The only version of the A2B Analyzer available for sale is the latest Generation 3 ("Gen 3"), based on the AD2428 transceiver. For a majority of user scenarios, the Gen 3 Analyzer should also be functionally compatible with A2B nodes based on the older transceivers such as AD2410, AD2425, and their variants.
See this compatibility matrix for more details.
To order the Gen 3 Analyzer, use the part number 277341. If you have additional questions, please post in the Communities, or contact your Mentor representative.