Thanks Frank!
toggle quoted message
Show quoted text
-----Original Message----- From: [email protected] < [email protected]> On Behalf Of Frank Howell Sent: Wednesday, October 13, 2021 7:32 AM To: [email protected]Subject: Re: [tinysa] Filters Hi Jim, Look for books by Bob Witte or Joe Carr. Both can be found used cheaply. There are others but these two are very well organized and written. 73, Frank K4FMH --- Frank M. Howell, PhD Ridgeland, MS frankmhowell (at) hotmail.com ---
|
Hi Jim,
Look for books by Bob Witte or Joe Carr. Both can be found used cheaply. There are others but these two are very well organized and written.
73,
Frank
K4FMH
---
Frank M. Howell, PhD
Ridgeland, MS
frankmhowell (at) hotmail.com
---
|
For the original nanoVNA (nanovna-users group) look on the group Wiki for the current “approved” vendors. The list changes from time to time and there are a bunch of clones out there which, for various readons, you don’t want.
DaveD
toggle quoted message
Show quoted text
On Oct 12, 2021, at 18:48, James Belcher <theburp@...> wrote:
?
Dave,
?
Just went to Amazon, and there seems to be a range of nanonVNAs for sale.? I would probably opt towards a higher end unit, do you have a suggestion?
?
?
One of the nanoVNAs is what you want to do that. There are a couple of groups.io groups for those. I’m a co-owner of the nanovna-users group and if you join that group there is a ton of information about using those to do various things.
There is also the nanovna-f group which deals with another nanovna, but I know less about those than I do about the one associated with the nanovna-users group.
On Oct 12, 2021, at 18:23, James Belcher <theburp@...> wrote:
?
Thanks Dave,
?
Can you recommend a book for the types of measurement I want to do.? Evan suggested that I am using the wrong instrument.
?
Jim
?
?
Morris Engelson’s book on spec ans from the Tektronix Measurenents series is good, and downloadable from the TekWiki site. Also, Dan Welch’s book from the Tektronix Concepts series is good and also downloadable from TekWiki.
On Oct 12, 2021, at 17:48, James Belcher <theburp@...> wrote:
?
Thanks Evan and Clyde,
?
I would like to read up on SAs but can find no decent book on them on Amazon.? If you have a reference I would be interested.
?
That being said, I do not really plan to do much in the RF range, mostly in the audio range for study.
?
I actually have a very strong back ground in electronics.? Its just that I have never spent any real time in this kind of electronics, and wish to improve my knowledge.
?
The idea was to build a simple filter (bandpass, band reject etc) as low to moderate frequency mainly to learn to use the equipment.
?
Jim
?
?
Hi James,
There are two different "nano" based devices that are cheap and available for RF and RF circuits measurement.? Each has its own strengths and weaknesses.? To simplify (ALWAYS dangerous, so please take with a grain of salt); the NanoVNA is good at measuring
circuits that do not supply their own RF and the TinySA is used to measure outputs of circuits that do generate their own RF.
For what you are stating that you want to do, the NanoVNA is the best tool.? You can use the TinySA to do the measurements per the video from Erik.? It takes more fiddling and may be less accurate.? It also takes an external noise source to generate the RF
for the TinySA to measure.? The RF generator is built into the NanoVNA and is calibrated across the frequency range of measurement within the capabilities of the device..
By the same token, you can use the NanoVNA to do spectrum measurements with less accuracy and more fiddling.
I would have less confidence in the measurements that the device was not designed to do.? With that said, if you understand the details of the limits of the measurement device, you can use it.
I would suggest that you read up on spectrum analyzers and vector network analyzers to get an understanding of how they work.? This is more so as you are studying electronics, and a deeper understanding of how the measurements are made will help.
Above are just suggestions.? Have fun learning about RF circuits and measurements.
73
Evan
AC9TU
|
toggle quoted message
Show quoted text
On Oct 12, 2021, at 18:45, James Belcher <theburp@...> wrote:
?
Dave,
?
Do you have a link to that group?
?
Michael,
?
Sounds like a good suggestion, except that I do not own or use any Apple products.
?
?
One of the nanoVNAs is what you want to do that. There are a couple of groups.io groups for those. I’m a co-owner of the nanovna-users group and if you join that group there is a ton of information about using those to do various things.
There is also the nanovna-f group which deals with another nanovna, but I know less about those than I do about the one associated with the nanovna-users group.
