Anritsu S113C Guide de l'utilisateur Page 93
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- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Example 2: Harmonic Distortion
Most transmitting devices and signal sources contain harmonics. Measuring the harmonic
content of such sources is frequently required. In fact, measuring harmonic distortion is one
of the most common uses of spectrum analyzers.
The following harmonic distortion measurement applies an important group of spectrum
analyzer operating skills: setting the reference level, using start and stop frequencies; set-
ting the video bandwidth and RBW; and making relative measurements using two markers.
It also demonstrates setting a signal to center frequency using a marker.
Example
Step 1. Reset the Site Master to the factory default settings if a known starting state is
desired.
If the unit is off, hold down the ESC/CLEAR key while pressing the ON/OFF
key.
If the unit is on, press the RECALL SETUP key on the data keypad. When the
key is pressed, a Recall Trace selection box appears on the display. Select setup
location 0 to recall the factory preset state.
Step 2.
Press AMPLITUDE and then select
REF LEVEL
Step 3. Enter the desired Reference Level (+20 dB) using the keypad and press
ENTER.
Step 4. Connect a signal source to the Anritsu Site Master.
Step 5. Set the signal source frequency to 10 MHz and the signal level to +10 dBm.
Step 6. Set the
START frequency at 1 MHz
Step 7. Set the
STOP frequency to 50 MHz
Step 8. Set the resolution bandwidth to improve visibility by smoothing the noise:
a. Press SWEEP
b. Press
RBW, then MANUAL.
Step 9. Use the Up/down arrow key to select the desired resolution bandwidth, 100 kHz
in this case.
Step 10.
Press ENTER once the desired resolution bandwidth has been selected.
Step 11. Set the video bandwidth to improve visibility by smoothing the noise:
a. Press SWEEP
b. Press
VBW, then MANUAL.
Step 12. Use the Up/down arrow key to select the desired video bandwidth, 3 kHz in this
case.
Step 13.
Press ENTER once the desired video bandwidth has been selected.
Step 14.
Press the MARKER key and select the
M1 soft key
Step 15. Press the
MARKER TO PEAK soft key to set marker M1 to the peak signal (fun-
damental frequency). Note that marker M1 will automatically be turned on.
Step 16.
Press the MARKER key and select the
M2 soft key.
5-21
Chapter 5 Spectrum Analyzer Measurements
- Site Master 1
- S113C, S114C 1
- S331C, and S332C 1
- Antenna, Cable and 1
- Spectrum Analyzer 1
- WARRANTY 3
- LIMITATION OF WARRANTY 3
- TRADEMARK ACKNOWLEDGMENTS 3
- Table of Contents 5
- Chapter 3 - Getting Started 6
- Chapter 6 - Power Measurement 8
- Chapter 7 - Software Tools 8
- Appendix A - Reference Data 8
- Appendix B - Windowing 8
- Chapter 1 9
- General Information 9
- Printers 10
- Optional Accessories 11
- Performance Specifications 12
- Chapter 1 General Information 13
- Preventive Maintenance 14
- Calibration 14
- Annual Verification 15
- ESD Precautions 15
- Chapter 2 17
- Functions and Operations 17
- Front Panel Overview 18
- Function Hard Keys 19
- Keypad Hard Keys 20
- Soft Keys 22
- MODE=DTF: 23
- SOFTKEYS: 23
- FREQ/DIST 23
- AMPLITUDE 23
- MODE=SPECTRUM ANALYZER: 24
- Power Monitor Menu 34
- Self Test 35
- Error Codes 35
- Description 36
- Self Test Error Messages 36
- Range Errors 37
- InstaCal Error Messages 38
- Battery Information 40
- BATTERY INDI 41
- Battery Life 42
- 2-27/2-28 43
- Chapter 3 44
- Getting Started 44
- Site Master Mode 45
- Calibration Verification 46
- Figure 3-2. Calibration Setup 47
- InstaCal Module Verification 48
- Site Master S332C 49
- Setting the Scale 50
- Auto Scale 50
- Amplitude Scale 50
- Spectrum Analyzer Mode 52
- Selecting Sweep Parameters 53
- Adjusting Attenuator Settings 54
- Save and Recall a Setup 55
- Save and Recall a Display 55
- Changing the Units 56
- Changing the Display Language 56
- Adjusting Markers 56
- Adjusting Limits 56
- Setting the System Language 58
- Setting the System Impedance 58
- Printing 59
- Printer Switch Settings 60
- Using the Soft Carrying Case 61
- Chapter 4 62
- Cable & Antenna 62
- Measurements 62
- MODE key 64
- Insertion Loss Measurement 65
- ´ Length (ft) = Loss (dB) 66
- Resolution 70
- MARKER key 71
- 4-11/4-12 72
- Chapter 5 73
- AUTO mode, as the 74
- MANUAL) mode, the 74
- AM/FM Modulation 75
- Frequency Modulation 76
- Field Strength Measurements 78
- Creating a Spectral Mask 79
- EDIT and enter the 80
- EDIT when done 80
- Trace Overlay 81
- Occupied Bandwidth 82
- Channel Power Measurement 84
- GSM Channel Power Measurement 84
- Procedure 85
- Adjacent Channel Power Ratio 87
- Measurement Applications 89
- OUT OF BANDOUT OF BAND 95
- In-band Spurious Measurement 97
- Required Equipment 97
- Field Strength 99
- Antenna Calculations 100
- 5-29/5-30 101
- Power Measurement 102
- Chapter 6 102
- Chapter 7 104
- Software Tools 104
- Installation 105
- Using Software Tools 106
- Plot Capture to the PC 107
- Plot Upload to the Instrument 107
- Plot Properties 107
- Trace Overlay or Plot Overlay 108
- Saving Traces 109
- Creating a Database 110
- Printing Formats 110
- Uploading Antenna Factors 111
- 7-9/7-10 112
- Appendix A 113
- Reference Data 113
- Appendix A Reference Data 114
- Appendix B 116
- Windowing 116
- Appendix B Windowing 117
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