Hi,

I want to do the AD7878a calibration only with an accurate source.

1- So my first question is what do you mean by "accurate source" ? and please can you give me an example that I can use.

2- what is the meaning of LSBs and LSB ? because I'm confused !! sometimes I find LSBs in your formula. and sometimes I find LSB. so I want please to understand the difference in your formula. (it's perfect way that you give me an example with AIRMS or AVRMS).

3- what is the true meaning of this W/LSB constant ? ( Watt for each bit or what !!!) and how can I get W/LSB from V/LSB and A/LSB ?

4- I try to understand how can i use those two methods : instantaneous active energy calculation and line cycle active energy calculation ?

please give me an example for each method and how to use it to get energy true value ?

5- In my application, I want to use the line cycle active energy calculation, because I see in your forum that it's more recommended. so if it's possible to give in details, what are the steps that I should follow to use this method ?

thanks in advance for your feedback.

Nour

sorry I want to correct question 4 :

it's the active energy accumulation calculation, not instantaneous active energy calculation.

so I want to understand those two methods :

# how to do active energy accumulation calculation ?

# and how to do line cycle active energy accumulation calculation ?