开云体育

Hello All:

New tinySA user here, (I have a NanoVNA too).? My tinySA was from R&L, so should be real.?
I've had the unit for 3 weeks, worked well.? ?However, I have an odd issue when I load the latest SW, 1.1-74 or 75.?

Everything appears to work as expected, except that the Self Test behaves very strangely...
It does not progress to the test list, it just sits there...(usual freq / level display)?

If I press Self Test again, the display starts twitching and the unit freezes up.? ?
The twitching shows as an update to the frozen display... locked program loop??
I have to power down / up to resume operation...? ?
Is this just me, I have not seen this reported or commented upon??
I tried numerous older versions of SW that do work, and perform the self test... 1.1-72 works (but does give an ATTEN Fail on self check)

Another comment, like some others, the waterfall mode appears as just one thin line at the bottom of the display.?
I've seen suggestions about checking the LCD for shorts etc... I'm an engineer... but I'm not 100% convinced that the LCD shorts would cause all of these reports...?

Aside from these minor issues, I LOVE the tinySA (and VNA too)? It's not an HP, I have one of those too, BUT the HP doesn't fit in m y pocket!?

Best!

Steve?

I expect the display test at the start of the self test fails.?
Let me try to simulate display failure and see how it behaves

First run original TinySA. Firmware 75, both waterfall modes work OK, self test passes.

73

-Jim
NU0C

On Sun, 17 Jan 2021 11:40:45 -0800
"Erik Kaashoek" <erik@...> wrote:

I expect the display test at the start of the self test fails.
Let me try to simulate display failure and see how it behaves
Do you see a single colored line appear at the top of the screen at the start of the selftest?
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Hello Erik,?

This test was with 1.1-75m freshy loaded.? ?My tinySA is HW V0.3? ? SN SA-20102809

The Level Cal works as expected, green progress "bar" etc, and completes.
However, the Self Test does not show the same green progress "bar"...




The only thing that appears to change is that the display reference level jumps from -90dB, to about -50dB. Please see attached photo above. .?
At that point the unit is in that frozen twitching mode. I have to power cycle to resume operation.?

I really appreciate the fast response and your help here!

Best!?

Steve

Just had another look, the instant I hit the Self Test mode, I see (for a very small fraction of a second) a line of dots or dashes at the very top of the screen.
They only exist for maybe 0.1 seconds or less... then it freezes / twitches..? ?Blink and you miss them!?

Steve?

As the waterfall is also not working this "hang" is caused by an error in the self test when it detects it can not read correctly back from the display memory.
I will correct this error in the next FW release.
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