Different voltage read continuos scan vs. single value read

[Jakob Olsen]

Hi,

I bought the MCC 128 recently, and I cannot understand why I get different voltage readings depending on the script I'm running. I have tried to run the singe_value_read.py where I get the correct voltage reading on channel 0 ~ 1V, however when I run the continuos_scan.py I get wrong voltage readings on all the channels - how come ?

[Fausto]

Hello @Jakob Olsen.

Do you have an external signal connected to all four analog input channels?  If not, then short the input channel terminals instead of leaving them open.  Connect 'CH # IN' to 'AGND'.

Regards,

Fausto

[Jakob Olsen]

Thanks that works :)

 

 

 

[Fausto]

Excellent.  Thanks for the update.