Agilent Technologies N9340A Uživatelská příručka stáhnout pdf (Strana 52)

4 Making Measurements

50 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 5 A signal closer to the noise level (Atten:20 dB)

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

attenuation to 0 dB.

Figure 6 A signal closer to the noise level (Atten: 0 dB)

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User’s Guide 1
2
1 N9340A Overview 3
2Getting Started 3
3 System Setting 3
4Making Measurements 4
5Key Reference 5
7 Error Messages 8
8Menu Map 8
N9340A Overview 9
Introduction 10
Enhanced Usability 11
Front Panel Overview 12
Top Panel Overview 13
Display Annotations 14
Step Notes 15
Internal Charging 16
Getting Started 17
Power Requirements 19
AC Power Cords 20
Safety Considerations 21
CAU-CAUTION 22
Environmental Requirements 23
Electrical Requirements 23
Instrument Markings 24
Power on your N9340A 25
Preparation for Use 26
Entering Data 28
Viewing a Signal 29
Some helpful tips 30
Upgrading Firmware 31
Adding an option 31
Contact Agilent Technologies 32
System Setting 33
Visual and Audio Adjustment 34
Ext Input 36
Quick Saving State 37
Recalling State 37
Saving a file 38
Deleting a file 39
Loading a file 39
Show System 40
Show Error 41
Factory Default Settings 44
Making Measurements 45
Measuring Multiple Signals 46
Accuracy" on page 54 47
Directional 48
Signal generator 48
Resolving Small Signals 50
Hidden by Large Signals 50
Measuring a Low-Level Signal 51
Increased Sweep Time 54
Trace Averaging 55
Measuring Phase Noise 63
Phrasenoise a RBWlog–= 63
One Button Measurement 65
Measuring ACPR 66
Measuring Channel Power 67
Channel Bandwidth 68
Key Reference 69
Amplitude 70
Scale/DIV 71
Scale Type 71
Ref Offset 72
Y Axis Units 72
Avg Type 74
In non-zero spans: 76
In zero span: 76
In FFT Mode 77
Sweep Mode 77
Single Sweep 78
Frequency 81
•Next LF Peak 85
•Next RT Peak 85
•Auto Search 85
•To Center 86
•Freq Count 86
Marker Trace 87
Last Span 89
Clear Write 90
Max Hold 90
Minimum Hold 91
Detector 91
•Average 92
•Pos Peak 92
•Neg Peak 93
Save Trace 94
Recall Trace 94
Limit Line 95
Limit Pattern 95
Set Pattern 95
Limit Type 95
Save Pattern 96
Recall Pattern 96
SCPI Command Reference 97
SCPI Language Basics 98
Basic Knowledge Requirement 99
Command Categories 99
Command Syntax 99
Standard Notations 100
Separator 101
Common Commands 102
CALCulate Subsystem 103
Control Limit line Buzzer 104
Control Limit Line Testing 104
Set Limit Line Y-axis value 104
Control Limit Pattern Testing 105
Define Limit Pattern Values 106
CALCulate:MARKer Subsection 107
Marker Function 108
Marker Mode 109
Marker On/Off 110
Marker to Trace 111
Marker X Value 111
Marker Read Y Value 112
DEMOdulation Subsystem 113
DISPlay Subsystem 114
Trace Y-Axis Reference Level 115
Vertical Axis Scaling 116
Screen Color Style 116
Display Mode 116
Contrast 117
Brightness 117
INITiate Subsystem 118
Take New Data Acquisitions 119
Select One button measurement 120
MEASure Subsystem 121
Main channel 122
Adjacent channel 122
Channel space 122
Main Channel Power 123
Low Adjacent Channel Power 123
Upper Adjacent Channel Power 123
Channel Power Subsection 124
Channel Power 125
Power Density 125
SENSe Subsystem 126
Tur n Aver agin g On /Off 127
Set the Average Count 127
[:SENSe]:BANDwidth Subsection 128
Video Bandwidth Automatic 129
[:SENSe]:DETector Subsection 130
[:SENSe]:FREQuency Subsection 131
Center Frequency Step Size 132
Frequency Span 132
Full Frequency Span 133
Zero Frequency Span 133
Last Frequency Span 133
Start Frequency 133
Stop Frequency 134
[:SENSe]:POWer Subsection 135
[:SENSe]:SWEep Subsection 136
SYSTem Subsystem 137
TRACe Subsystem 138
TRIGer Subsystem 139
Video Trigger Level Amplitude 140
UNIT Subsystem 141
6 SCPI Command Reference 142
140 N9340A User’s Guide 142
Error Messages 143
Error Message List 144
Menu Map 149
8 Menu Map 150
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Menu Map 8 151
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Agilent Technologies 161

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