Agilent Technologies N9340A Guia do Utilizador Página 57
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Making Measurements 4
N9340B User’s Guide 51
Figure 4-14 Identifying Analyzer Distortion (O dB atten)
8 Press [AMPTD] > {Attenuation} > 10 > {dB} to
increase the RF attenuation to 10 dB.
Figure 4-15 Identifying Analyzer Distortion (10 dB atten)
The marker readout comes from two sources:
• Increased input attenuation causes poorer
signal- to- noise ratio. This causes the marker
delta value to be positive.
• Reduced contribution of the analyzer circuits
to the harmonic measurement causes the
marker to be negative.
A large marker delta value readout indicates
significant measurement errors. Set the input
attenuator at a level to minimize the absolute value
of marker delta.
- User’s Guide 1
- 2
- Contents 3
- 4 Making Measurements 4
- 5 Key Reference 4
- 6Error Messages 5
- 7 Troubleshooting 5
- 8 Menu Map 5
- Documentation Conventions: 6
- Introduction 8
- Optimized Usability 10
- Front Panel Overview 11
- 15:44:03 03,10,08 12
- Top Panel Overview 13
- Instrument Markings 14
- Getting Started 15
- Power Requirements 17
- AC Power Cords 18
- Safety Considerations 19
- 2 Getting Started 20
- 14 N9340B User’s Guide 20
- Environmental Requirements 21
- Electrical Requirements 21
- Working with Batteries 22
- Charging a Battery 23
- Install battery 24
- Press Power Switch 24
- Preparation for Use 25
- Entering Data 26
- 22 N9340B User’s Guide 28
- System and File 29
- System Setting 30
- Factory Default Settings 31
- Visual and Audio Adjustment 32
- General system settings 32
- Switch Timer 33
- IP configuration 33
- Upgrading Firmware 34
- Ext Input 34
- Adding an Option 35
- Show System 36
- Show Error 36
- Low Frequency Channel 37
- Viewing file list 38
- Saving a file 39
- Saving Multiple Test Setups 40
- Quick saving a setup 40
- Deleting a file 41
- Loading a file 41
- 3 System and File 42
- 36 N9340B User’s Guide 42
- Making Measurements 43
- Measuring Multiple Signals 44
- Accuracy" on page 48 45
- Directional 46
- Signal generator 46
- Resolving Small Signals 48
- Hidden by Large Signals 48
- Measuring a Low-Level Signal 49
- Increased Sweep Time 52
- Trace Averagi ng 53
- CAU-CAUTION 61
- Low-pass Filter 63
- N9340A 65
- Making Measurements 4 67
- N9340B User’s Guide 61 67
- Calibration Routine 68
- Spectrogram Audio Alert 76
- Demodulating an FM Signal 77
- AM/FM Demodulation Analysis 79
- FM Demodulation Analysis 80
- ASK/FSK Demodulation Analysis 82
- FSK Demodulation Analysis 84
- Key Reference 87
- Amplitude 88
- Scale/DIV 89
- Scale Type 89
- HiSensitivity 90
- Ref Offset 90
- Y Axis Units 90
- EMF Mode 91
- Grid Scale 91
- Avg Type 93
- In FFT Mode 96
- Sweep Type 96
- Sweep Mode 96
- Single Sweep 97
- Frequency 99
- Freq Offset 100
- Peak Search 103
- Marker To 104
- Marker Trace 105
- Marker Table 105
- Selecting a Method 106
- Main Channel 107
- Adjacent Channel 107
- Channel Space 107
- Center Frequency 107
- Channel Power 108
- Spectrum Emission Mask (SEM) 109
- Offset/Limits 110
- Start Freq 112
- Stop Freq 112
- Sweep Time 112
- Abs StartAmpt 113
- Abs StopAmpt 113
- Rel StartAmpt 113
- Rel StopAmpt 113
- Fail Mask 114
- Spectrogram 115
- Disp Mode 116
- Save&Load 116
- Start/Stop Save 116
- Timed Setting 116
- File Setup 117
- Save RAM 117
- Save RAM As 117
- Load Spctrg 117
- Spectrum Analyzer 118
- Trackin g Generator 118
- Amptd Step 119
- Amptd Offset 119
- Normalize 119
- Power Meter 121
- Meas Disp 122
- Meas Setup 124
- is applied to the 125
- IBOC Measurement 126
- Quick Span 127
- Mask Fuction 128
- Auto Tune 130
- Tune Range 131
- Spectrogram Run/Pause 131
- Restart Meas 131
- Update Interval 131
- Spec View 131
- Last Span 134
- Speaker Vol 135
- Delay Time 135
- Free Run 136
- Ext Rise 137
- Ext Fall 137
- Trig Delay 137
- Clear Write 138
- Max Hold 138
- Minimum Hold 139
- Detector 139
- Save Trace 141
- Recall Trace 142
- Limit Line 143
- Edit Limits 143
- Limit Type 144
- Save Limits 144
- Load Limits 144
- Error Messages 145
- Overview 146
- Error Message List 147
- 6 Error Messages 150
- 144 N9340B User’s Guide 150
- Troubleshooting 151
- Check the basics 152
- Warranty and Service Options 153
- Contact Agilent Technologies 154
- Menu Map 155
- 8Menu Map 156
- 150 N9340B User’s Guide 156
- Menu Map 8 157
- N9340B User’s Guide 151 157
- 152 N9340B User’s Guide 158
- Peaks Search 159
- 154 N9340B User’s Guide 160
- MODE - IBOC Measurement 161
- MODE - Tracking Generator 162
- MODE - Power Meter 163
- 158 N9340B User’s Guide 164
- N9340B User’s Guide 159 165
- MODE - xDSL 166
- N9340B User’s Guide 161 167
- Language> 168
- N9340B User’s Guide 163 169
- 164 N9340B User’s Guide 170
- *N9340-90008* 174
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