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Re: HP 8341B RF sweeper has reduced output
Thanks for the info, In this case, by my mistake, the resistance R40 is 10K, but it doesn't change your information. The goal is to obtain the original HP resistance according to the photo Best
By H Kapa · #123227 ·
Re: Low EMI lighting for labs and work areas
It sounds like almost worth putting together a list of "known low emission" LED fixtures for others to refer to when selecting their bench lights. I am aware this will be very market-dependent, but
By Radu Bogdan Dicher · #123226 ·
Re: Low EMI lighting for labs and work areas
FWIW, here's another possibility. I use 12V LED strips, powered directly from the 12V side of my solar power system. I have only fairly light loads on that side of the system, and with 940AH of
By Steve Hendrix · #123225 ·
Re: Low EMI lighting for labs and work areas
A few years ago we decided to go with LED bulbs in the household, I found that there was a significant difference in RFI between models (20dB+, 1-30MHz) and no correlation whatsoever to price/well
By Tommy · #123224 ·
Re: Low EMI lighting for labs and work areas
Currently I am thinking the same as Jon - research the high quality LED options and go with the DIY linear solution for the close-in task work.? Of course, "research the high quality LED options" is
By Harold Foster · #123223 ·
Re: Low EMI lighting for labs and work areas
Hal, I was just about to post on this - really interested in the conversation and solutions proposed/found! I am currently using a couple of those LED fixtures that replicate the format of fluorescent
By Radu Bogdan Dicher · #123222 ·
Re: Low EMI lighting for labs and work areas
use high quality LED strip and EU not Chinese ballast compliance to EMI a nd safety Fluorescent are arcs,and wideband RF and microwave noise emitting Jon
By Froggie the Gremlin · #123221 ·
Low EMI lighting for labs and work areas
All: I'm in the process of moving and am thinking about the design of my new lab/work area and am trying to decide on the lighting.? In particular I would like to minimize the effect of radiated
By Harold Foster · #123220 ·
Re: HP 8341B RF sweeper has reduced output
I've had to replace 'O' rings in quite a few of these attenuators over the years, in most cases because they had gone brittle and disintegrated. However, two days ago I decided to sort out an 83545A
By Adrian Nicol · #123219 ·
Re: HP 8341B RF sweeper has reduced output
I looked through my stash and I still have one new push rod with o-rings , I can send you this one free of charge if you email me your adress Sent from
By Lothar baier <Lothar@...> · #123218 ·
Re: HP 8341B RF sweeper has reduced output
Be cautious when removing the push rods not to break off the tips , you need a needle to push the tips over gently when pulling them out , the contacts actually have a slot that ends in a little hole
By Lothar baier <Lothar@...> · #123217 ·
Re: HP 8341B RF sweeper has reduced output
thanks to all who replied, i just watched a "rf attenuator rebuild" video and ordered a "watch repair rubber o-ring kit"..cause I didnt have tiny o-rings like that...seems some in there should
By claude · #123216 ·
Re: HP 8341B RF sweeper has reduced output
Lol ! contact cleaner will ruin your RF performance . I also seen people lubricate the plungers surefire way to gunk up the plungers in the long run Sent from
By Lothar baier <Lothar@...> · #123215 ·
Re: HP 8341B RF sweeper has reduced output
First of the JFW attenuators are by no means similar to the HP ones , they use a different design and are intended for a different target market , there are only 2 companies who use the edge line
By Lothar baier <Lothar@...> · #123214 ·
Re: HP 8341B RF sweeper has reduced output
Absolutely agree on using surgical swabs, I should have mentioned that. And don¡¯t flood the attenuator with isopropyl or spray on contact cleaner. I¡¯ve replaced more o rings that had turned to
By Steve - Home · #123213 ·
Re: HP 8341B RF sweeper has reduced output
At least the HPAK step attenuators are high performance.? ?I checked the 40 GHz ones out not too long ago versus similar ones from JFW, and there was no comparison!? HPAK beat JFW on every single
By Jim Ford · #123212 ·
Re: HP 8341B RF sweeper has reduced output
https://www.keysight.com/my/viewPart/8496G Here is the parts breakdown of the parts available for the step attenuators Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows
By Lothar baier <Lothar@...> · #123211 ·
Re: HP 8341B RF sweeper has reduced output
https://www.keysight.com/my/partDetail/5060-0342 turns out they still sell em for $20 , the picture also provides a good illustration of the pushrod with the rings Sent from
By Lothar baier <Lothar@...> · #123210 ·
Re: HP 8341B RF sweeper has reduced output
Those o rings always been a pain and agilent did not learn the lesson because the newer 50GHz attenuators had the same issue ! agilent used to sell the o-rings as well as the push rods with o-rings as
By Lothar baier <Lothar@...> · #123209 ·
Re: HP 8341B RF sweeper has reduced output
I would look at the solenoids before cleaning the pad contacts. My guess is that one of the plungers is stuck due to a deteriorated "o" ring. Cheers! Bruce Quoting Steve - Home <steve-krull@...>:
By Bruce · #123208 ·
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