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Dear sir,
In my last contact with Hantek support (on January 17 this year) I submitted a series of problems that I encountered in the operation of the oscilloscope. Of all of them the one that I called problem number 7 persists and to which Hantek support kindly answered me.
Specifically and with respect to problem number 7, I told them the following:
"Issue 7) Trigger does not sync well with sine or ramp waves in vertical scale below 2V/div and with low amplitude signals
- Trigger menu type: Edge.
- I inject the Wave Gen signal into any of the channels. If I set the output of the Wave Gen to square or exponential, the trigger works correctly and the signal trace is stable on the screen. But if I select the sine or ramp wave, the sync is lost many times if the amplitude of the signal is low (<1.5V) and the vertical scale is <2V/div.
I suspect that sometimes the trigger jumps between Rising and Either, but only with the sine or ramp signals. Changing the Slope mode to Rising, Falling or Either does not seem to have any effect on stabilizing the trace signal on the screen.
I've tried modifying the trigger level, but it doesn't solve the problem. Neither modifying the frequency seems to have any effect, only the vertical scale and the signal amplitude.
For example, with the vertical scale at 1V/div, 1Khz sine or ramp signal, 1.6V amplitude, the signal is not stable on the screen. It is enough to change the type of wave to square or exponential without changing anything else, and those signals stabilize without problems."
After performing the entire battery of tests that your support department told me to do, my response was as follows:
"Regarding problem 7, unfortunately it still exists. But only when the signal from the generator that I inject into channel 1 or 2 directly (using only one cable), is the sine or ramp wave type, and Volst/div for this channel is less than or equal to 2V.
If maintaining the amplitude level and the frequency, I change to exponential or square type signals, this problem does not occur even though Vols/Divs are set at 2V or below."
And finally on January 27 I receive the following last response from Hantek support about this problem:
"Dear Sir，
You need to replace the power board to solve this problem, but we are going to have a holiday soon, so this power board will not be sent to you until we go to work after the holiday.
support@hantek.com"
In the meantime I sent them my address, but as of today I still haven't received any response and they haven't sent me the board that needs to be replaced. I hope that the problem will be solved before the end of the year...
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Post time 2022-5-13 02:42:53
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Post time 2022-7-15 22:33:15