Rigol Math -> logic '0'/'1' simultaneous conversion for the 2 channels ? - Page 1
Forum section: electronics / testgear

author: roli_bark
author_rank: Regular Contributor
timestamp: May 14, 2013, 08:11:41 am
content: 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] ?

author: marmad
author_rank: Super Contributor
timestamp: May 14, 2013, 09:54:27 pm
content: Quote from: roli_bark on May 14, 2013, 08:11:41 amI 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?

author: roli_bark
author_rank: Regular Contributor
timestamp: May 15, 2013, 05:07:59 am
content: 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 GNDMath-2 = B or GNDMath-3 = C or GNDMath-4 = D or GNDWhere 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).

author: marmad
author_rank: Super Contributor
timestamp: May 15, 2013, 11:24:08 am
content: Quote from: roli_bark on May 15, 2013, 05:07:59 amNo. The DS2000 can display only one Math waveform at a time.QuoteNo. 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.

author: EV
author_rank: Frequent Contributor
timestamp: May 15, 2013, 12:13:04 pm
content: Quote from: marmad on May 15, 2013, 11:24:08 amYes, but if you stop the scope you can turn the channels off and still see the math curve.

author: marmad
author_rank: Super Contributor
timestamp: May 15, 2013, 02:42:27 pm
content: Quote from: EV on May 15, 2013, 12:13:04 pmSure, 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.

author: roli_bark
author_rank: Regular Contributor
timestamp: May 15, 2013, 03:20:40 pm
content: 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...