I´ve soldered correctly the DSO 150. The traces works only at 5V/div correct (it seems also at 50mv).
What can be the reason?
Trace only works at 5V/div
Re: Trace only works at 5V/div
Please check signal SENSEL0 - SENSEL2. These signal might be stuck at 0V.
Re: Trace only works at 5V/div
What values needs to be at this measure points?
Re: Trace only works at 5V/div
Set the scope to different sensitivity and measure the voltages at the signals. Please see the attached table.
Re: Trace only works at 5V/div
Was a time offline.
I´ve checked the voltage. Everything as it should be.
Attached you can see the change of V/div. at 5V and 50mV the signal is correct. All others are noisy.
What can be the reason?
I can´t use this device like it is now!
I´ve checked the voltage. Everything as it should be.
Attached you can see the change of V/div. at 5V and 50mV the signal is correct. All others are noisy.
What can be the reason?
I can´t use this device like it is now!
Re: Trace only works at 5V/div
Can you post clear photos of the board?
Re: Trace only works at 5V/div
Thank you for the photos. The photo quality is great.
When you checked the voltages of SENSEL0 - SENSEL2 did you check them at the main board or at the pins of U3? How the noise look like? It looks you forgot to post pictures in your earlier post. Also, how are the power supply (AV+ and AV-) voltages?
From what you described the issue is related to U3.
When you checked the voltages of SENSEL0 - SENSEL2 did you check them at the main board or at the pins of U3? How the noise look like? It looks you forgot to post pictures in your earlier post. Also, how are the power supply (AV+ and AV-) voltages?
From what you described the issue is related to U3.
Re: Trace only works at 5V/div
The measure points you can see in the picture DSO150.
The other pictures shows parts of the video I tried to attach in a previous mail.
AV- --> -5.97V
AV+ --> +6,96V
The other pictures shows parts of the video I tried to attach in a previous mail.
AV- --> -5.97V
AV+ --> +6,96V
Re: Trace only works at 5V/div
Thank you for the photos. If you can please try a different power supply? It is better to use linear PS. We saw similar cases that happened on some switching mode power supplies.