On Oct 12, 2021, at 18:23, James Belcher <theburp@...> wrote:
?
Thanks Dave,
?
Can you recommend a book for the types of measurement I want to do.? Evan suggested that I am using the wrong instrument.
?
Jim
?
?
Morris Engelson’s book on spec ans from the Tektronix Measurenents series is good, and downloadable from the TekWiki site. Also, Dan Welch’s book from the Tektronix Concepts series is good and also downloadable from TekWiki.
On Oct 12, 2021, at 17:48, James Belcher <theburp@...> wrote:
?
Thanks Evan and Clyde,
?
I would like to read up on SAs but can find no decent book on them on Amazon.? If you have a reference I would be interested.
?
That being said, I do not really plan to do much in the RF range, mostly in the audio range for study.
?
I actually have a very strong back ground in electronics.? Its just that I have never spent any real time in this kind of electronics, and wish to improve my knowledge.
?
The idea was to build a simple filter (bandpass, band reject etc) as low to moderate frequency mainly to learn to use the equipment.
?
Jim
?
?
Hi James,
There are two different "nano" based devices that are cheap and available for RF and RF circuits measurement.? Each has its own strengths and weaknesses.? To simplify (ALWAYS dangerous, so please take with a grain of salt); the NanoVNA is good at measuring
circuits that do not supply their own RF and the TinySA is used to measure outputs of circuits that do generate their own RF.
For what you are stating that you want to do, the NanoVNA is the best tool.? You can use the TinySA to do the measurements per the video from Erik.? It takes more fiddling and may be less accurate.? It also takes an external noise source to generate the RF
for the TinySA to measure.? The RF generator is built into the NanoVNA and is calibrated across the frequency range of measurement within the capabilities of the device..
By the same token, you can use the NanoVNA to do spectrum measurements with less accuracy and more fiddling.
I would have less confidence in the measurements that the device was not designed to do.? With that said, if you understand the details of the limits of the measurement device, you can use it.
I would suggest that you read up on spectrum analyzers and vector network analyzers to get an understanding of how they work.? This is more so as you are studying electronics, and a deeper understanding of how the measurements are made will help.
Above are just suggestions.? Have fun learning about RF circuits and measurements.
73
Evan
AC9TU
|
I bought my TinySA on Amazon, and it checked out as real according to the test tinySA asks you to do.
?
I will check out R&L.
?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]>
On Behalf Of Steven Reed
Sent: Wednesday, October 13, 2021 6:50 AM
To: [email protected]
Subject: Re: [tinysa] Filters
?
The last time I looked, virtually all of the NanoVNAs being sold on Amazon were knockoffs.? If you’re in the US, suggest R&L Electronics.
?
Dave,
?
Just went to Amazon, and there seems to be a range of nanonVNAs for sale.? I would probably opt towards a higher end unit, do you have a suggestion?
?
?
One of the nanoVNAs is what you want to do that. There are a couple of groups.io groups for those. I’m a co-owner of the nanovna-users group and if you join that group there is a ton of information about using those to do various things.
There is also the nanovna-f group which deals with another nanovna, but I know less about those than I do about the one associated with the nanovna-users group.
?
On Oct 12, 2021, at 18:23, James Belcher <theburp@...> wrote:
?
Thanks Dave,
?
Can you recommend a book for the types of measurement I want to do.? Evan suggested that I am using the wrong instrument.
?
Jim
?
?
Morris Engelson’s book on spec ans from the Tektronix Measurenents series is good, and downloadable from the TekWiki site. Also, Dan Welch’s book from the Tektronix Concepts series is good and also downloadable from TekWiki.
?
On Oct 12, 2021, at 17:48, James Belcher <theburp@...> wrote:
?
Thanks Evan and Clyde,
?
I would like to read up on SAs but can find no decent book on them on Amazon.? If you have a reference I would be interested.
?
That being said, I do not really plan to do much in the RF range, mostly in the audio range for study.
?
I actually have a very strong back ground in electronics.? Its just that I have never spent any real time in this kind of electronics, and wish to improve my knowledge.
?
The idea was to build a simple filter (bandpass, band reject etc) as low to moderate frequency mainly to learn to use the equipment.
?
Jim
?
?
