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Is it possible to measure frequency upto 500Mhz with 50Mhz oscilloscope?
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Is there a way to measure higher frequency measurements with a 50 MHz oscilloscope (eg rigol ds1054z)? Perhaps some post processing of captured waveforms? Or with the help of some adapters?
I have a Rigol DSO1504z digital oscilloscope.
Link. http://www.scientechworld.com/test-and-measurement-solutions/digital-oscilloscopes/50mhz-digital-oscilloscope-ds1054z
oscilloscope high-frequency frequency-measurement
edited Aug 25 at 13:33
winny
4,36321726
asked Aug 25 at 9:04
Starfish
83
 |Â
show 2 more comments
up vote
1
down vote
favorite
Is there a way to measure higher frequency measurements with a 50 MHz oscilloscope (eg rigol ds1054z)? Perhaps some post processing of captured waveforms? Or with the help of some adapters?
I have a Rigol DSO1504z digital oscilloscope.
Link. http://www.scientechworld.com/test-and-measurement-solutions/digital-oscilloscopes/50mhz-digital-oscilloscope-ds1054z
oscilloscope high-frequency frequency-measurement
edited Aug 25 at 13:33
winny
4,36321726
asked Aug 25 at 9:04
Starfish
83
6
If you had fifty orange root vegetables you would write is as "50 carrots" and not "50carrots". "M" means mega and "m" means milli.
– Andy aka
Aug 25 at 9:08
1
Is the oscilloscope digital or analog? Can you add the make and model and a link to the user manual into your question?
– Transistor
Aug 25 at 9:09
1
You might also get more specific answers if you describe where your signal comes from, what it is etc.
– Marcus Müller
Aug 25 at 9:26
1
@AndyAka So it’s just not me who is irked to the bone about that?
– winny
Aug 25 at 13:34
1
@winny there's a right way and there's a wrong way dude LOL.
– Andy aka
Aug 25 at 16:53
 |Â
show 2 more comments
up vote
1
down vote
favorite
up vote
1
down vote
favorite
Is there a way to measure higher frequency measurements with a 50 MHz oscilloscope (eg rigol ds1054z)? Perhaps some post processing of captured waveforms? Or with the help of some adapters?
I have a Rigol DSO1504z digital oscilloscope.
Link. http://www.scientechworld.com/test-and-measurement-solutions/digital-oscilloscopes/50mhz-digital-oscilloscope-ds1054z
oscilloscope high-frequency frequency-measurement
edited Aug 25 at 13:33
winny
4,36321726
asked Aug 25 at 9:04
Starfish
83
Is there a way to measure higher frequency measurements with a 50 MHz oscilloscope (eg rigol ds1054z)? Perhaps some post processing of captured waveforms? Or with the help of some adapters?
I have a Rigol DSO1504z digital oscilloscope.
Link. http://www.scientechworld.com/test-and-measurement-solutions/digital-oscilloscopes/50mhz-digital-oscilloscope-ds1054z
oscilloscope high-frequency frequency-measurement
edited Aug 25 at 13:33
winny
4,36321726
asked Aug 25 at 9:04
Starfish
83
edited Aug 25 at 13:33
winny
4,36321726
edited Aug 25 at 13:33
winny
4,36321726
edited Aug 25 at 13:33
winny
4,36321726
4,36321726
asked Aug 25 at 9:04
Starfish
83
asked Aug 25 at 9:04
Starfish
83
asked Aug 25 at 9:04
Starfish
83
83
6
If you had fifty orange root vegetables you would write is as "50 carrots" and not "50carrots". "M" means mega and "m" means milli.
– Andy aka
Aug 25 at 9:08
1
Is the oscilloscope digital or analog? Can you add the make and model and a link to the user manual into your question?
– Transistor
Aug 25 at 9:09
1
You might also get more specific answers if you describe where your signal comes from, what it is etc.
– Marcus Müller
Aug 25 at 9:26
1
@AndyAka So it’s just not me who is irked to the bone about that?
– winny
Aug 25 at 13:34
1
@winny there's a right way and there's a wrong way dude LOL.
– Andy aka
Aug 25 at 16:53
 |Â
show 2 more comments
6
If you had fifty orange root vegetables you would write is as "50 carrots" and not "50carrots". "M" means mega and "m" means milli.
