Answer:
In short, no.
Emperor software, and the products that they control (eg MultiTest-i, MultiTest-xt, Vortex-i, Vortex-xt, Helixa-i, Helixa-xt, FTP-H1-i and FTP-H1-xt), do not utilise any Java/Apache software stack scripts or libraries within the software, firmware, installation tools or associated modules.
Consequently none of these prducts are affected by the Log4j vulnerability.