Hi James,
There are two different "nano" based devices that are cheap and available for RF and RF circuits measurement.? Each has its own strengths and weaknesses.? To simplify (ALWAYS dangerous, so please take with a grain of salt); the NanoVNA is good at measuring
circuits that do not supply their own RF and the TinySA is used to measure outputs of circuits that do generate their own RF.
For what you are stating that you want to do, the NanoVNA is the best tool.? You can use the TinySA to do the measurements per the video from Erik.? It takes more fiddling and may be less accurate.? It also takes an external noise source to generate the RF
for the TinySA to measure.? The RF generator is built into the NanoVNA and is calibrated across the frequency range of measurement within the capabilities of the device..
By the same token, you can use the NanoVNA to do spectrum measurements with less accuracy and more fiddling.
I would have less confidence in the measurements that the device was not designed to do.? With that said, if you understand the details of the limits of the measurement device, you can use it.
I would suggest that you read up on spectrum analyzers and vector network analyzers to get an understanding of how they work.? This is more so as you are studying electronics, and a deeper understanding of how the measurements are made will help.
Above are just suggestions.? Have fun learning about RF circuits and measurements.
73
Evan
AC9TU
|
The last time I looked, virtually all of the NanoVNAs being sold on Amazon were knockoffs.? If you’re in the US, suggest R&L Electronics.
?
Dave,
?
Just went to Amazon, and there seems to be a range of nanonVNAs for sale.? I would probably opt towards a higher end unit, do you have a suggestion?
?
toggle quoted message
Show quoted text
From: [email protected] < [email protected]> On Behalf Of
Dave Daniel
Sent: Wednesday, October 13, 2021 6:36 AM
To: [email protected]
Subject: Re: [tinysa] Filters
?
One of the nanoVNAs is what you want to do that. There are a couple of groups.io groups for those. I’m a co-owner of the nanovna-users group and if you join that group there is a ton of information about using those to
do various things. There is also the nanovna-f group which deals with another nanovna, but I know less about those than I do about the one associated with the nanovna-users group.
?
On Oct 12, 2021, at 18:23, James Belcher <theburp@...> wrote:
?
Thanks Dave,
?
Can you recommend a book for the types of measurement I want to do.? Evan suggested that I am using the wrong instrument.
?
Jim
?
?
Morris Engelson’s book on spec ans from the Tektronix Measurenents series is good, and downloadable from the TekWiki site. Also, Dan Welch’s book from the Tektronix Concepts series is good and also downloadable from TekWiki.
On Oct 12, 2021, at 17:48, James Belcher <theburp@...> wrote:
?
Thanks Evan and Clyde,
?
I would like to read up on SAs but can find no decent book on them on Amazon.? If you have a reference I would be interested.
?
That being said, I do not really plan to do much in the RF range, mostly in the audio range for study.
?
I actually have a very strong back ground in electronics.? Its just that I have never spent any real time in this kind of electronics, and wish to improve my knowledge.
?
The idea was to build a simple filter (bandpass, band reject etc) as low to moderate frequency mainly to learn to use the equipment.
?
Jim
?
?
Hi James,
There are two different "nano" based devices that are cheap and available for RF and RF circuits measurement.? Each has its own strengths and weaknesses.? To simplify (ALWAYS dangerous, so please take with a grain of salt); the NanoVNA is good at measuring
circuits that do not supply their own RF and the TinySA is used to measure outputs of circuits that do generate their own RF.
For what you are stating that you want to do, the NanoVNA is the best tool.? You can use the TinySA to do the measurements per the video from Erik.? It takes more fiddling and may be less accurate.? It also takes an external noise source to generate the RF
for the TinySA to measure.? The RF generator is built into the NanoVNA and is calibrated across the frequency range of measurement within the capabilities of the device..
By the same token, you can use the NanoVNA to do spectrum measurements with less accuracy and more fiddling.
I would have less confidence in the measurements that the device was not designed to do.? With that said, if you understand the details of the limits of the measurement device, you can use it.
I would suggest that you read up on spectrum analyzers and vector network analyzers to get an understanding of how they work.? This is more so as you are studying electronics, and a deeper understanding of how the measurements are made will help.
Above are just suggestions.? Have fun learning about RF circuits and measurements.
73
Evan
AC9TU
|
Dave,
?
Just went to Amazon, and there seems to be a range of nanonVNAs for sale.? I would probably opt towards a higher end unit, do you have a suggestion?
