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Help me remove ARMED mode from my UNI-T UPO2102E oscilloscope

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Bud:

--- Quote from: bdunham7 on September 24, 2023, 10:29:07 pm ---  If it doesn't revert to AUTO trigger, try the AUTO trigger button and make sure you actually have a triggerable waveform.

--- End quote ---
I believe the AUTO button is not  trigger mode button, it rather sets optimal controls so the current waveform fills the screen amplitude- and timebase-wise. (according to the device user manual). Trigger modes needs to be set through Trigger menu.
If OP, say, connects CH1 input to the calibration terminal and press AUTO, and the scope becomes frozen that means the scope is defective.

H.O:
Strange. The word "ARMED" is not even in the UPO2000E series manual.
--- Quote ---Trigger Status Identification: Include TRIGED, AUTO, READY, STOP, and ROLL
--- End quote ---

If you're probing the 1kHz compensation signal you should still see the edge in the center of the screen but you're at 1us/div when the period of the signal is 1000us. I'd try setting the timebase to something more reasnoable, like 500us/div.

Bud:
If both input channels were damaged or other type of hardware damage occurred, there would  be no signal into the ADC or input would be out of range, and that may cause trigger circuit confusion and no trace on the screen. But one of the pictures above shows a trace so input circuitry may be oK. Given that using AUTO button freezes the scope, device firmware/memory maybe corrupt.

Andrew-XZR:
Sorry I don't know how to use the forum, these are my first times,
That's right, it didn't react to any key pressed... I already managed to repair it, I contacted the manufacturer with the email the university gave me and they responded, they provided me with the firmware, I installed it and it was working again...
Thank you very much to everyone

exe:
Glad it was fixed.

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