Spotted right now another issue with Trigger with low level signal, i.e Sine 1MHz 50mVpp does not trigger with zero and negative thresholds (see attached image).
Rising threshold to 5mV and / or signal amplitude to 60mVpp scope starts to trigger ...
The same with i2c, I have to set the threshold to 4.4V for the decoder to decode correctly (The i2c signal on the Arduino has a slow rise time due to internal resistor value).FYI, you probably just need to add an appropriately sized pull-up resistor for your bus capacitance.
The same with i2c, I have to set the threshold to 4.4V for the decoder to decode correctly (The i2c signal on the Arduino has a slow rise time due to internal resistor value).FYI, you probably just need to add an appropriately sized pull-up resistor for your bus capacitance.
There's nothing "probable" about it. You're supposed to add external pullups. It's I2C 101.
AVR microcontrollers have internal pull-up resistors
Basically, the scope is always assuming 10 bit addressing. There is nowhere to set 10 bit (I guess the "without/with" sets 7/8 bit) so I can't clear it. I've tried setting 7 bit addressing in the I2C trigger and copying this across with the "copy trig" button in the decoder setup, but no luck.
(Attachment Link)
It came with 2.00 and have updated to 2.11, but the bug persists. Anyone else see this? I was going to try a factory reset in case there's something randomly stale, but couldn't find one of those either.
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It came with 2.00 and have updated to 2.11, but the bug persists.
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The rotary encoders on my DHO4204 aren't reliable, as this video demonstrates:
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It feels like the light isn't passing through some of the holes in the encoder wheel as the issue is present at the exact same spot on the dial. I've not taken mine apart, just guessing based on what I know about how MCUs process the signals from a rotary encoder (example attached).
Almost the first time I turned it on and I found a bug
Almost the first time I turned it on and I found a bug
Update your firmware and try it again.
Out of interest: Does the reference voltage for serial decoding work correctly when the probe attenuation is set to 10x? Or is it 10x smaller than the value you set?
There's a bug in the DHO800 series at the moment and I was wondering is it's in the DHO1000.
On 10X it is ten times bigger than on 1X, if I understand correctly your question.
a) If you select save both PNG and CSV on Quick, after restart it will save PNG and BIN.
b) File names are still like Rigol1, Rigol2... quite annoying, I would prefer to have simple date-time stamp, as we have for smartphone photos.
c) Appearance of waveforms in PNG files depends on the Run/Stop state. - Not sure, if this is a bag. In running mode it looks much smoother (High-res).
Does it have a RTC with battery?
On the DHO800 there's a display setting called "Waveform freeze" to control this.