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There is no mention of its measurement accuracy in the specs nor in the comparison table against the higher priced units from other vendors. Accuracy is a diff

There is no mention of its measurement accuracy in the specs nor in the comparison table against the higher priced units from other vendors. Accuracy is a different animal from the dynamic range in that table and the repeatability given on the VNA6000 home page. So that begs the question: how accurate is it and how does its accuracy stack up against other options? Edit: spelling.

avian 4y ago
Accuracy will largely depend on calibration standards used. A good set of those that goes up to 6 GHz will cost many times the cost of this device.
- maidchan375 4y ago
  This is true. The VNA can only provide repeatability and precision, and it's the calibration kit's job to provide accuracy.
- MegaDeKay 4y ago
  That's part of it, but linearity and the device's own return loss (a good cal kit can only do so much) are also substantial factors.
  - avian 4y ago
    Is linearity a problem in these sorts of devices? I'm not sure where it would come into play. I'm assuming this does IF processing in software and it doesn't have a classical detector where linearity would be a problem. Yes, return loss and directivity of the bridges/directional couplers in there is a big factor. It directly corresponds to usable dynamic range after calibration. If your directivity is only 20 dB at 6 GHz, 110 dB of dynamic range at the detector won't do anything for the quality of the final measurement. So an honest way of specifying dynamic range would be for a fully calibrated device. Giving that they say it has 110 dB, I don't think that's the case here.
  - maidchan375 4y ago
    The linearity is shown in the "Example measurements" graphs
gautamm1 4y ago
Priced at $790, it seems grossly overpriced compared to the LiteVNA64 at $125, with similar specs (50kHz-6.3GHz)
- maidchan375 4y ago
  That is a clone of the older V2 hardware, with specs exaggerated and much more noisy, according to here: https://nanorfe.com/nanovna-v2.html#comparisons https://nanorfe.com/nanovna-v2.html#comparisons
ezconnect 4y ago
It will be tested by youtubers and we will get a bit better view if we buy 2nd hand gears or this one.
maidchan375 4y ago
The earlier version, the V2Plus4, has been compared with professional instruments by many users (linked on the website), so this one being higher end should be at least as good.

avian 4y ago

Accuracy will largely depend on calibration standards used. A good set of those that goes up to 6 GHz will cost many times the cost of this device.

maidchan375 4y ago
This is true. The VNA can only provide repeatability and precision, and it's the calibration kit's job to provide accuracy.
MegaDeKay 4y ago
That's part of it, but linearity and the device's own return loss (a good cal kit can only do so much) are also substantial factors.
- avian 4y ago
  Is linearity a problem in these sorts of devices? I'm not sure where it would come into play. I'm assuming this does IF processing in software and it doesn't have a classical detector where linearity would be a problem. Yes, return loss and directivity of the bridges/directional couplers in there is a big factor. It directly corresponds to usable dynamic range after calibration. If your directivity is only 20 dB at 6 GHz, 110 dB of dynamic range at the detector won't do anything for the quality of the final measurement. So an honest way of specifying dynamic range would be for a fully calibrated device. Giving that they say it has 110 dB, I don't think that's the case here.
- maidchan375 4y ago
  The linearity is shown in the "Example measurements" graphs

gautamm1 4y ago

Priced at $790, it seems grossly overpriced compared to the LiteVNA64 at $125, with similar specs (50kHz-6.3GHz)

maidchan375 4y ago
That is a clone of the older V2 hardware, with specs exaggerated and much more noisy, according to here: https://nanorfe.com/nanovna-v2.html#comparisons https://nanorfe.com/nanovna-v2.html#comparisons

ezconnect 4y ago

It will be tested by youtubers and we will get a bit better view if we buy 2nd hand gears or this one.

maidchan375 4y ago

The earlier version, the V2Plus4, has been compared with professional instruments by many users (linked on the website), so this one being higher end should be at least as good.