Hi again,
As a scientist experimenter, I tried the supported values and measured
sweep duration for 30*255 points between 200MHz and 300MHz For 255 pts
5 -> 3.93 s
10 -> 2.47 s
20 -> 1.25 s
30 -> 0.841 s
40 -> 0.611 s
60 -> 0.382 s
which is roughly invert-linear.
As a scientist experimenter part 2, I tried unsupported in-between
values. Every values I tried seems to fallback to a duration of 0.6s
/255pts, corresponding to 40 (6.2 kHz) (default for the 'pro'
?)...except for 50 which gave me 0.458s/255pts. The interpolation on the
previous duration measures gave me an IFBW between 8.2 kHz and 8.4 kHz.
Is 50 an undocumented supported value corresponding to IFBW = 8.2k or 8.3k ?
Best regards,
Le 30/03/2023 à 16:51, nanov2support a écrit :
Beware of cheap underperforming clones
As of 2023 there are many badly performing clones on the market. V2/3GHz NanoVNA uses parts like ADF4350 and AD8342 which are costly and clones have been cutting costs by using salvaged or reject parts.
See official store and look for V2 Plus4/V2 Plus4 Pro versions only to avoid getting a bad clone. We have stopped selling V2.2 versions since October 2020, so all V2 hardware that are not Plus or Plus4 are not made by us and we can not guarantee performance.
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nanoVNA v2plus4pro : IFBW register
Yohan Le Diraison 2023/03/30 21:46
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