Difference between revisions of "Spectrum Analyser"
(New page: A spectrum analyzer is a piece of equipment that is used during EMC measurements. It's primary purpose is to measure the amplitude of individual frequencies that are contained in a RF sign...) |
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| − | A spectrum | + | A spectrum analyser is a piece of equipment that is used during EMC measurements. It's primary purpose is to measure the amplitude of individual frequencies that are contained in a RF signal. This RF signal is very often an [[electromagnetic field]] that is received by an [[antenna]]. |
| − | [[RadiMation]] has divided spectrum | + | [[RadiMation]] has divided spectrum analysers in three different classes: |
| − | * Spectrum | + | * Spectrum analyser |
* Scanning receiver | * Scanning receiver | ||
* Receiver | * Receiver | ||
| Line 14: | Line 14: | ||
A scanning receiver is always measuring on all and the exact frequencies that are specified by the start-, stop- and step-frequency. | A scanning receiver is always measuring on all and the exact frequencies that are specified by the start-, stop- and step-frequency. | ||
| − | == Spectrum | + | == Spectrum analyser == |
| − | A spectrum | + | A spectrum analyser is a measuring device that sweeps in a short time along the frequency range that should be measured. During this sweep all frequencies are measured, and a PC can retrieve a list of the measured amplitudes from the spectrum analyser. The list of measured amplitudes is often a reduced list of a specific amount of frequencies (401 points, 601 points, etc...) |
== Common == | == Common == | ||
| − | Most scanning receivers and spectrum | + | Most scanning receivers and spectrum analysers include a lot of functionality to make it easier for an end-user to perform certain measurements. This additional functionality can be: |
* EMC Overview measurements | * EMC Overview measurements | ||
* Completely automated EMC measurements including peak detection and peak measurements | * Completely automated EMC measurements including peak detection and peak measurements | ||
* telecommunication measurements | * telecommunication measurements | ||
| − | Spectrum | + | Spectrum analysers are always used during [[Emission]] tests. In some situations a spectrum analyser is also used during [[immunity]] tests, mainly to measure a RF signal. |
| − | All the device drivers for spectrum | + | All the device drivers for spectrum analysers maintain the following information: |
* Allowed frequency range | * Allowed frequency range | ||
| − | * if the device is a receiver / scanning receiver / spectrum | + | * if the device is a receiver / scanning receiver / spectrum analyser |
* Instructions on how to | * Instructions on how to | ||
** Set start-, stop-, center-, span- and step-frequency | ** Set start-, stop-, center-, span- and step-frequency | ||
| Line 40: | Line 40: | ||
** change [[detector]] settings | ** change [[detector]] settings | ||
| − | A complete [[:Category:Spectrum Analyser|list of all supported spectrum | + | A complete [[:Category:Spectrum Analyser|list of all supported spectrum analysers]] by [[RadiMation]] is available on this [[RadiWiki]] site. |
== Links == | == Links == | ||
| − | * Wikipedia: [[wikipedia:Spectrum | + | * Wikipedia: [[wikipedia:Spectrum analyser|Spectrum analyser]] |
| − | |||
[[Category:RadiMation]] | [[Category:RadiMation]] | ||
Latest revision as of 08:38, 3 January 2020
A spectrum analyser is a piece of equipment that is used during EMC measurements. It's primary purpose is to measure the amplitude of individual frequencies that are contained in a RF signal. This RF signal is very often an electromagnetic field that is received by an antenna.
RadiMation has divided spectrum analysers in three different classes:
- Spectrum analyser
- Scanning receiver
- Receiver
Receiver
A receiver is only measuring a single RF frequency. The receiver itself is not able to measure multiple frequencies. If more than one frequency need to be measured a PC has to change the selected frequency on the receiver, before a new measurement is performed.
Scanning receiver
A scanning receiver is a more intelligent receiver, which is able to step through a frequency range on it's own, so multiple frequencies can be measured automatically. A PC that is controlling the scanning receiver can instruct the scanning receiver to measure a certain frequency range. The scanning receiver will then return the data of the all the measured frequencies after (or during) the measurement is finished.
A scanning receiver is always measuring on all and the exact frequencies that are specified by the start-, stop- and step-frequency.
Spectrum analyser
A spectrum analyser is a measuring device that sweeps in a short time along the frequency range that should be measured. During this sweep all frequencies are measured, and a PC can retrieve a list of the measured amplitudes from the spectrum analyser. The list of measured amplitudes is often a reduced list of a specific amount of frequencies (401 points, 601 points, etc...)
Common
Most scanning receivers and spectrum analysers include a lot of functionality to make it easier for an end-user to perform certain measurements. This additional functionality can be:
- EMC Overview measurements
- Completely automated EMC measurements including peak detection and peak measurements
- telecommunication measurements
Spectrum analysers are always used during Emission tests. In some situations a spectrum analyser is also used during immunity tests, mainly to measure a RF signal.
All the device drivers for spectrum analysers maintain the following information:
- Allowed frequency range
- if the device is a receiver / scanning receiver / spectrum analyser
- Instructions on how to
- Set start-, stop-, center-, span- and step-frequency
- change RBW settings
- change Reference level settings
- change Attenuation settings
- change VBW settings
- change preselector settings
- change preamplifier settings
- change measure time settings
- change sweep time settings
- change detector settings
A complete list of all supported spectrum analysers by RadiMation is available on this RadiWiki site.
Links
- Wikipedia: Spectrum analyser