?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]>
On Behalf Of Dave Daniel
Sent: Wednesday, October 13, 2021 6:36 AM
To: [email protected]
Subject: Re: [tinysa] Filters
?
One of the nanoVNAs is what you want to do that. There are a couple of groups.io groups for those. I’m a co-owner of the nanovna-users group and if you join that group there is a ton of information about using those to do various things.
There is also the nanovna-f group which deals with another nanovna, but I know less about those than I do about the one associated with the nanovna-users group.
On Oct 12, 2021, at 18:23, James Belcher <theburp@...> wrote:
?
Thanks Dave,
?
Can you recommend a book for the types of measurement I want to do.? Evan suggested that I am using the wrong instrument.
?
Jim
?
?
Morris Engelson’s book on spec ans from the Tektronix Measurenents series is good, and downloadable from the TekWiki site. Also, Dan Welch’s book from the Tektronix Concepts series is good and also downloadable from TekWiki.
On Oct 12, 2021, at 17:48, James Belcher <theburp@...> wrote:
?
Thanks Evan and Clyde,
?
I would like to read up on SAs but can find no decent book on them on Amazon.? If you have a reference I would be interested.
?
That being said, I do not really plan to do much in the RF range, mostly in the audio range for study.
?
I actually have a very strong back ground in electronics.? Its just that I have never spent any real time in this kind of electronics, and wish to improve my knowledge.
?
The idea was to build a simple filter (bandpass, band reject etc) as low to moderate frequency mainly to learn to use the equipment.
?
Jim
?
?
Hi James,
There are two different "nano" based devices that are cheap and available for RF and RF circuits measurement.? Each has its own strengths and weaknesses.? To simplify (ALWAYS dangerous, so please take with a grain of salt); the NanoVNA is good at measuring
circuits that do not supply their own RF and the TinySA is used to measure outputs of circuits that do generate their own RF.
For what you are stating that you want to do, the NanoVNA is the best tool.? You can use the TinySA to do the measurements per the video from Erik.? It takes more fiddling and may be less accurate.? It also takes an external noise source to generate the RF
for the TinySA to measure.? The RF generator is built into the NanoVNA and is calibrated across the frequency range of measurement within the capabilities of the device..
By the same token, you can use the NanoVNA to do spectrum measurements with less accuracy and more fiddling.
I would have less confidence in the measurements that the device was not designed to do.? With that said, if you understand the details of the limits of the measurement device, you can use it.
I would suggest that you read up on spectrum analyzers and vector network analyzers to get an understanding of how they work.? This is more so as you are studying electronics, and a deeper understanding of how the measurements are made will help.
Above are just suggestions.? Have fun learning about RF circuits and measurements.
73
Evan
AC9TU
|
Dave,
?
Do you have a link to that group?
?
Michael,
?
Sounds like a good suggestion, except that I do not own or use any Apple products.
?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]>
On Behalf Of Dave Daniel
Sent: Wednesday, October 13, 2021 6:36 AM
To: [email protected]
Subject: Re: [tinysa] Filters
?
One of the nanoVNAs is what you want to do that. There are a couple of groups.io groups for those. I’m a co-owner of the nanovna-users group and if you join that group there is a ton of information about using those to do various things.
There is also the nanovna-f group which deals with another nanovna, but I know less about those than I do about the one associated with the nanovna-users group.
On Oct 12, 2021, at 18:23, James Belcher <theburp@...> wrote:
?
Thanks Dave,
?
Can you recommend a book for the types of measurement I want to do.? Evan suggested that I am using the wrong instrument.
?
Jim
?
?
Morris Engelson’s book on spec ans from the Tektronix Measurenents series is good, and downloadable from the TekWiki site. Also, Dan Welch’s book from the Tektronix Concepts series is good and also downloadable from TekWiki.
On Oct 12, 2021, at 17:48, James Belcher <theburp@...> wrote:
?
Thanks Evan and Clyde,
?
I would like to read up on SAs but can find no decent book on them on Amazon.? If you have a reference I would be interested.
?
That being said, I do not really plan to do much in the RF range, mostly in the audio range for study.
?
I actually have a very strong back ground in electronics.? Its just that I have never spent any real time in this kind of electronics, and wish to improve my knowledge.
?
The idea was to build a simple filter (bandpass, band reject etc) as low to moderate frequency mainly to learn to use the equipment.
?
Jim
?
?
