Spectrum Documentation states the following:
The CA Network and Systems Management (CA NSM) reached end-of-life in 2015.
Starting from CA Spectrum 10.2 release, the CA Spectrum-NSM integration is not supported.
From what I have understood, you can install a SystemEdge agent on the NSM server and use that to forward either logfile monitor traps or NSM SysEdge Agent (as the NSM AIM) traps to Spectrum.
Hope this helps.
Regards,
Dencel