Agilent Technologies N9340A Instrukcja Użytkownika Pobierz pdf (Strona 42)

3 Making Measurements

32 N9340A User’s Guide

5 Reduce the span to 1 MHz and if necessary

re- center the peak.

• Press [SPAN] > [1] > {MHz}.

6 Set the attenuation to 20 dB. Note that

increasing the attenuation moves the noise floor

closer to the signal level.

• Press [AMPTD] > {Attenuation} > 20 > {dB}.

Figure 7 A signal closer to the noise level (Atten: 20 dB)

7 Press [AMPTD] > Attenuation > 0 > {dB} to set the

attenuation to 0 dB.

Figure 8 A signal closer to the noise level (Atten: 0 dB)

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User’s Guide 1
2
Manual Part Number 3
Warranty 3
Technology Licenses 3
Restricted Rights Legend 3
CAU-CAUTION 4
Table of Contents 5
4 System Setting 6
5 Key Reference 6
7Error Messages 10
8 Menu Map 10
N9340A Overview 11
Introduction 12
Optimized Usability 13
Front Panel Overview 14
Top Panel Overview 15
Display Annotations 16
Step Notes 17
Charging a Battery 18
Getting Started 19
Power Requirements 21
AC Power Cords 22
Safety Considerations 23
Environmental Requirements 25
Electrical Requirements 25
Instrument Markings 26
Power on your N9340A 27
Preparation for Use 28
Entering Data 30
Viewing a Signal 31
Some helpful tips 32
Upgrading Firmware 33
Adding an option 33
Contact Agilent Technologies 34
Making Measurements 35
Measuring Multiple Signals 36
Accuracy" on page 36 37
Directional 38
Signal generator 38
Resolving Small Signals 40
Hidden by Large Signals 40
Measuring a Low-Level Signal 41
Increased Sweep Time 44
Trace Averaging 45
One-button Power Measurement 53
Measuring ACPR 54
Measuring Channel Power 55
Channel Bandwidth 56
Low-pass Filter 59
N9340A 61
Making Measurements 3 63
N9340A User’s Guide 53 63
Calibration Routine 64
System Setting 65
Visual and Audio Adjustment 66
Ext Input 68
Quick saving a setup 69
Quick recalling a setup 69
File Type 70
Saving Path 70
Saving a file 71
Viewing file list 72
Deleting a file 73
Loading a file 73
Show System 74
Show Error 75
Factory Default Settings 77
4System Setting 78
68 N9340A User’s Guide 78
Key Reference 79
Amplitude 80
Scale/DIV 81
Scale Type 81
Ref Offset 82
Y Axis Units 82
Avg Type 84
In non-zero spans: 86
In zero span: 86
In FFT Mode 87
Sweep Mode 87
Single Sweep 88
Frequency 91
Peak Search 95
• Freq Count 96
Marker Trace 97
Last Span 99
Clear Write 100
Max Hold 100
Minimum Hold 101
Detector 101
Save Trace 104
Recall Trace 104
Limit Line 105
Limit Pattern 105
Set Pattern 105
Limit Type 105
Save Pattern 106
Recall Pattern 106
SCPI Command Reference 107
SCPI Language Basics 108
Basic Knowledge Requirement 109
Command Categories 109
Command Syntax 109
Standard Notations 110
Default unit of parameters 111
Common Commands 112
CALCulate Subsystem 113
Control Limit line Buzzer 114
Control Limit Line Testing 114
Set Limit Line Y-axis value 114
Control Limit Pattern Testing 115
Define Limit Pattern Values 116
CALCulate:MARKer Subsection 117
Marker Function 118
Marker Mode 119
Marker On/Off 120
Marker to Trace 120
Marker readout: X Value 121
Marker readout: Y Value 121
DEMOdulation Subsystem 122
DISPlay Subsystem 123
Vertical Axis Scaling 125
Display Mode 125
Contrast 126
Brightness 126
INITiate Subsystem 127
Select One button measurement 128
MEASure Subsystem 129
Adjacent channel 130
Channel space 130
Main Channel Power 130
Low Adjacent Channel Power 130
Upper Adjacent Channel Power 130
Channel Power Subsection 132
SENSe Subsystem 133
Turn Averaging On/Off 134
Set the Average Count 134
[:SENSe]:BANDwidth Subsection 135
Video Bandwidth Automatic 136
[:SENSe]:DETector Subsection 137
FREQuency Subsection 138
Center Frequency Step Size 139
Frequency Span 139
Full Frequency Span 139
Zero Frequency Span 140
Last Frequency Span 140
Start Frequency 140
Stop Frequency 140
[:SENSe]:POWer Subsection 141
SWEep Subsection 142
SYSTem Subsystem 143
TRACe Subsystem 144
Tracking Generator Subsystem 145
Amplitude Step 146
Amplitude Offset 146
Storing as reference 147
Normalization 147
Normalization Reference Level 147
TRIGer Subsystem 149
Video Trigger Level Amplitude 150
UNIT Subsystem 151
6 SCPI Command Reference 152
142 N9340A User’s Guide 152
Error Messages 153
Error Message List 154
7 Error Messages 158
148 N9340A User’s Guide 158
Menu Map 159
8Menu Map 160
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Menu Map 8 161
N9340A User’s Guide 151 161
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N9340A User’s Guide 153 163
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N9340A User’s Guide 155 165
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N9340A User’s Guide 157 167
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*N9340-90001* 171

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