Agilent Technologies N9340A Guia do Utilizador descarregar pdf (Página 162)

6 SCPI Command Reference

156 N9340A User’s Guide

UNIT Subsystem

Selects a power unit for measurement.

:UNIT:POWer DBM|DBMV|DBUV|V|W

:UNIT:POWer?

This command specifies the amplitude units for the

input, output, and display.

*RST Value: dBm

Available units dBm, dBmV, dBuV, V, W

1 2 ... 157 158 159 160 161 162 163 164 165 166 167 ... 178 179

User’s Guide 1
2
Contents 3
5 Key Reference 4
6 SCPI Command Reference 4
7Error Messages 5
8 Menu Map 5
Documentation Conventions: 5
Overview 7
Introduction 8
Optimized Usability 9
Front Panel Overview 10
Top Panel Overview 11
15:44:03 03,10,08 12
Instrument Markings 13
1Overview 14
8 N9340A User’s Guide 14
Getting Started 15
Safety Considerations 17
1 Getting Started 18
12 N9340A User’s Guide 18
Power Requirements 19
AC Power Cords 20
Environmental Requirements 21
Electrical Requirements 21
Working with Batteries 22
Charging a Battery 23
Power on your N9340A 24
• turn off backlight 25
• turn off screen display 25
Entering Data 27
Some Helpful Tips 29
Saving Multiple Test Setups 30
Upgrading Firmware 31
Adding an option 31
System Setting 33
Visual and Audio Adjustment 34
Ext Input 36
Quick saving a setup 37
Quick recalling a setup 37
Parameters) 37
File Types 38
Saving a file 39
Viewing file list 40
Deleting a file 41
Loading a file 41
Show System 42
Show Error 43
Factory Default Settings 45
4System Setting 46
40 N9340A User’s Guide 46
Making Measurements 47
Measuring Multiple Signals 48
Directional 50
Signal generator 50
Resolving Small Signals 52
Hidden by Large Signals 52
Measuring a Low-Level Signal 53
Increased Sweep Time 56
Trace Av eragi ng 57
One-button Power Measurement 65
Measuring ACPR 66
Measuring Channel Power 67
Channel Bandwidth 68
Low-pass Filter 71
N9340A 73
Making Measurements 4 75
N9340A User’s Guide 69 75
Calibration Routine 76
4 Making Measurements 82
76 N9340A User’s Guide 82
Key Reference 83
Amplitude 84
Scale/DIV 85
Scale Type 85
Ref Offset 86
Y Axis Units 86
Spectrum Analyzer 87
Track ing G ener ator 87
Amptd Step 88
Amptd Offset 88
Normalize 88
Power Meter 90
Meas Disp 91
Meas Setup 92
Avg Type 96
In non-zero spans: 98
In zero span: 98
In FFT Mode 99
Sweep Mode 99
Single Sweep 100
CAU-CAUTION 102
Frequency 103
Peak Search 107
• Freq Count 108
Marker Trace 109
Last Span 111
Clear Write 112
Max Hold 112
Minimum Hold 113
Detector 113
Save Trace 116
Recall Trace 116
Limit Line 117
Limit Pattern 117
Set Pattern 117
Limit Type 117
Save Pattern 118
Recall Pattern 118
SCPI Command Reference 119
SCPI Language Basics 120
Basic Knowledge Requirement 121
Command Categories 121
Command Syntax 121
Standard Notations 122
Default unit of parameters 123
Common Commands 124
CALCulate Subsystem 125
Control Limit line Buzzer 126
Control Limit Line Testing 126
Set Limit Line Y-axis value 126
Control Limit Pattern Testing 127
Define Limit Pattern Values 128
CALCulate:MARKer Subsection 129
Marker Function 130
Marker Mode 131
Marker On/Off 132
Marker to Trace 132
Marker readout: X Value 133
Marker readout: Y Value 133
DEMOdulation Subsystem 134
DISPlay Subsystem 135
Vertical Axis Scaling 137
Display Mode 137
Contrast 138
Brightness 138
INITiate Subsystem 139
Select One button measurement 140
MEASure Subsystem 141
ACPR Subsection 142
Low Adjacent Channel Power 143
Upper Adjacent Channel Power 143
Channel Power Subsection 144
SENSe Subsystem 145
Turn Averaging On/Off 146
Set the Average Count 146
[:SENSe]:BANDwidth Subsection 147
Video Bandwidth Automatic 148
[:SENSe]:DETector Subsection 149
FREQuency Subsection 150
Center Frequency Step Size 151
Frequency Span 151
Full Frequency Span 151
Zero Frequency Span 151
Last Frequency Span 152
Start Frequency 152
Stop Frequency 152
[:SENSe]:POWer Subsection 153
SWEep Subsection 154
SYSTem Subsystem 155
TRACe Subsystem 156
Tracking Generator Subsystem 157
Amplitude Step 158
Amplitude Offset 158
Storing as reference 158
Normalization 159
Normalization Reference Level 159
Reference Trace 160
TRIGer Subsystem 161
UNIT Subsystem 162
Error Messages 163
Error Message List 164
Menu Map 167
8Menu Map 168
162 N9340A User’s Guide 168
Menu Map 8 169
N9340A User’s Guide 163 169
164 N9340A User’s Guide 170
N9340A User’s Guide 165 171
166 N9340A User’s Guide 172
N9340A User’s Guide 167 173
168 N9340A User’s Guide 174
N9340A User’s Guide 169 175
170 N9340A User’s Guide 176
*N9340-90001* 179

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