– Andy aka
Aug 25 at 9:08
1
Is the oscilloscope digital or analog? Can you add the make and model and a link to the user manual into your question?
– Transistor
Aug 25 at 9:09
1
You might also get more specific answers if you describe where your signal comes from, what it is etc.
– Marcus Müller
Aug 25 at 9:26
1
@AndyAka So it’s just not me who is irked to the bone about that?
– winny
Aug 25 at 13:34
1
@winny there's a right way and there's a wrong way dude LOL.
– Andy aka
Aug 25 at 16:53
6
6
If you had fifty orange root vegetables you would write is as "50 carrots" and not "50carrots". "M" means mega and "m" means milli.
– Andy aka
Aug 25 at 9:08
If you had fifty orange root vegetables you would write is as "50 carrots" and not "50carrots". "M" means mega and "m" means milli.
– Andy aka
Aug 25 at 9:08
1
1
Is the oscilloscope digital or analog? Can you add the make and model and a link to the user manual into your question?
– Transistor
Aug 25 at 9:09
Is the oscilloscope digital or analog? Can you add the make and model and a link to the user manual into your question?
– Transistor
Aug 25 at 9:09
1
1
You might also get more specific answers if you describe where your signal comes from, what it is etc.
– Marcus Müller
Aug 25 at 9:26
You might also get more specific answers if you describe where your signal comes from, what it is etc.
– Marcus Müller
Aug 25 at 9:26
1
1
@AndyAka So it’s just not me who is irked to the bone about that?
– winny
Aug 25 at 13:34
@AndyAka So it’s just not me who is irked to the bone about that?
– winny
Aug 25 at 13:34
1
1
@winny there's a right way and there's a wrong way dude LOL.
– Andy aka
Aug 25 at 16:53
@winny there's a right way and there's a wrong way dude LOL.
– Andy aka
Aug 25 at 16:53
 |Â
show 2 more comments
3 Answers
3
active
oldest
votes
up vote
2
down vote
accepted
Included mostly for interest, as this is not a beginner project.
There's a way, but it's not all that simple. Build a sampling front end for an oscilloscope.
The above circuit will allow periodic signals with 1GHz bandwidth to be measured on a 10MHz or better analog oscilloscope. It's no good for one-shot signals.
answered Aug 25 at 17:30
Spehro Pefhany
193k4139383
add a comment |Â
up vote
6
down vote
Not really. 500MHz is too far above the nominal bandwidth for any aliasing frequencies to get through to the digitiser within it.
You can use your scope as a 'back end' for two different types of front end.
The first is a heterodyne downconverting mixer. You would need a local oscillator, close to 500MHz, and a mixer. The scope would measure the IF, the difference between the LO and the input. It would show you the amplitude of the fundamental of the input waveform as well, sufficiently well to measure it.
The second is a digital divider. Prescalers are fairly inexpensive and obtainable, a /16 would get 500MHz down to 31MHz. It would tell you nothing about the amplitude, except whether it was enough to clock the divider or not.
A lower cost alternative to the simple LO and mixer would be a harmonic mixer. This would allow for a lower frequency LO, but there's more potential for unwanted products to get through to the IF.
Because all of these methods throw away or confuse some information about the input signal, you need to be more careful about interpretting what you see in the IF. Other input signal frequencies will confuse the output, and differently depending on whether they're harmonically or non-harmonically related, and bigger or smaller than the wanted signal. A bandpass filter at 500MHz could be a useful investment.
That last paragraph seems quite vague. It's like this. If you know what I'm talking about, then you don't need any more detail. If you don't, then there's no way you can be brought up to speed on what to look out for in the space of an answer here. Look up superheterodyne, intermodulation, and 'how a spectrum analyser works'.
answered Aug 25 at 9:23
Neil_UK
69.2k272152
1
I was about to write the same answer, but luckily you were faster! Please do also point out that mixing down only works for bandpass signals: If OP has a signal that has spectral components "somewhere between 0 and 500 MHz", this doesn't help.
– Marcus Müller
Aug 25 at 9:25
@MarcusMüller There are compressive sensing techniques that depend on the actual bandwidth of the signal and not on the bandwidth range considered. For example, if you had a 100KHz signal "somewhere" in a 1GHz range, it could be isolated while doing the processing at far less than 1GHz. That said, the techniques are fairly sophisticated and probably not practical for this use case.
