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Rohde & Schwarz Oscilloscopes - Questions/Comments? Let me know!
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irakandjii:
Hi Rich

In the other thread "RTB2000" specific.  Mike has done a 55 min. video on serial decodes.  For the most part, I am very pleased with the capability & features. 

His comments on the framing for UART framing are "valid" in my opinion.  It appears for the decode purposes the framing is "1 symbol" as stipulated Baud rate definition.  Baud rate = number of symbol changes per sec. 

But, the more useful form of framing is as Mike states "is a sequence of symbols". 
1) Even the simplistic form of Frame defined as "20 symbols1 " would be a huge improvement. 
2) Frame defined as "arbitrary start symbol"+ "all symbols here" +"arbitrary stop symbol"  Would be even more useful.

* Example: (STX) + "Hello World" + (ETX)  is a text frame in the ancient world of ASCII
I don't know if this is possible, but it would be a HUGE differentiator for your scope!


OOP's  when I put the literal 20 in "20 symbols1 " , I meant an unsigned integer variable


(1) Symbol is defined as "Number of data bits", symbol frame = databits + stop bits ... etc
Rich@RohdeScopesUSA:

--- Quote from: irakandjii on March 24, 2017, 01:33:59 pm ---Hi Rich

In the other thread "RTB2000" specific.  Mike has done a 55 min. video on serial decodes.  For the most part, I am very pleased with the capability & features. 

His comments on the framing for UART framing are "valid" in my opinion.  It appears for the decode purposes the framing is "1 symbol" as stipulated Baud rate definition.  Baud rate = number of symbol changes per sec. 

But, the more useful form of framing is as Mike states "is a sequence of symbols". 
1) Even the simplistic form of Frame defined as "20 symbols1 " would be a huge improvement. 
2) Frame defined as "arbitrary start symbol"+ "all symbols here" +"arbitrary stop symbol"  Would be even more useful.

* Example: (STX) + "Hello World" + (ETX)  is a text frame in the ancient world of ASCII
I don't know if this is possible, but it would be a HUGE differentiator for your scope!


(1) Symbol is defined as "Number of data bits", symbol frame = databits + stop bits ... etc

--- End quote ---
Hi irakandjii - thanks for pointing this out.  My understanding is R&D in Germany has already reviewed Mike's video and has put together a list of answers, enhancements and bug fixes and has provided that to our local person in the UK to pass on to Mike.  I actually haven't seen the list yet, so I can't say how this was specific topic was answered, but please stay tuned.  :-+

-Rich
mikeselectricstuff:

--- Quote from: irakandjii on March 24, 2017, 01:33:59 pm ---Hi Rich

In the other thread "RTB2000" specific.  Mike has done a 55 min. video on serial decodes.  For the most part, I am very pleased with the capability & features. 

His comments on the framing for UART framing are "valid" in my opinion.  It appears for the decode purposes the framing is "1 symbol" as stipulated Baud rate definition.  Baud rate = number of symbol changes per sec. 

But, the more useful form of framing is as Mike states "is a sequence of symbols". 
1) Even the simplistic form of Frame defined as "20 symbols1 " would be a huge improvement. 
2) Frame defined as "arbitrary start symbol"+ "all symbols here" +"arbitrary stop symbol"  Would be even more useful.

* Example: (STX) + "Hello World" + (ETX)  is a text frame in the ancient world of ASCII
I don't know if this is possible, but it would be a HUGE differentiator for your scope!


(1) Symbol is defined as "Number of data bits", symbol frame = databits + stop bits ... etc

--- End quote ---

Framing each byte makes no sense whatsoever and would have no useful purpose. Framing packets would be useful and be consistent with how SPI decode behaves. 

I don't think they should bother with STX/ETX etc. as they are wider and there are still all the top-bit set values to deal with - 2 hex digits is just fine.   
vealmike:
Hi Rich,

I have a question about the R&S 'scope range. But first a little background.

Five or six years ago, when R&S first entered the 'scope market, I bought (well I selected, my then employer bought) two of your 1GHz four channel 'scopes. I think the list price was close to £30,000 UKP. Unfortunately I don't remember the model number.

As you should expect for that kind of money they were absolutely superb pieces of kit. Very low noise high resolution measuring machines. Typical R&S quality.

Since then, R&S have acquired Hameg. Now all Hameg designs are badged as R&S.
Now I'm sure there were very good business reasons for doing this, but Hameg sold into the high end hobbiest / low end electronics market. They didn't have R&S's attention to detail and they didn't pretend to.

Could you please tell us which of the current lines are designed in house at R&S and which are Hameg 'scopes.
I'm sure you will tell us that R&S have been working hard to bring your quality to the lower end 'scopes. I'd be very interested to know what has been done on that front.
JohnG:

--- Quote from: Rich@RohdeScopesUSA on March 23, 2017, 02:19:38 pm ---
Hi John - thanks for the feedback.  While we may not add new features to the RTO1000 (some things can't be done with it), we will of course continue to fix bugs.  Please feel free to PM your bugs and I can make sure they are submitted.

-Rich

--- End quote ---

Thanks. As I mentioned before, the actual measurement capability is excellent, especially the low noise even on the 1mV/div scale. I will reiterate that the support I received was generally very good.

My rant about scopes just means that I would like you to succeed in this market and provide the other scope vendors some serious competition.

John
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