Hi James,
There are two different "nano" based devices that are cheap and available for RF and RF circuits measurement.? Each has its own strengths and weaknesses.? To simplify (ALWAYS dangerous, so please take with a grain of salt); the NanoVNA is good at measuring
circuits that do not supply their own RF and the TinySA is used to measure outputs of circuits that do generate their own RF.
For what you are stating that you want to do, the NanoVNA is the best tool.? You can use the TinySA to do the measurements per the video from Erik.? It takes more fiddling and may be less accurate.? It also takes an external noise source to generate the RF
for the TinySA to measure.? The RF generator is built into the NanoVNA and is calibrated across the frequency range of measurement within the capabilities of the device..
By the same token, you can use the NanoVNA to do spectrum measurements with less accuracy and more fiddling.
I would have less confidence in the measurements that the device was not designed to do.? With that said, if you understand the details of the limits of the measurement device, you can use it.
I would suggest that you read up on spectrum analyzers and vector network analyzers to get an understanding of how they work.? This is more so as you are studying electronics, and a deeper understanding of how the measurements are made will help.
Above are just suggestions.? Have fun learning about RF circuits and measurements.
73
Evan
AC9TU
|
I recommend the AudioTools suite of tools from Apple iOS for doing all kinds of audio measurements. The senior developer of the product was the chief engineer of the audio line of test products from Sencore Equipment when they were in business. I recommend acquiring the external audio interface to use with the app. The suite continues to grow and has a huge user base in the US of audio, noise and acoustic professionals. Very affordable IMO.
Michael
WRHS965
KE8PLM
Sent from my iMobile
|
One of the nanoVNAs is what you want to do that. There are a couple of groups.io groups for those. I’m a co-owner of the nanovna-users group and if you join that group there is a ton of information about using those to do various things. There is also the nanovna-f group which deals with another nanovna, but I know less about those than I do about the one associated with the nanovna-users group.
DaveD
toggle quoted message
Show quoted text
On Oct 12, 2021, at 18:23, James Belcher <theburp@...> wrote:
?
Thanks Dave,
?
Can you recommend a book for the types of measurement I want to do.? Evan suggested that I am using the wrong instrument.
?
Jim
?
?
Morris Engelson’s book on spec ans from the Tektronix Measurenents series is good, and downloadable from the TekWiki site. Also, Dan Welch’s book from the Tektronix Concepts series is good and also downloadable from TekWiki.
On Oct 12, 2021, at 17:48, James Belcher <theburp@...> wrote:
?
Thanks Evan and Clyde,
?
I would like to read up on SAs but can find no decent book on them on Amazon.? If you have a reference I would be interested.
?
That being said, I do not really plan to do much in the RF range, mostly in the audio range for study.
?
I actually have a very strong back ground in electronics.? Its just that I have never spent any real time in this kind of electronics, and wish to improve my knowledge.
?
The idea was to build a simple filter (bandpass, band reject etc) as low to moderate frequency mainly to learn to use the equipment.
?
Jim
?
?
Hi James,
There are two different "nano" based devices that are cheap and available for RF and RF circuits measurement.? Each has its own strengths and weaknesses.? To simplify (ALWAYS dangerous, so please take with a grain of salt); the NanoVNA is good at measuring
circuits that do not supply their own RF and the TinySA is used to measure outputs of circuits that do generate their own RF.
For what you are stating that you want to do, the NanoVNA is the best tool.? You can use the TinySA to do the measurements per the video from Erik.? It takes more fiddling and may be less accurate.? It also takes an external noise source to generate the RF
for the TinySA to measure.? The RF generator is built into the NanoVNA and is calibrated across the frequency range of measurement within the capabilities of the device..
By the same token, you can use the NanoVNA to do spectrum measurements with less accuracy and more fiddling.
I would have less confidence in the measurements that the device was not designed to do.? With that said, if you understand the details of the limits of the measurement device, you can use it.
I would suggest that you read up on spectrum analyzers and vector network analyzers to get an understanding of how they work.? This is more so as you are studying electronics, and a deeper understanding of how the measurements are made will help.
Above are just suggestions.? Have fun learning about RF circuits and measurements.
73
Evan
AC9TU
|
Thanks Dave,
?
Can you recommend a book for the types of measurement I want to do.? Evan suggested that I am using the wrong instrument.
?
Jim
?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]>
On Behalf Of Dave Daniel
Sent: Wednesday, October 13, 2021 6:07 AM
To: [email protected]
Subject: Re: [tinysa] Filters
?