– Derek Elkins
Aug 25 at 22:50
@Derek compressive sensing would require the analog frontend to still let through the frequencies with signal on them :) but yes, you could, given suitable spectral signal location maybe do something like a multi-tone superhet and decompose that with compressive sensing methods...
– Marcus Müller
Aug 25 at 22:52
@MarcusMüller Of course. What I was suggesting would still require some heterodyne-like front-end. The benefit is merely that you wouldn't have to know and "tune" it to the correct frequency band. (Where these techniques are more valuable is when you have a multi-band signal. You could capture all of them simultaneously no matter how spread out in the frequency range they were, as long as the total bandwidth of all the bands was less that the processing rate.)
– Derek Elkins
Aug 25 at 22:57
add a comment |Â
up vote
1
down vote
Depends on the sampling-scope bandwidth.
When I first encountered a digital-scope, I wanted to explore the "aliasing". In that lab was a digital-NTSC-RF-generator (a fine beast from Phillips), and I set it to 1HZ faster than the scope's sampling rate of 200MHz. Indeed we saw a beat note on the scope's digital display of 1Hz.
Thus you may be able to down-convert from 500MHz to some lower rate. Try it.
answered Aug 25 at 10:44
analogsystemsrf
11.4k2616
1
While I do encourage just trying it and seeing what happens, there's a big difference between being 1Hz into the aliasing filter roll-off and being 450MHz beyond the nominal cutoff.
– Derek Elkins
Aug 25 at 18:15
add a comment |Â
3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
accepted
Included mostly for interest, as this is not a beginner project.
There's a way, but it's not all that simple. Build a sampling front end for an oscilloscope.
The above circuit will allow periodic signals with 1GHz bandwidth to be measured on a 10MHz or better analog oscilloscope. It's no good for one-shot signals.
answered Aug 25 at 17:30
Spehro Pefhany
193k4139383
add a comment |Â
up vote
2
down vote
accepted
Included mostly for interest, as this is not a beginner project.
There's a way, but it's not all that simple. Build a sampling front end for an oscilloscope.
The above circuit will allow periodic signals with 1GHz bandwidth to be measured on a 10MHz or better analog oscilloscope. It's no good for one-shot signals.
answered Aug 25 at 17:30
Spehro Pefhany
193k4139383
add a comment |Â
up vote
2
down vote
accepted
up vote
2
down vote
accepted
Included mostly for interest, as this is not a beginner project.
There's a way, but it's not all that simple. Build a sampling front end for an oscilloscope.
The above circuit will allow periodic signals with 1GHz bandwidth to be measured on a 10MHz or better analog oscilloscope. It's no good for one-shot signals.
answered Aug 25 at 17:30
Spehro Pefhany
193k4139383
Included mostly for interest, as this is not a beginner project.
There's a way, but it's not all that simple. Build a sampling front end for an oscilloscope.
The above circuit will allow periodic signals with 1GHz bandwidth to be measured on a 10MHz or better analog oscilloscope. It's no good for one-shot signals.
answered Aug 25 at 17:30
Spehro Pefhany
193k4139383
answered Aug 25 at 17:30
Spehro Pefhany
193k4139383
answered Aug 25 at 17:30
Spehro Pefhany
193k4139383
answered Aug 25 at 17:30
Spehro Pefhany
193k4139383
193k4139383
add a comment |Â
add a comment |Â
up vote
6
down vote
Not really. 500MHz is too far above the nominal bandwidth for any aliasing frequencies to get through to the digitiser within it.
You can use your scope as a 'back end' for two different types of front end.
The first is a heterodyne downconverting mixer. You would need a local oscillator, close to 500MHz, and a mixer. The scope would measure the IF, the difference between the LO and the input. It would show you the amplitude of the fundamental of the input waveform as well, sufficiently well to measure it.
The second is a digital divider. Prescalers are fairly inexpensive and obtainable, a /16 would get 500MHz down to 31MHz. It would tell you nothing about the amplitude, except whether it was enough to clock the divider or not.
A lower cost alternative to the simple LO and mixer would be a harmonic mixer. This would allow for a lower frequency LO, but there's more potential for unwanted products to get through to the IF.
Because all of these methods throw away or confuse some information about the input signal, you need to be more careful about interpretting what you see in the IF. Other input signal frequencies will confuse the output, and differently depending on whether they're harmonically or non-harmonically related, and bigger or smaller than the wanted signal. A bandpass filter at 500MHz could be a useful investment.
