measurements
30
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3.11 Power-up Defaults
30
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3.12 Auto Functions
30
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3.12.02 Auto-Sensitivity
31
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3.12.03 Auto-Phase
31
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3.12.04 Auto-Offset
31
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3.12.05 Auto-Measure
32
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3.12.06 Default Setting
32
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Front and Rear Panels
33
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4.1.03 REF IN Connector
34
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4.1.05 MENU Key
36
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4.1.06 90º Key
37
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4.1.07 SET Key
37
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4.2 Rear Panel
38
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4.2.11 CH1, CH2 Connectors
40
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4.2.12 TRIG Connector
40
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4.2.13 ADC1, ADC2 Connectors
40
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4.2.14 DAC1, DAC2 Connectors
40
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Front Panel Operation
41
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5.2.01 Input Setup Menu
42
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5.2.02 Reference Setup Menu
44
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5.2.03 Output Setup Menu
45
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5.2.04 Control Options Menu
48
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AUTOMATIC
49
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EXTERNAL
50
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Contrast
50
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5.2.06 RS232 Setup 1 Menu
51
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5.2.07 RS232 Setup 2 Menu
52
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5.2.08 RS232 Setup 3 Menu
53
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5.2.09 GPIB Setup 1 Menu
54
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5.2.10 GPIB Setup 2 Menu
55
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5.2.12 Control Setup Menu
57
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5.3 Auto Functions Menu
58
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AUTO OFFSET
59
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AUTO MEASURE
59
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Figure 5-18, AC Gain Control
62
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Figure 5-37, Ratio Output
72
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Figure 5-38, Log Ratio Output
72
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ADC1 Volts
73
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ADC2 Volts
73
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Computer Operation
77
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6.3 RS232 and GPIB Operation
78
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6.3.03 Choice of Baud Rate
79
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6.3.08 Handshaking and Echoes
81
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6.3.09 Terminators
82
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6.3.10 Command Format
82
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6.3.11 Delimiters
83
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6.3.12 Compound Commands
83
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6.3.14 Service Requests
85
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6.4 Command Descriptions
86
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6.4.02 Reference Channel
89
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6.4.05 Instrument Outputs
92
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6.4.06 Internal Oscillator
95
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6.4.07 Auxiliary Outputs
96
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6.4.08 Auxiliary Inputs
97
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Chapter 6, COMPUTER OPERATION
100
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6.5 Programming Examples
106
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6.5.05 Transient Recorder
108
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Storage and Frequency Sweep
109
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Specifications
111
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Reference Channel
112
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Oscillator
113
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Auxiliary Inputs
114
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Data Storage
115
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Interfaces
115
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Power Requirements
115
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Appendix A, SPECIFICATIONS
116
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B.1 RS232 Connector Pinout
117
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Appendix B, PINOUTS
118
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Demonstration
119
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Programs
119
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Cable Diagrams
123
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Appendix D, CABLE DIAGRAMS
124
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Alphabetical Listing of
125
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Commands
125
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16,000,000
126
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((25 × n) + 157)
126
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((25 × n) + 1031)
126
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The value of n
144
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1 Enables offset facility
144
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Default Settings
147
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Appendix F, DEFAULT SETTINGS
148
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Operating environment 2-1
151
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X[.] command 6-16, E-20
153
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Y[.] command 6-16, E-20
153
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WARRANTY
155
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