Morris Engelson’s book on spec ans from the Tektronix Measurenents series is good, and downloadable from the TekWiki site. Also, Dan Welch’s book from the Tektronix Concepts series is good and also downloadable from TekWiki.
On Oct 12, 2021, at 17:48, James Belcher <theburp@...> wrote:
?
Thanks Evan and Clyde,
?
I would like to read up on SAs but can find no decent book on them on Amazon.? If you have a reference I would be interested.
?
That being said, I do not really plan to do much in the RF range, mostly in the audio range for study.
?
I actually have a very strong back ground in electronics.? Its just that I have never spent any real time in this kind of electronics, and wish to improve my knowledge.
?
The idea was to build a simple filter (bandpass, band reject etc) as low to moderate frequency mainly to learn to use the equipment.
?
Jim
?
?
Hi James,
There are two different "nano" based devices that are cheap and available for RF and RF circuits measurement.? Each has its own strengths and weaknesses.? To simplify (ALWAYS dangerous, so please take with a grain of salt); the NanoVNA is good at measuring
circuits that do not supply their own RF and the TinySA is used to measure outputs of circuits that do generate their own RF.
For what you are stating that you want to do, the NanoVNA is the best tool.? You can use the TinySA to do the measurements per the video from Erik.? It takes more fiddling and may be less accurate.? It also takes an external noise source to generate the RF
for the TinySA to measure.? The RF generator is built into the NanoVNA and is calibrated across the frequency range of measurement within the capabilities of the device..
By the same token, you can use the NanoVNA to do spectrum measurements with less accuracy and more fiddling.
I would have less confidence in the measurements that the device was not designed to do.? With that said, if you understand the details of the limits of the measurement device, you can use it.
I would suggest that you read up on spectrum analyzers and vector network analyzers to get an understanding of how they work.? This is more so as you are studying electronics, and a deeper understanding of how the measurements are made will help.
Above are just suggestions.? Have fun learning about RF circuits and measurements.
73
Evan
AC9TU
|
Morris Engelson’s book on spec ans from the Tektronix Measurenents series is good, and downloadable from the TekWiki site. Also, Dan Welch’s book from the Tektronix Concepts series is good and also downloadable from TekWiki.
DaveD
toggle quoted message
Show quoted text
On Oct 12, 2021, at 17:48, James Belcher <theburp@...> wrote:
?
Thanks Evan and Clyde,
?
I would like to read up on SAs but can find no decent book on them on Amazon.? If you have a reference I would be interested.
?
That being said, I do not really plan to do much in the RF range, mostly in the audio range for study.
?
I actually have a very strong back ground in electronics.? Its just that I have never spent any real time in this kind of electronics, and wish to improve my knowledge.
?
The idea was to build a simple filter (bandpass, band reject etc) as low to moderate frequency mainly to learn to use the equipment.
?
Jim
?
?
Hi James,
There are two different "nano" based devices that are cheap and available for RF and RF circuits measurement.? Each has its own strengths and weaknesses.? To simplify (ALWAYS dangerous, so please take with a grain of salt); the NanoVNA is good at measuring
circuits that do not supply their own RF and the TinySA is used to measure outputs of circuits that do generate their own RF.
For what you are stating that you want to do, the NanoVNA is the best tool.? You can use the TinySA to do the measurements per the video from Erik.? It takes more fiddling and may be less accurate.? It also takes an external noise source to generate the RF
for the TinySA to measure.? The RF generator is built into the NanoVNA and is calibrated across the frequency range of measurement within the capabilities of the device..
By the same token, you can use the NanoVNA to do spectrum measurements with less accuracy and more fiddling.
I would have less confidence in the measurements that the device was not designed to do.? With that said, if you understand the details of the limits of the measurement device, you can use it.
I would suggest that you read up on spectrum analyzers and vector network analyzers to get an understanding of how they work.? This is more so as you are studying electronics, and a deeper understanding of how the measurements are made will help.
Above are just suggestions.? Have fun learning about RF circuits and measurements.
73
Evan
AC9TU
|
Thanks Evan and Clyde,
?
I would like to read up on SAs but can find no decent book on them on Amazon.? If you have a reference I would be interested.
?
That being said, I do not really plan to do much in the RF range, mostly in the audio range for study.
?
