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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 ·
Re: HP 8341B RF sweeper has reduced output
If you have dirty pads usually your loss will roll off at lower frequencies and then normalize at higher bands , this is because the dirt in essence is a series capacitor creating a high pass
By Lothar baier <Lothar@...> · #123207 ·
Re: 8516A cable question
Yes, cables called "null modem" tend to have pins 2 and 3 swapped, IIRC.? Apparently you don't want one of those.? Those in this group more familiar with datacom than I am can expand on this.?
By Jim Ford · #123206 ·
Re: 8516A cable question
Make sure its wired 1 to 1 Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows ________________________________ Sent: Thursday, March 3, 2022 5:32:43 PM To:
By Lothar baier <Lothar@...> · #123205 ·
Re: HP 8341B RF sweeper has reduced output
In the 8340/41 the output power indicator is measuring power before the attenuator so will indicated ¡°requested¡± power, not actual output power. Band 0 is 10 MHz - 2.3 GHz, the swept LO is mixed
By Steve - Home · #123204 ·
Re: HP200CD oscillator
https://www.budgetronics.eu/en/resistors/resistors-10-watt/resistor-15k-ohms-10-watt/a-25058-10000229
By Bob Albert <bob91343@...> · #123203 ·
Re: HP200CD oscillator
Hi Jim Adney, I have a 200CD Ser.605- working on my bench and a few days ago in the middle of another repair my 200CD signal failed, how is it possible!! it was completely silent, it was left to wait
By H Kapa · #123202 ·
HP 8341B RF sweeper has reduced output
Hi all My HP 8341B sweeper looks like output down 10dbm~13dbm from requested level output...measured on a Boonton 4200 power meter know good. I rarely use it above 1Ghz... IIRC <2Ghz is band 0 didnt
By claude · #123201 ·
Re: 8516A cable question
Ordered a 6ft cable, will report back with my results. I have tried slow sweep, less points, zero span. No luck.
By Willy · #123200 ·
Re: Spectrum analyser in a high traffic strong signal environment
IIRC, Metamagnetics considers the 4 dB the insertion loss.? In an interference-limited receiver, that would probably be acceptable.JimSent from my T-Mobile 4G LTE Device
By Jim Ford · #123199 ·
Re: Spectrum analyser in a high traffic strong signal environment
Hi Jim: Interesting.? It seems that the weak (desired) signal is attenuated about 4dB while the strong signal is knocked down to the limiting level.? See:
By Brooke Clarke · #123198 ·
Re: 8516A cable question
Seems ike you could mitigate the problem by slowing the sweep down. Cheers! Bruce Quoting Lothar baier <Lothar@...>:
By Bruce · #123197 ·
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