That last paragraph seems quite vague. It's like this. If you know what I'm talking about, then you don't need any more detail. If you don't, then there's no way you can be brought up to speed on what to look out for in the space of an answer here. Look up superheterodyne, intermodulation, and 'how a spectrum analyser works'.
answered Aug 25 at 9:23
Neil_UK
69.2k272152
1
I was about to write the same answer, but luckily you were faster! Please do also point out that mixing down only works for bandpass signals: If OP has a signal that has spectral components "somewhere between 0 and 500 MHz", this doesn't help.
– Marcus Müller
Aug 25 at 9:25
@MarcusMüller There are compressive sensing techniques that depend on the actual bandwidth of the signal and not on the bandwidth range considered. For example, if you had a 100KHz signal "somewhere" in a 1GHz range, it could be isolated while doing the processing at far less than 1GHz. That said, the techniques are fairly sophisticated and probably not practical for this use case.
– Derek Elkins
Aug 25 at 22:50
@Derek compressive sensing would require the analog frontend to still let through the frequencies with signal on them :) but yes, you could, given suitable spectral signal location maybe do something like a multi-tone superhet and decompose that with compressive sensing methods...
– Marcus Müller
Aug 25 at 22:52
@MarcusMüller Of course. What I was suggesting would still require some heterodyne-like front-end. The benefit is merely that you wouldn't have to know and "tune" it to the correct frequency band. (Where these techniques are more valuable is when you have a multi-band signal. You could capture all of them simultaneously no matter how spread out in the frequency range they were, as long as the total bandwidth of all the bands was less that the processing rate.)
– Derek Elkins
Aug 25 at 22:57
add a comment |Â
up vote
6
down vote
Not really. 500MHz is too far above the nominal bandwidth for any aliasing frequencies to get through to the digitiser within it.
You can use your scope as a 'back end' for two different types of front end.
The first is a heterodyne downconverting mixer. You would need a local oscillator, close to 500MHz, and a mixer. The scope would measure the IF, the difference between the LO and the input. It would show you the amplitude of the fundamental of the input waveform as well, sufficiently well to measure it.
The second is a digital divider. Prescalers are fairly inexpensive and obtainable, a /16 would get 500MHz down to 31MHz. It would tell you nothing about the amplitude, except whether it was enough to clock the divider or not.
A lower cost alternative to the simple LO and mixer would be a harmonic mixer. This would allow for a lower frequency LO, but there's more potential for unwanted products to get through to the IF.
Because all of these methods throw away or confuse some information about the input signal, you need to be more careful about interpretting what you see in the IF. Other input signal frequencies will confuse the output, and differently depending on whether they're harmonically or non-harmonically related, and bigger or smaller than the wanted signal. A bandpass filter at 500MHz could be a useful investment.
That last paragraph seems quite vague. It's like this. If you know what I'm talking about, then you don't need any more detail. If you don't, then there's no way you can be brought up to speed on what to look out for in the space of an answer here. Look up superheterodyne, intermodulation, and 'how a spectrum analyser works'.
answered Aug 25 at 9:23
Neil_UK
69.2k272152
1
I was about to write the same answer, but luckily you were faster! Please do also point out that mixing down only works for bandpass signals: If OP has a signal that has spectral components "somewhere between 0 and 500 MHz", this doesn't help.
– Marcus Müller
Aug 25 at 9:25
@MarcusMüller There are compressive sensing techniques that depend on the actual bandwidth of the signal and not on the bandwidth range considered. For example, if you had a 100KHz signal "somewhere" in a 1GHz range, it could be isolated while doing the processing at far less than 1GHz. That said, the techniques are fairly sophisticated and probably not practical for this use case.
– Derek Elkins
Aug 25 at 22:50
@Derek compressive sensing would require the analog frontend to still let through the frequencies with signal on them :) but yes, you could, given suitable spectral signal location maybe do something like a multi-tone superhet and decompose that with compressive sensing methods...
– Marcus Müller
Aug 25 at 22:52
@MarcusMüller Of course. What I was suggesting would still require some heterodyne-like front-end. The benefit is merely that you wouldn't have to know and "tune" it to the correct frequency band. (Where these techniques are more valuable is when you have a multi-band signal. You could capture all of them simultaneously no matter how spread out in the frequency range they were, as long as the total bandwidth of all the bands was less that the processing rate.)
