Spectra Physics 125

[mixedgas]

I just put the manual in the car for scanning
Steve

[MrNIFty923]

Thank you for all your help. I know it is some inconvenience for you to scan the document but it is greatly appreciated. The 125 is a Victorian HeNe but it has a certain physical presence that modern models just can't match. Kind of like a classic car. I am very greatful.

[Eidetic]

I was going to take one in to work tomorrow to scan, but if you have it covered Steve, I'll hang back. For an etalon, I'd try Bob Arkin at Holospectra if Cambridge can't help.

[mixedgas]

I was going to take one in to work tomorrow to scan, but if you have it covered Steve, I'll hang back. For an etalon, I'd try Bob Arkin at Holospectra if Cambridge can't help.

There are a couple of different versions of the manual. We may both have to scan.

Steve

[Eidetic]

I have the 1967 manual for the 125, and one from 1969 for the 125A. Neither describe the cavity extension or etalon options, but do have schematics for both the 250 and 261 power supplies. Let me know if I should scan part of one.

[MrNIFty923]

The manual for the 125 and 125a would be great. And the schematic for the 250 power supply that way I can see what's going on and troubleshoot it accordingly. Thanks

[mixedgas]

Inquiry placed with admin on how to get permission for document station to do large pdfs.
Schematics I can do this evening.

You have RF assist on yours besides the DC PSU, yes/no?

RF uses 40.68 Mhz license free industrial band, 15 watts, capacitive coupled to tube, lowers noise...

I haven't worked on one of these in like 10 years...



Steve

[MrNIFty923]

Yes it does have the RF assist. It's a beautiful piece of electronics.

[mixedgas]

I'm 1.55 Mb over the forums limit on the file size for the 3pages of the schematics. I'll break it up in the morning.


Mr Nifty, its past my bed time, PM me with your email, I'll get it to you and the other gentleman who wants it, as well as post it here.

Steve

[mixedgas]

My manual has the solid state driver and solid state RF. If Eidetic has the tube based one, you need his. I see Eimac type tubes in your PSU.
However the resonator is the same, so when I scan that, your good.

Here is the solid state system, attached for posterity. If some one could place these in a folder on the FTP, life would be good.