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???
03/10/11 10:33
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 		 #181528 - Seems like around 200Hz sample rate
Responding to: ???'s previous message
Jim Granville said:
Run some simple numbers.
Your plots indicate ~11% of the period is sample rate, which maps to a sample rate of 450Hz, and that suggests ~9600bd, if sending 16 bits with no framing.
so you are within 2:1 of what I'd call expected.

My eyes thinks it looks like 4 samples/period for the 50Hz signal, indicating a sample rate of around 200Hz.

List of 40 messages in thread
TopicAuthorDate
Transmitting a 100 Hz signal through 8051            01/01/70 00:00      
   What is your problem?            01/01/70 00:00      
   RE: "the 8051 has transmission speed upto 19200"            01/01/70 00:00      
      the 8051 has transmission speed upto 19200            01/01/70 00:00      
         Incorrect analysis            01/01/70 00:00      
            Timing            01/01/70 00:00      
               Doesn't help to send at exact time - PC receive will jitter            01/01/70 00:00      
                  Windows For Sure Will...            01/01/70 00:00      
                  A Labview Limitation?            01/01/70 00:00      
         What makes you think that?            01/01/70 00:00      
            What makes you think that?            01/01/70 00:00      
               How fast are you sampling            01/01/70 00:00      
               Insufficient analysis            01/01/70 00:00      
                  20x            01/01/70 00:00      
         you can (I have) easily get 460kb.            01/01/70 00:00      
            No need to look for high baudrates            01/01/70 00:00      
               It doesn't help            01/01/70 00:00      
                  At least ...            01/01/70 00:00      
   Haven't you done this before...?            01/01/70 00:00      
   Here are the results in the form of images            01/01/70 00:00      
      Didn't bother to preview, did you?            01/01/70 00:00      
         How did you concluded?            01/01/70 00:00      
            Duplicate!            01/01/70 00:00      
         How did you concluded?            01/01/70 00:00      
            I think you're wrong            01/01/70 00:00      
            Looks close to 'as expected'            01/01/70 00:00      
               Seems like around 200Hz sample rate            01/01/70 00:00      
                  4 samples/period for the 50Hz signal            01/01/70 00:00      
            Not sure about your concept            01/01/70 00:00      
               Depends            01/01/70 00:00      
               Continuous monitoring?            01/01/70 00:00      
                  Ambiguity            01/01/70 00:00      
   Displaying the Signal at real time            01/01/70 00:00      
      Still not mentioned what the problem is            01/01/70 00:00      
         I do not think they know the problem            01/01/70 00:00      
            A Ring Buffer ...            01/01/70 00:00      
               A double-buffered solution also possible            01/01/70 00:00      
            What is the Problem.            01/01/70 00:00      
         real RS232?            01/01/70 00:00      
            Huge FIFO in USB-to-serial adapter            01/01/70 00:00      

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