How to Track EMI Emission Source by Spectrum Analyzer
Spectrum analyzer is a more suitable instrument for measuring EMI. Spectrum analyzer is the instrument displaying voltage amplitude change with the frequency and its waveform called spectrum. Spectrum analyzer overcomes the shortcomings of oscilloscope in measuring EMI and it can accurately measure the EMI at each frequency and directly display the signal spectrum components.
Below is the introduction of how to use nearby probe and spectrum analyzer SA9275 or SA9115 to test nearby EMI.
Nearby probe includes: EMI electric field probe and EMI magnetic field probe.
Figure 1. Nearby Probe Set
Test methods:
Set spectrum analyzer's sweep range and analyzing bandwidth according to the interference frequency.
The corresponding relationship between sweep range and analyzing bandwidth are as follows:
Sweep range | Analyzing bandwidth |
9kHz~150 kHz Additional resources:What Are The Features And Specifications of The Multihead Weigher? Which Mems North Alignment System suits your needs? What is a Flexible Coil Large Current Clamp Meter? How to Choose the Best Frequency Counter for Purchase Stage? Which 3D Data Acquisition technology offers the best results for B2B purchases? What are the top 5 tips for choosing the best Geophone Leak Detector for your purchase stage needs? Exploring the Depths: Single Channel Seismic Insights | 200Hz(6dB) |
| 150kHz~30MHz | 9kHz(6dB) |
| 30MHz ~1GHz | 120kHz(6dB) |
>1GHz | 1MHz(3dB) |
To set the Spectrum analyzer's sweep range, you need press【FREQ】firstly and then set Starting frequency and Stop frequency.
To set the analyzing bandwidth, you need to press【BW】firstly, and then input the needed bandwidth which should be within the range of this instrument.
Figure 2. SA9275 EMI Test
Figure 3. SA9115 EMI Test
How to Choose the Best Seismograph?
Revolutionizing Earthquake Detection: Stryde Seismic Node – A Game Changer or Overhyped Technology?
Comments
0