– Derek Elkins
Aug 25 at 22:57
add a comment |Â
up vote
6
down vote
up vote
6
down vote
Not really. 500MHz is too far above the nominal bandwidth for any aliasing frequencies to get through to the digitiser within it.
You can use your scope as a 'back end' for two different types of front end.
The first is a heterodyne downconverting mixer. You would need a local oscillator, close to 500MHz, and a mixer. The scope would measure the IF, the difference between the LO and the input. It would show you the amplitude of the fundamental of the input waveform as well, sufficiently well to measure it.
The second is a digital divider. Prescalers are fairly inexpensive and obtainable, a /16 would get 500MHz down to 31MHz. It would tell you nothing about the amplitude, except whether it was enough to clock the divider or not.
A lower cost alternative to the simple LO and mixer would be a harmonic mixer. This would allow for a lower frequency LO, but there's more potential for unwanted products to get through to the IF.
Because all of these methods throw away or confuse some information about the input signal, you need to be more careful about interpretting what you see in the IF. Other input signal frequencies will confuse the output, and differently depending on whether they're harmonically or non-harmonically related, and bigger or smaller than the wanted signal. A bandpass filter at 500MHz could be a useful investment.
That last paragraph seems quite vague. It's like this. If you know what I'm talking about, then you don't need any more detail. If you don't, then there's no way you can be brought up to speed on what to look out for in the space of an answer here. Look up superheterodyne, intermodulation, and 'how a spectrum analyser works'.
answered Aug 25 at 9:23
Neil_UK
69.2k272152
Not really. 500MHz is too far above the nominal bandwidth for any aliasing frequencies to get through to the digitiser within it.
You can use your scope as a 'back end' for two different types of front end.
The first is a heterodyne downconverting mixer. You would need a local oscillator, close to 500MHz, and a mixer. The scope would measure the IF, the difference between the LO and the input. It would show you the amplitude of the fundamental of the input waveform as well, sufficiently well to measure it.
The second is a digital divider. Prescalers are fairly inexpensive and obtainable, a /16 would get 500MHz down to 31MHz. It would tell you nothing about the amplitude, except whether it was enough to clock the divider or not.
A lower cost alternative to the simple LO and mixer would be a harmonic mixer. This would allow for a lower frequency LO, but there's more potential for unwanted products to get through to the IF.
Because all of these methods throw away or confuse some information about the input signal, you need to be more careful about interpretting what you see in the IF. Other input signal frequencies will confuse the output, and differently depending on whether they're harmonically or non-harmonically related, and bigger or smaller than the wanted signal. A bandpass filter at 500MHz could be a useful investment.
That last paragraph seems quite vague. It's like this. If you know what I'm talking about, then you don't need any more detail. If you don't, then there's no way you can be brought up to speed on what to look out for in the space of an answer here. Look up superheterodyne, intermodulation, and 'how a spectrum analyser works'.
answered Aug 25 at 9:23
Neil_UK
69.2k272152
edited Aug 25 at 9:34
answered Aug 25 at 9:23
Neil_UK
69.2k272152
answered Aug 25 at 9:23
Neil_UK
69.2k272152
answered Aug 25 at 9:23
Neil_UK
69.2k272152
69.2k272152
1
I was about to write the same answer, but luckily you were faster! Please do also point out that mixing down only works for bandpass signals: If OP has a signal that has spectral components "somewhere between 0 and 500 MHz", this doesn't help.
– Marcus Müller
Aug 25 at 9:25
@MarcusMüller There are compressive sensing techniques that depend on the actual bandwidth of the signal and not on the bandwidth range considered. For example, if you had a 100KHz signal "somewhere" in a 1GHz range, it could be isolated while doing the processing at far less than 1GHz. That said, the techniques are fairly sophisticated and probably not practical for this use case.
– Derek Elkins
Aug 25 at 22:50
@Derek compressive sensing would require the analog frontend to still let through the frequencies with signal on them :) but yes, you could, given suitable spectral signal location maybe do something like a multi-tone superhet and decompose that with compressive sensing methods...
