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???
11/03/11 14:46
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 		 #184533 - calibration
Responding to: ???'s previous message
will be needed in any case.
If You will use 4MUX ADC , and 4 ADC - calibration with test weight will be same in both cases.
If You plane to use 'numerical' calibration (using passport data instead test weights) - then 4mux adc is simpler to 'pre-calibrate'.



List of 58 messages in thread
TopicAuthorDate
Load-cell conditioning / summing            01/01/70 00:00      
   what is that?            01/01/70 00:00      
      RE: #184430 - what is that?            01/01/70 00:00      
         then say what you mean            01/01/70 00:00      
            your description leaves something unclear            01/01/70 00:00      
               RE: #184435 - your description leaves something unclear            01/01/70 00:00      
                  where are the loadcells???            01/01/70 00:00      
                     RE:            01/01/70 00:00      
      RE: #184430 - what is that?            01/01/70 00:00      
         some Q/A            01/01/70 00:00      
            RE            01/01/70 00:00      
               Q/A 2            01/01/70 00:00      
                  RE            01/01/70 00:00      
                     re re            01/01/70 00:00      
                     get rid of that summing amp            01/01/70 00:00      
               you will be lucky to get 16 bits            01/01/70 00:00      
                  Precision again...            01/01/70 00:00      
                     Comparison            01/01/70 00:00      
                     RE            01/01/70 00:00      
                        why do you keep babbling about a summing amp            01/01/70 00:00      
                        Priorities...            01/01/70 00:00      
                           RE            01/01/70 00:00      
                              cirrus, ti            01/01/70 00:00      
                                 maxim, linear tech, Analog Devices            01/01/70 00:00      
                                 RE            01/01/70 00:00      
                              it takes the same time ...            01/01/70 00:00      
               500 running foot of cable            01/01/70 00:00      
                  RE            01/01/70 00:00      
                     Go for ADC with multiplexed inputs instead of multiple ADC            01/01/70 00:00      
                        Good Advice            01/01/70 00:00      
                           It depends...            01/01/70 00:00      
                              This is a MODULAR concept !            01/01/70 00:00      
                                 it depends            01/01/70 00:00      
                                 don't be ridiculous            01/01/70 00:00      
                                    Consider other parameters too.            01/01/70 00:00      
                                       calibration            01/01/70 00:00      
                                       if you do not buy bootleg parts ...            01/01/70 00:00      
                                          Voltage reference            01/01/70 00:00      
            Accuracy...            01/01/70 00:00      
               RE            01/01/70 00:00      
                  Keep the signal paths as simple as possible.            01/01/70 00:00      
                  sun umbrella            01/01/70 00:00      
   Separate Gain Paths - Not The Best            01/01/70 00:00      
      RE: #184439 - Separate Gain Paths - Not The Best            01/01/70 00:00      
         Error Budget Calculations?            01/01/70 00:00      
            Hysteresis            01/01/70 00:00      
         This should alarm you!            01/01/70 00:00      
            RE            01/01/70 00:00      
               No contradiction...            01/01/70 00:00      
                  RE            01/01/70 00:00      
                     Digital Summing            01/01/70 00:00      
               with DC exitacion ...            01/01/70 00:00      
            welcome on board            01/01/70 00:00      
      RE:            01/01/70 00:00      
   Look at ADuC845            01/01/70 00:00      
      ADuC845            01/01/70 00:00      
         Noise V good            01/01/70 00:00      
            Ok, then            01/01/70 00:00      

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