I made some headway and am measuring voltages on the power board. One thing we realized I'm going to have to figure out. My 5030 unit is getting it's power from the DB-37 cable. Many later units got it from the DB-9. Mine doesn't have anything connected to the DB-9. One thing I need to figure out is the pin out of the DB-9 for the power. The reason is because if I hook up the FTS 6006 on the DB-37 then I'm guessing it won't have power any longer. The FTS 6006 most likely doesn't power the 5030. I ordered a nice DB-9 breakout board to help with this and an extension cable for it. I did the same with the DB-15 but that was a total waste since all it is is basically 3 relays. No signals on there to measure at all. When it's doing is frequency thing now like in the video it doesn't really get down to 10MHz. I've seen it briefly try and hit right under 10 but then snap immediately back up to the high frequency again and start counting down again. It's trying to do it's thing. The voltage looks pretty good although I found out the -18 V on the CPU board is reading more like -20 V. Regardless what happens with this it's already been a fun journey. If I can't get this one going I'm always looking for other units.
On the Rb front I have another GPS disciplined Rb in the works that's a Spectratime SRO-100 based instead of the SRS PRS10 one I posted about recently. I'm excited about it because it does something the PRS10 doesn't do... it saves it's disciplining variables in non volatile memory. Another difference is this one is disciplined with Ublox LEA-8T instead of LEA-6T like the SRS PRS10. I love the idea of GPS disciplined Rb. It's really more practical than the Cs and much easier to work with.
The more I experiment with these Rb and GPS driven oscillators the more I'm finding out how variable they all are... once you get into ns and ps there's more going on than most people usually see. I guess that's what it's all about though?