– Marcus Müller
Aug 25 at 22:52
@MarcusMüller Of course. What I was suggesting would still require some heterodyne-like front-end. The benefit is merely that you wouldn't have to know and "tune" it to the correct frequency band. (Where these techniques are more valuable is when you have a multi-band signal. You could capture all of them simultaneously no matter how spread out in the frequency range they were, as long as the total bandwidth of all the bands was less that the processing rate.)
– Derek Elkins
Aug 25 at 22:57
add a comment |Â
1
I was about to write the same answer, but luckily you were faster! Please do also point out that mixing down only works for bandpass signals: If OP has a signal that has spectral components "somewhere between 0 and 500 MHz", this doesn't help.
– Marcus Müller
Aug 25 at 9:25
@MarcusMüller There are compressive sensing techniques that depend on the actual bandwidth of the signal and not on the bandwidth range considered. For example, if you had a 100KHz signal "somewhere" in a 1GHz range, it could be isolated while doing the processing at far less than 1GHz. That said, the techniques are fairly sophisticated and probably not practical for this use case.
– Derek Elkins
Aug 25 at 22:50
@Derek compressive sensing would require the analog frontend to still let through the frequencies with signal on them :) but yes, you could, given suitable spectral signal location maybe do something like a multi-tone superhet and decompose that with compressive sensing methods...
– Marcus Müller
Aug 25 at 22:52
@MarcusMüller Of course. What I was suggesting would still require some heterodyne-like front-end. The benefit is merely that you wouldn't have to know and "tune" it to the correct frequency band. (Where these techniques are more valuable is when you have a multi-band signal. You could capture all of them simultaneously no matter how spread out in the frequency range they were, as long as the total bandwidth of all the bands was less that the processing rate.)
– Derek Elkins
Aug 25 at 22:57
1
1
I was about to write the same answer, but luckily you were faster! Please do also point out that mixing down only works for bandpass signals: If OP has a signal that has spectral components "somewhere between 0 and 500 MHz", this doesn't help.
– Marcus Müller
Aug 25 at 9:25
I was about to write the same answer, but luckily you were faster! Please do also point out that mixing down only works for bandpass signals: If OP has a signal that has spectral components "somewhere between 0 and 500 MHz", this doesn't help.
– Marcus Müller
Aug 25 at 9:25
@MarcusMüller There are compressive sensing techniques that depend on the actual bandwidth of the signal and not on the bandwidth range considered. For example, if you had a 100KHz signal "somewhere" in a 1GHz range, it could be isolated while doing the processing at far less than 1GHz. That said, the techniques are fairly sophisticated and probably not practical for this use case.
– Derek Elkins
Aug 25 at 22:50
@MarcusMüller There are compressive sensing techniques that depend on the actual bandwidth of the signal and not on the bandwidth range considered. For example, if you had a 100KHz signal "somewhere" in a 1GHz range, it could be isolated while doing the processing at far less than 1GHz. That said, the techniques are fairly sophisticated and probably not practical for this use case.
– Derek Elkins
Aug 25 at 22:50
@Derek compressive sensing would require the analog frontend to still let through the frequencies with signal on them :) but yes, you could, given suitable spectral signal location maybe do something like a multi-tone superhet and decompose that with compressive sensing methods...
– Marcus Müller
Aug 25 at 22:52
@Derek compressive sensing would require the analog frontend to still let through the frequencies with signal on them :) but yes, you could, given suitable spectral signal location maybe do something like a multi-tone superhet and decompose that with compressive sensing methods...
– Marcus Müller
Aug 25 at 22:52
@MarcusMüller Of course. What I was suggesting would still require some heterodyne-like front-end. The benefit is merely that you wouldn't have to know and "tune" it to the correct frequency band. (Where these techniques are more valuable is when you have a multi-band signal. You could capture all of them simultaneously no matter how spread out in the frequency range they were, as long as the total bandwidth of all the bands was less that the processing rate.)
– Derek Elkins
Aug 25 at 22:57
@MarcusMüller Of course. What I was suggesting would still require some heterodyne-like front-end. The benefit is merely that you wouldn't have to know and "tune" it to the correct frequency band. (Where these techniques are more valuable is when you have a multi-band signal. You could capture all of them simultaneously no matter how spread out in the frequency range they were, as long as the total bandwidth of all the bands was less that the processing rate.)
– Derek Elkins
Aug 25 at 22:57
add a comment |Â
up vote
1
down vote
Depends on the sampling-scope bandwidth.
