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HP141T with multiple sections
Hello, I'm the owner of a HP141T with multiple sections since 2010. From that time, in order to be quick on different projects and testing, I progressively purchased three HP8552B? sections (IF
By tantratron · #148839 ·
Re: 8350A + 83525A mechanical issues
Thanks for the feedback Last night I tried the rocker fix. It almost worked, but when I went to put the final turns on the screws the plastic cracked thus I went to the next task, i.e. kicking myself
By bumbo.chinelo@... · #148838 ·
Re: Looking for Noise Source Driver Assembly E4401-60123 for E4407B Spectrum Analyzer
Thanks for the PDF, very interesting reading. Do you know what is the difference between the NFA and the ESA? I thought the NFA is just an ESA with the Option 219 card installed and the 2 ports routed
By Razvan Popescu · #148837 ·
Re: Looking for Noise Source Driver Assembly E4401-60123 for E4407B Spectrum Analyzer
Hi, there is a similar graph of uncertainties, but with VERY different axis scales, in 5989-8056EN dated May 12 2008. It also shows that the NF option for the ESA analyzers to be less than wonderful.
By Charles Edmonds · #148836 ·
Re: HP 8341B 1992 firmware version
Reasonably sure you will not have a problem - please do report the result. Cheers! Bruce
By Bruce · #148835 ·
Re: Looking for Noise Source Driver Assembly E4401-60123 for E4407B Spectrum Analyzer
The E444xA does have the 110 option for a 50 GHz preamp but the noise figure (and presumably also the input VSWR) of the preamp limits the performance across the upper parts of the frequency range.
By jmr · #148834 ·
Re: Looking for Noise Source Driver Assembly E4401-60123 for E4407B Spectrum Analyzer
In my opinion, the only HPAK spectrum/signal analyser that can be expected to work (very) well with the noise figure option and a 5dB ENR HP 346A noise source is the classic E444xA from about 20 years
By jmr · #148833 ·
Re: VNA Resonance Methodology
For comparison, here's my Q-measurement of a 6.2?H air coil? at?? 8.28MHz Measured with the HP4342A?? Q=221???? VNWA shunt-through measurement see graph.
By Guido ON7CH · #148832 ·
Re: HP 1725A no horizontal deflection
I checked all power rails again, no problem. The I worked backwards from the deflection plate drivers (A13), injected some signal, and got deflection. Worked back to Q23/S24 on A8, and get deflection.
By Peter · #148831 ·
HP 1725A no horizontal deflection
Hi all, I have a HP 1725A 'scope here, with no horizontal deflection. Vertikal deflection is working fine, I get a vertical line if I feed it with a sinus, or two dots when i feed it a square wave.
By Peter · #148830 ·
Re: Shielded probe cables?
It is the 5032, http://www.qdkingst.com/en/products , I was typing from memory and the manufacturer name probably stuck because it is the software I see the most. It has a nice dev kit and I have
By Anders · #148829 ·
Re: Looking for Noise Source Driver Assembly E4401-60123 for E4407B Spectrum Analyzer
Charles, Many thanks for this graph. It is very interesting as it also mentions the good old (and still very useful) HP8970B NFA. Googling the doc number in your message comes up with the doc:
By Harke Smits · #148828 ·
Re: Looking for Noise Source Driver Assembly E4401-60123 for E4407B Spectrum Analyzer
Hello Charles, Can you please share the 5989-8056EN document you have? I cannot find it. I would like to read it since I was also looking for the Option 219 card to add it to my ESA. 73, Razvan
By Razvan Popescu · #148827 ·
Re: HP 8341B 1992 firmware version
Hi Bruce, Thanks for the valuable additional information. I'm arranging 8510C with display units with LCD and the latest firmware 8.XX so I wanted to know if my 8341B will work. But I will try then
By wojciechoo@... · #148826 ·
Re: Looking for Noise Source Driver Assembly E4401-60123 for E4407B Spectrum Analyzer
Dear Charles, thanks for this valuable feedback. I was not aware of this at all, and yes I agree this makes the option almost useless. I was tempted because of the wide frequency range. Hhwever I now
By DL8EBL · #148825 ·
Re: Looking for Noise Source Driver Assembly E4401-60123 for E4407B Spectrum Analyzer
Hi Olaf, before you pursue this option further you might like to read some of the manufacturer's documentation on that option. An early version of 5989-8056EN included the below plot which includes
By Charles Edmonds · #148824 ·
3577 VNA Active Reflectometer Bridge...
Greetings. I have uploaded the Active Reflectometer Bridge design for the 3577 VNA previously mentioned. The files resides in the file area ...\helpful tools... If anyone wants other format of the
By Ulf Kylenfall · #148823 ·
Re: 8350A + 83525A mechanical issues
Regards the switch I would look at cutting the broken part off the rocker off put a slot into the plastic where the part of plastic was that had the hole make a metal replacement and hold the new
By Paul Bicknell · #148822 ·
Re: VNA Resonance Methodology
I'll just post some shots to answer the requests earlier up the thread. This first one is the set-up I'm using. I have had to resort to some longish leads to connect the items together, but this is
By Jinxie · #148821 ·
Looking for Noise Source Driver Assembly E4401-60123 for E4407B Spectrum Analyzer
Dear All, I like to extend my Analyzer with the noise measurement option. Does somebody want to sell a E4401-60123 Board + Cables ? If yes please drop me a reply or send a pm. thanks for reading and
By DL8EBL · #148820 ·