Of course I suppose that Refl from the SSA is now redundant as you have a VNA that supersedes it.
Of course I suppose that Refl from the SSA is now redundant as you have a VNA that supersedes it.More of less correct as SVA has the reflection bridge built in and offers better directivity than the external bridge from Siglent.
Still, it still might be useful with other bridges with more ports.
You can see this in screenshots here where I used SSA3032X and SVA1015X for N-Pk and Log Mag measurements:
https://www.eevblog.com/forum/rf-microwave/antenna-project-log/
There are in fact TWO forms of EMI
One is a basic EMI that is limited to you having to use it in scanner mode over your given range
the other is REAL TIME EMI and is the 6th option in the mode list for a real time SA
That is what you are seeingCorrect.
It seems has been polished and added into the Mode menu for RTSA whereas for SSA and SVA it is a Trace Filter mode.
Latest RTSA have EMI in the Mode Menu with a different GUI layout.
For those interrested in EMi, myself included:
https://interferencetechnology.com/diy-near-field-probes-preamplifiers/
I ordered some semi rigid cable for this in China but I think its comming by long distance swimmer.
The good news is that the cost of a 250W 30dB 1GHz attenuator will cost me considerably less than $100
Anyway, any tips, unusual ways of using the SVA and its functions is always a welcome topic
For those interrested in EMi, myself included:
https://interferencetechnology.com/diy-near-field-probes-preamplifiers/
I ordered some semi rigid cable for this in China but I think its comming by long distance swimmer.
For those interrested in EMi, myself included:
https://interferencetechnology.com/diy-near-field-probes-preamplifiers/
I ordered some semi rigid cable for this in China but I think its comming by long distance swimmer.I’m not entirely sure you need a preamp with EMI probes more so probes that have been properly characterised.
The internal SSA/SVA 20dB preamp and the unit’s inherent sensitivity is sufficient to work well with a range of passive EMI probes.
So what exactly is with the 'built in' reflection bridge?
Was the SSA just soft disabled to make someone get an external one?
AKA this part?
https://siglentna.com/product/rb3x25/
I was under the impression they all needed an external bridge till you brought this up
Edit: For clarity before I even opened the thing up physically, I was expecting a SSA that needed a bridge and this reminded me of that question since once opened there it was all interconnected already internally and was confusing when reading one thing and seeing another which in turn lead us down to cross flash
The good news is that the cost of a 250W 30dB 1GHz attenuator will cost me considerably less than $100
Anyway, any tips, unusual ways of using the SVA and its functions is always a welcome topic
Both of those would be interesting
My assumption is feedlines are part of the antenna system so they should be included in VNA tests at the final installation and as the SVA models are so portable this is simple to accomplish.
Have fun, I certainly have while getting to know the couple of SVA's I've had.
For those interrested in EMi, myself included:
https://interferencetechnology.com/diy-near-field-probes-preamplifiers/
I ordered some semi rigid cable for this in China but I think its comming by long distance swimmer.I’m not entirely sure you need a preamp with EMI probes more so probes that have been properly characterised.
The internal SSA/SVA 20dB preamp and the unit’s inherent sensitivity is sufficient to work well with a range of passive EMI probes.
For those interrested in EMi, myself included:
https://interferencetechnology.com/diy-near-field-probes-preamplifiers/
I ordered some semi rigid cable for this in China but I think its comming by long distance swimmer.I’m not entirely sure you need a preamp with EMI probes more so probes that have been properly characterised.
The internal SSA/SVA 20dB preamp and the unit’s inherent sensitivity is sufficient to work well with a range of passive EMI probes.I've got a few sets of these in for customers which I believe are fair value for the type 7 set:
https://www.aliexpress.com/item/33029566295.html?spm=a2g0s.9042311.0.0.76394c4dvHkz2M
A dumb experiment ...
Just took a screen shot of an Open Port1 (TG Source) - nothing connected!
Would be interesting to see what others are getting with same Open Port - just to see 'how consistent Siglent SVA manufacturing really is
In theory - all should be identical - but most likely will not be depending on tolerances and calibration or lack of it.
Post you screenshot if you can
For those interrested in EMi, myself included:
https://interferencetechnology.com/diy-near-field-probes-preamplifiers/
I ordered some semi rigid cable for this in China but I think its comming by long distance swimmer.I’m not entirely sure you need a preamp with EMI probes more so probes that have been properly characterised.
The internal SSA/SVA 20dB preamp and the unit’s inherent sensitivity is sufficient to work well with a range of passive EMI probes.I've got a few sets of these in for customers which I believe are fair value for the type 7 set:
https://www.aliexpress.com/item/33029566295.html?spm=a2g0s.9042311.0.0.76394c4dvHkz2M
Do you and hedgerog have a few different sets to compare with for that sva demo? I wonder how they would compare to tek's and more named branded ones
A dumb experiment ...
Just took a screen shot of an Open Port1 (TG Source) - nothing connected!
Would be interesting to see what others are getting with same Open Port - just to see 'how consistent Siglent SVA manufacturing really is
In theory - all should be identical - but most likely will not be depending on tolerances and calibration or lack of it.
Post you screenshot if you canWill do tomorrow.......oh hell....later today !
Use R+JX as that's what you mostly use for antenna work.
Also you can crank up the measurement points to 751 IIRC for more detail at the expense of a bit slower sweep.
Oh and change the display screenshot to normal.
A dumb experiment ...
Just took a screen shot of an Open Port1 (TG Source) - nothing connected!
Would be interesting to see what others are getting with same Open Port - just to see 'how consistent Siglent SVA manufacturing really is
In theory - all should be identical - but most likely will not be depending on tolerances and calibration or lack of it.
Post you screenshot if you canWill do tomorrow.......oh hell....later today !
Use R+JX as that's what you mostly use for antenna work.
Also you can crank up the measurement points to 751 IIRC for more detail at the expense of a bit slower sweep.
Oh and change the display screenshot to normal.
Thanks for tip ...
Does not make much difference with 751 points - in terms of processing / sweep time - perhaaps it somehow knows its OPEN and nothing to process
BTW - is there an 'eject USB' option?? could not see anything & don't like pulling out USB if still mounted