Author Topic: Rigol Math -> logic '0'/'1' simultaneous conversion for the 2 channels ?  (Read 1737 times)

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Offline roli_bark

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Is there a way to preform Math -> Logic conversion for Ch.1 & Ch. 2 simultaneously (Rigol DS2702) ?

E.g. - The goal is to achieve a logic ('0' or '1') display of the 2 internal variables (A & B), A sourced by Ch.1, B sourced by Ch.2, with appropriate Threshold levels for Ch.1 & Ch.2 ? Also, enabling the display of variables A/B only [rather than an overlay] ?
« Last Edit: May 14, 2013, 08:36:49 am by roli_bark »
 

Offline marmad

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Is there a way to preform Math -> Logic conversion for Ch.1 & Ch. 2 simultaneously (Rigol DS2702) ?

E.g. - The goal is to achieve a logic ('0' or '1') display of the 2 internal variables (A & B), A sourced by Ch.1, B sourced by Ch.2, with appropriate Threshold levels for Ch.1 & Ch.2 ? Also, enabling the display of variables A/B only [rather than an overlay] ?

I don't understand what you're asking; can you be more specific? Obviously, the DS2000 does Math -> Logic (AND/OR/NOT/XOR) using either or both channels as source - but what do mean simultaneously?
 

Offline roli_bark

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Ooops sorry, elaborate:

The goal is to get a Logic representation of all Analog Channels.
Today there's only one Math function in Rigol Scopes (displayed as 'Deep Blue). To get the Math function represent CH.1 as logic '0'/'1', a Math = 'A or B' can be defined for example, where A is sourced by Ch.1 & B by Ch.2 (tied to Ground). Now the 'Deep-Blue' Math display represents Ch.1 digitally.

My question is whether it is possible to defined 2 Math functions for the 2 channels (or 4 for 4)

Example:
Math set to the logic option. And the logic equations are defined as,
Math-1 = A or GND
Math-2 = B or GND
Math-3 = C or GND
Math-4 = D or GND

Where A is sourced by Analog Ch.1 (with the appropriate Threshold defined for Ch.1)
Where B is sourced by Analog Ch.2 (with the appropriate Threshold defined for Ch.2)
Where C is sourced by Analog Ch.3 (with the appropriate Threshold defined for Ch.3)
Where D is sourced by Analog Ch.4 (with the appropriate Threshold defined for Ch.4)

with the option to display only Math-1, Math-2, Math3, Math4 (and not as an overlay).
 

Offline marmad

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My question is whether it is possible to defined 2 Math functions for the 2 channels (or 4 for 4)

No. The DS2000 can display only one Math waveform at a time.

Quote
with the option to display only Math-1, Math-2, Math3, Math4 (and not as an overlay).

No. If channel 1 or 2 are turned on (visible), they can be used as a source - if they're not visible, they can't be a source.
 

Offline EV

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- if they're not visible, they can't be a source.

Yes, but if you stop the scope you can turn the channels off and still see the math curve.
 

Offline marmad

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Yes, but if you stop the scope you can turn the channels off and still see the math curve.

Sure, because sample memory is frozen and not being overwritten with new data. When the scope is running, turning off one channel will automatically cause the memory to be re-assigned to the other channel - and so overwritten.
 

Offline roli_bark

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I wonder whether Rigol read posts here. This could be a nice wishlisted feature, that could have been (or can be) implemented by Firmware alone, and could gain us users 4 LA channels...
 


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