Patrick,
Nice find on the PRS10 and Datum/FTS 4040. The cesium is definitely
worth trying to get working. See if either of these pages help:
http://leapsecond.com/museum/fts4040/
http://leapsecond.com/museum/fts-7504/
The thin red / black wires you speak of are the +24 VDC and +10 VDC
power *into* the HV modules. The actual HV *output* comes out of those
special (black & green, or pink) highly insulated connectors. Let us
know if your 4040A looks anything like what you see in my photos.
----
If anyone on the list has experience with rodents, you'll notice the 4th
photo of the fts4040 link above shows that a mouse nibbled on the pink
silicone insulation around the HV connections. So be careful where you
store your old cesium standards. I'm used to bugs in s/w but rats in h/w
is a new low. What kind of HV goo should I replace it with?
/tvb
On 9/25/2020 12:10 PM, Patrick Tanner wrote:
Hi folks.
I'm new to the board, my name is Patrick. I'm a career RF/systems engineer.
Greetings all around!
I just made a couple of 'good' handyman special buys on the worlds largest
auction. I got a PRS10 that needed a new SA612A mixer that I got working,
so, happy about that. Thanks to KO4BB for having the schematics.
I also picked up a FTS4040A, apparently with a failed PSU. Its labelled
'high voltage' , but the dinky 24? 26? Ga output leads (red/black 3x
ganged) don't led me to believe that there' s 2.2kV here. Can any one shed
some light on what this PSUs output is? I'm hoping that I can either fix or
replace it and find a diamond here.
Thanks for your help.
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