EC200S-CNAA and EC200S-CNAB

Hi,
I hv 2 type of EC200S-CN.
one is EC200S-CNAA and the other is EC200S-CNAB.
What is the differencies from both type?

many thanks.

Hello thio77, thanks for your question
The main difference between EC200SCNAA and EC200SCNAB is crystal oscillator, EC200SCNAA use TCXO, EC200SCNAB use DCXO, thank you.