Electronics > Beginners
Digital Oscilloscope Maximum Input Voltage
mike_mike:
I have found that if I let the oscilloscope powered on for a few minutes, the offset between the trace and the CH1 mark is getting lower and lower. Is that normal ?
Damianos:
Yes! All instruments have a "warm-up time", to become in the "normal conditions", where they are calibrated...
You can find that information in the specifications section of the manual.
radiolistener:
--- Quote from: zvonex66x on January 21, 2018, 06:01:59 pm ---Maximum input voltage is 300V no metter if you set scale for 10V/div or 10mV/div...
--- End quote ---
I suspect that if you put 300V 500 MHz, the input will be burned out like a match :)
Some time ago, I asked Siglent support what is amplitude limit for high frequency for 1M input of their oscilloscope. I asked for 100 MHz frequency. They give me answer 40 Vpk. :)
400 V is supported through 10x probe. 400 / 10 = 40 ;)
I think 40 Vpk at 100 MHz is too much, I don't believe it can handle it with no damage. So, I don't want to test it :-BROKE :phew:
tggzzz:
--- Quote from: radiolistener on September 08, 2019, 12:51:16 pm ---
--- Quote from: zvonex66x on January 21, 2018, 06:01:59 pm ---Maximum input voltage is 300V no metter if you set scale for 10V/div or 10mV/div...
--- End quote ---
I suspect that if you put 300V 500 MHz, the input will be burned out like a match :)
Some time ago, I asked Siglent support what is amplitude limit for high frequency for 1M input of their oscilloscope. I asked for 100 MHz frequency. They give me answer 40 Vpk. :)
400 V is supported through 10x probe. 400 / 10 = 40 ;)
I think 40 Vpk at 100 MHz is too much, I don't believe it can handle it with no damage. So, I don't want to test it :-BROKE :phew:
--- End quote ---
Now look at the derating spec for the probe.
15pF at 100MHz is 100ohms. 400V into 100ohms means 4A is flowing :)
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