The basic OCXO is used in many products. Look at the 3325 A/B manual or the 53334 A/D manuals It may vave one of several interface boards The 3325 simply alows it to e chassis mounted, while the 5334A/b has an edge connector to pug it into the chassis. I am awaiting cataract surgery, so I will not attempt yo identify whicch version you have
A6 Control Assembly 03325-66506 is used in the 3325A/B but I dont have any tepair noyes on other modeless.