I have removed the HP Opt 010 board from my 53132A and installed the MV89 variant from Poland. So far, looks good.
Having done that, C2, C3, C4, and C5 on the HP 53132-60011 board that I 'modified' to a 53132-60016 board, appear to be .01 uF SMT caps. The 'take home' message here is that the 53132-60011 board, on which C2, C3, C4 and C5 reside, appear to be 10 nF (aka 0.01 uF caps) as best I can measure with my 'Smart Tweezers'. These parts are not on the 53132-60016 board. Charles Steinmetz has annotated the schematic of the 53132-60011 board to clarify some issues as well. Please add these values to your schematics. I'll see if I can make a modification to the schematic and upload the details to Didier's site. Hope this helps. Joe -----Original Message----- From: time-nuts [mailto:[email protected]] On Behalf Of J. L. Trantham Sent: Sunday, April 19, 2015 3:39 PM To: 'Discussion of precise time and frequency measurement' Subject: [Bulk] Re: [time-nuts] [Bulk] Re: [Bulk] Re: Ultra High Stability Time Base Options for 53132A If anyone is interested in adding a clearer version of the 53132-60011 board on page 13 of the CLIP for the 53132A, I have redrawn the schematic. I have the values of all components except 4 capacitors that appear to all be the same. I can measure them, if needed, but I will have to remove the unit from my counter. I plan to do that in a few weeks when the MV89 version of the time base arrives. Please let me know if you would like a .PDF of the 'redrawn' schematic. About 2.2 MB file. I also have pictures of the board if anyone needs that as well. Joe _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
