Hi to All,
Regarding my remark about the newer Controller Boards in early 2465B's. In my Files I read the following (out of a SMD-Board Description of Qservice):
" This board is backwards compatible with ALL SMD Versions having Part Numbers ending in -00, -01, -02 , -03 , -04, -05
It can also be used in older B Series Oscilloscopes to replace the older Discrete Component Controllers
and eliminate the need for a separate Readout Board as this board contains all readout circuitry,
Using it in any older serial number instruments (below B050000 ) is limited to standard instruments only.
Options fitted in low serial oscilloscopes will not work with new controllers. "