I rediscovered a post from Corby Dawson with pinouts for the DB9 connector on the above OCXO and wanted to preserve the info here. Thanks, Corby!
1000B 1000A-100 1200 and 9110 1 EFC ground EFC ground EFC ground 2 EFC +- 10V EFC +- 10V EFC 0 to +10V 3 coarse wiper NC NC 4 +12 pot ref. (10K) NC NC 5 Ground Ground Ground 6 oven mon. oven mon. oven mon. 7 +28V oven +18V oven NC 8 +28V elect. +28V +28V 9 case ground NC NC