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2203 vs. 3204a ADC scaling

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2203 vs. 3204a ADC scaling

Postby johnm1019 » Tue Jan 24, 2012 12:44 pm

Hi, in the PDF for the 2203 it says oscope values are scaled from
Constant Reading Voltage
PS2000_LOST_DATA -32 768 Indicates a buffer overrun in fast streaming
PS2000_MIN_VALUE -32 767 Negative full scale
0 0 Zero volts
PS2000_MAX_VALUE 32 767 Positive full scale

and for the 3204a
Function Voltage Value returned
decimal hex ps3000a
MinimumValue minimum -32 512 8100
zero 0 0000 ps3000a
MaximumValue maximum 32 512 7F0

I just wanted to check that these are, in fact, correct numbers -- it strikes me as weird that different picoscopes would use different scalings.....
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Re: 2203 vs. 3204a ADC scaling

Postby Martyn » Tue Jan 24, 2012 12:54 pm

Yes those values are correct. The 2203 is an old scope which uses one of our original style drivers, these have been totally rewritten for our newer scopes including the 3204a.
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