I have an E4432B without the OCXO option (1E5). I have a opportunity to get the OCXO module but need to know if it's just a simple swap out for the standard oscillator module on my A11 board. I've looked at my A11 board and it appears that there is an unused set of holes under the existing oscillator module that would fit the pins of the OCXO. If it is possible to swap in an OCXO module, would there be other things I'd have to do (component changes, jumper changes) to make it work? Thanks!