Optimus

 
RQ_XG_EX
 
Request X-ray generator for exposure
EWAX1:1 - EWAX1:2 - EWAX1:3 - EWAX1:4 - EWA100X1:A3
EWBX1:1 - EWBX1:2 - EWBX1:3 - EWBX1:4 - EWB100X1:A3
0V/+26V low active, high if waiting for sync contact
partner of XG_RD_EX for grid sync (20-21)