PicoScope 7 Automotive
Available for Windows, Mac, and Linux, the next evolution of our diagnostic scope software is now available.
Channel overrange
Channel overrange
Hello,
I found there is something strange on Pico automotive 6 ,ver 6.14.5.4585 during demo mode(because I have not purchased a pico scope yet) .
As I use the demo mode to look into the injector voltage which is provided inside this software.
There is some moment that on the upper left corner a message" channel overrange" will be shown.
Please see attached 2 pics, one is normal condition , the other is when "channel overrange"happens.
As the voltage is set as AUTO, so during normal condition, the Y axis is up to 5V.
It makes me confused that when "channel overrange"happens, it seems the Y axis is much shorter.
I found there is something strange on Pico automotive 6 ,ver 6.14.5.4585 during demo mode(because I have not purchased a pico scope yet) .
As I use the demo mode to look into the injector voltage which is provided inside this software.
There is some moment that on the upper left corner a message" channel overrange" will be shown.
Please see attached 2 pics, one is normal condition , the other is when "channel overrange"happens.
As the voltage is set as AUTO, so during normal condition, the Y axis is up to 5V.
It makes me confused that when "channel overrange"happens, it seems the Y axis is much shorter.
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Re: Channel overrange
This is perfectly normal and expected operation for your settings.
What is happening is that initially the scope selects the 5V range as it detects a 2.5V injector spike, but as you are free running without a trigger occasionally there is a buffer with no injector signal and the trace sitting at 0.75V. At this point the auto range kicks in a drops the voltage range to 1V (in your picture), and the next injector pulse at 2.5V that comes along causes an over voltage warning, with the auto range then selecting the 5V range for the following buffer.
Either select the +/-5V range, or add in a trigger from the bottom menu.
What is happening is that initially the scope selects the 5V range as it detects a 2.5V injector spike, but as you are free running without a trigger occasionally there is a buffer with no injector signal and the trace sitting at 0.75V. At this point the auto range kicks in a drops the voltage range to 1V (in your picture), and the next injector pulse at 2.5V that comes along causes an over voltage warning, with the auto range then selecting the 5V range for the following buffer.
Either select the +/-5V range, or add in a trigger from the bottom menu.
Martyn
Technical Support Manager
Technical Support Manager
Re: Channel overrange
I couldn't expect a more clear answer.Thank you very much
Cheers!
Cheers!