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That sounds like the parts were long stored in a very poor environment. I have never seen that in the original caps in any of my 16 HP instruments of that vintage (13 working and 3 parts junkers).

A. My comment is not about your claimed experience. B. It might not work if you do it, but when I, with 30 plus years of experience and NIST traceable gear do it, its dead accurate Its an instrument

Being an EE with manufacturing, parts buying and engineering experience, these caps didn't even make it past check-in against the invoice on Receiving they were that badly oxidised- so badly I could

Anyone know much about these?? ?Allows you to connect a 16700/16900 to a PCI card. I picked up three of them with a used system and was able to get the manual and software from the manufacturer but

Thanks very much Richard.....................................Don. wrote:

Why? How did you determine that the electrolytics needed to be replaced? I have many HP instruments of that vintage that still meet spec and have never needed to have any of their caps replaced,

David Campbell wrote on 3/6/2020 10:14 AM: <snip> Hello, Dave-- Were there any date codes on the Sprague caps? Thirty years ago might register as, for example, 2690 (i.e., the 26th week of 1990).?

651B 1975 edition. Replaced all of the electrolytics and tantalums, quite a chore to get the exactly correct values Several caps were replaced with two or three in parallel. Same or better tolerance

I’ve posted the information related to the frequency response change for the 535x series a couple of years ago but to sum it up again, You do have to change the switch/jumper position AND you have

HPAK don't quote insertion losses for precision adaptors bigger than 1mm. One must assume they are insignificant?compared to the return loss / SWR. Robert G8RPI.

Hi Don. No worries. I also plan on trying the DIP switch (or jumpers) on my '50 and see if it can do above 20 GHz. I'm limited to 24 I think with my 8350 which is my current project. Will post

Thanks Bob,Mark, and Askild. I apologise for taking so long to reply - this is due to the different time zones. Yes, the `52 has a different sampler than the `50,or`51. The `50,and `51 have the same

I had to order and ship to my work, they would not deal with my home address. Fortunately i work for a custom magnetics company that supplies inductors and chokes to Keysight lol.

Hi Dave, Yes, I meant 1750 not 40, typo :) they are parts of many cal kits and available separately too. I've found the part numbers in various HP adapter catalogs and manuals but no indication of IL

The '52 has a different MW sampler (might be screened for upper frequencies) and a different input connector assembly. mark

What are the hardware differences between the '51 and '52? Thanks! Bob

Just tested changing the switches, and checking with ID? sw 4&7 - HP5350B sw 4&6 - HP5351B sw 4&5 - HP5352B Askild [email protected]> wrote:

Hi, Just open my 5351B, and the switches was the same [image: 5351B.jpg] Then I checked gpib ID? response, and it gave: HP5350B. So these switch settings is for the 5350. I must say that this was a

Instructions to alter 5350/51B to a 5352B: There’s either a DIP Switch (S1 on the motherboard) or a set of jumpers right behind the processor board. For the 5350B, the settings are positions 4 & 7

Am 05.03.2020 um 16:17 schrieb Yves Tardif: these are the jumpers in my 5350B Rainer