When I first encountered a digital-scope, I wanted to explore the "aliasing". In that lab was a digital-NTSC-RF-generator (a fine beast from Phillips), and I set it to 1HZ faster than the scope's sampling rate of 200MHz. Indeed we saw a beat note on the scope's digital display of 1Hz.
Thus you may be able to down-convert from 500MHz to some lower rate. Try it.
answered Aug 25 at 10:44
analogsystemsrf
11.4k2616
1
While I do encourage just trying it and seeing what happens, there's a big difference between being 1Hz into the aliasing filter roll-off and being 450MHz beyond the nominal cutoff.
– Derek Elkins
Aug 25 at 18:15
add a comment |Â
up vote
1
down vote
Depends on the sampling-scope bandwidth.
When I first encountered a digital-scope, I wanted to explore the "aliasing". In that lab was a digital-NTSC-RF-generator (a fine beast from Phillips), and I set it to 1HZ faster than the scope's sampling rate of 200MHz. Indeed we saw a beat note on the scope's digital display of 1Hz.
Thus you may be able to down-convert from 500MHz to some lower rate. Try it.
answered Aug 25 at 10:44
analogsystemsrf
11.4k2616
1
While I do encourage just trying it and seeing what happens, there's a big difference between being 1Hz into the aliasing filter roll-off and being 450MHz beyond the nominal cutoff.
– Derek Elkins
Aug 25 at 18:15
add a comment |Â
up vote
1
down vote
up vote
1
down vote
Depends on the sampling-scope bandwidth.
When I first encountered a digital-scope, I wanted to explore the "aliasing". In that lab was a digital-NTSC-RF-generator (a fine beast from Phillips), and I set it to 1HZ faster than the scope's sampling rate of 200MHz. Indeed we saw a beat note on the scope's digital display of 1Hz.
Thus you may be able to down-convert from 500MHz to some lower rate. Try it.
answered Aug 25 at 10:44
analogsystemsrf
11.4k2616
Depends on the sampling-scope bandwidth.
When I first encountered a digital-scope, I wanted to explore the "aliasing". In that lab was a digital-NTSC-RF-generator (a fine beast from Phillips), and I set it to 1HZ faster than the scope's sampling rate of 200MHz. Indeed we saw a beat note on the scope's digital display of 1Hz.
Thus you may be able to down-convert from 500MHz to some lower rate. Try it.
answered Aug 25 at 10:44
analogsystemsrf
11.4k2616
answered Aug 25 at 10:44
analogsystemsrf
11.4k2616
answered Aug 25 at 10:44
analogsystemsrf
11.4k2616
answered Aug 25 at 10:44
analogsystemsrf
11.4k2616
11.4k2616
1
While I do encourage just trying it and seeing what happens, there's a big difference between being 1Hz into the aliasing filter roll-off and being 450MHz beyond the nominal cutoff.
– Derek Elkins
Aug 25 at 18:15
add a comment |Â
1
While I do encourage just trying it and seeing what happens, there's a big difference between being 1Hz into the aliasing filter roll-off and being 450MHz beyond the nominal cutoff.
– Derek Elkins
Aug 25 at 18:15
1
1
While I do encourage just trying it and seeing what happens, there's a big difference between being 1Hz into the aliasing filter roll-off and being 450MHz beyond the nominal cutoff.
– Derek Elkins
Aug 25 at 18:15
While I do encourage just trying it and seeing what happens, there's a big difference between being 1Hz into the aliasing filter roll-off and being 450MHz beyond the nominal cutoff.
– Derek Elkins
Aug 25 at 18:15
add a comment |Â
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6
If you had fifty orange root vegetables you would write is as "50 carrots" and not "50carrots". "M" means mega and "m" means milli.
– Andy aka
Aug 25 at 9:08
1
Is the oscilloscope digital or analog? Can you add the make and model and a link to the user manual into your question?
– Transistor
Aug 25 at 9:09
1
You might also get more specific answers if you describe where your signal comes from, what it is etc.
– Marcus Müller
Aug 25 at 9:26
1
@AndyAka So it’s just not me who is irked to the bone about that?
– winny
Aug 25 at 13:34
1
@winny there's a right way and there's a wrong way dude LOL.
– Andy aka
Aug 25 at 16:53