I actually have a very strong back ground in electronics.? Its just that I have never spent any real time in this kind of electronics, and wish to improve my knowledge.
?
The idea was to build a simple filter (bandpass, band reject etc) as low to moderate frequency mainly to learn to use the equipment.
?
Jim
?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]>
On Behalf Of Evan Hand
Sent: Tuesday, October 12, 2021 9:26 PM
To: [email protected]
Subject: Re: [tinysa] Filters
?
Hi James,
There are two different "nano" based devices that are cheap and available for RF and RF circuits measurement.? Each has its own strengths and weaknesses.? To simplify (ALWAYS dangerous, so please take with a grain of salt); the NanoVNA is good at measuring
circuits that do not supply their own RF and the TinySA is used to measure outputs of circuits that do generate their own RF.
For what you are stating that you want to do, the NanoVNA is the best tool.? You can use the TinySA to do the measurements per the video from Erik.? It takes more fiddling and may be less accurate.? It also takes an external noise source to generate the RF
for the TinySA to measure.? The RF generator is built into the NanoVNA and is calibrated across the frequency range of measurement within the capabilities of the device..
By the same token, you can use the NanoVNA to do spectrum measurements with less accuracy and more fiddling.
I would have less confidence in the measurements that the device was not designed to do.? With that said, if you understand the details of the limits of the measurement device, you can use it.
I would suggest that you read up on spectrum analyzers and vector network analyzers to get an understanding of how they work.? This is more so as you are studying electronics, and a deeper understanding of how the measurements are made will help.
Above are just suggestions.? Have fun learning about RF circuits and measurements.
73
Evan
AC9TU
|
Hi James,
There are two different "nano" based devices that are cheap and available for RF and RF circuits measurement.? Each has its own strengths and weaknesses.? To simplify (ALWAYS dangerous, so please take with a grain of salt); the NanoVNA is good at measuring circuits that do not supply their own RF and the TinySA is used to measure outputs of circuits that do generate their own RF.
For what you are stating that you want to do, the NanoVNA is the best tool.? You can use the TinySA to do the measurements per the video from Erik.? It takes more fiddling and may be less accurate.? It also takes an external noise source to generate the RF for the TinySA to measure.? The RF generator is built into the NanoVNA and is calibrated across the frequency range of measurement within the capabilities of the device..
By the same token, you can use the NanoVNA to do spectrum measurements with less accuracy and more fiddling.
I would have less confidence in the measurements that the device was not designed to do.? With that said, if you understand the details of the limits of the measurement device, you can use it.
I would suggest that you read up on spectrum analyzers and vector network analyzers to get an understanding of how they work.? This is more so as you are studying electronics, and a deeper understanding of how the measurements are made will help.
Above are just suggestions.? Have fun learning about RF circuits and measurements.
73
Evan
AC9TU
|
|
|
On Mon, Oct 11, 2021 at 01:59 PM, <theburp@...> wrote:
bought a TinySA hoping I could use it to get a freq curve on simple filters
Why just not to get a proper tool like nanoVNA?
|
Thanks, Erik. It was just an observation, and now I have an
explanation.
On 10/10/2021 10:08 PM, Erik Kaashoek
wrote:
toggle quoted message
Show quoted text
When you enable cal output you get TWO signals from the high
output.
1: The low frequency cal output (with harmonics)
2: The leakage from the LOW INPUT mode LO
Once you enable HIGH INPUT the LO is switched off and the "noise"
and the interference (leading to small level fluctuations)
disappears
This is normal behavior and has no impact on the power level
calibration using the cal output
--
------------------------------------------
For more info on the tinySA go to
|
When you enable cal output you get TWO signals from the high output. 1: The low frequency cal output (with harmonics) 2: The leakage from the LOW INPUT mode LO Once you enable HIGH INPUT the LO is switched off and the "noise" and the interference (leading to small level fluctuations) disappears This is normal behavior and has no impact on the power level calibration using the cal output --
------------------------------------------
For more info on the tinySA go to https://tinysa.org/wiki/
|
Have a look here:? --
------------------------------------------
For more info on the tinySA go to https://tinysa.org/wiki/
|
Hello, I am a noob to SAs and would like some advice. I am studying filters in an electronics course and bought a TinySA hoping I could use it to get a freq curve on simple filters, such a bandpadd etc at fairly low freqs.
Could anyone tell me how to do this?
Thanks
|
K4FMH