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Date
Re: 5086-7337 *Yig Oscillator issue*
Of course not My mistake, those voltage values are present during mainframe command sweeps, in this case, from 10 meg to 20 gig. YO supose to do four sweeps at different freq spans to cover all bands.
By RubenRubio · #133261 ·
Re: 5086-7337 *Yig Oscillator issue*
just for clarification are you saying one yig can sweep from 10 meg to 20 gig Sent: 12 March 2023 13:29 To: [email protected] Subject: Re: [HP-Agilent-Keysight-equipment]
By Paul Bicknell · #133260 ·
Re: 5086-7337 *Yig Oscillator issue*
Following the service manual: - Voltage across R1 is changing both in auto and manual sweeps, between 14 and 24 volts, from 10 meg to 20 gig, respectively. - Waveforms described in the figures are
By RubenRubio · #133259 ·
Re: Agilent E3610A Operator Faux Pas or Production Change
George, Adrian & Renee These are some interesting possibilities. Fifty five years ago when I was a curious adolescent and as Dad frequently elegantly stated, "A menace to society,) the supply would
By Chuck Moore <wd4hxg@...> · #133258 ·
Re: Agilent E3610A Operator Faux Pas or Production Change
Great idea! Cheers, George G Sent: Sunday, 12 March 2023 7:06 PM To: [email protected] Subject: Re: [HP-Agilent-Keysight-equipment] Agilent E3610A Operator Faux Pas or Production
By Labguy · #133257 ·
Re: Agilent E3610A Operator Faux Pas or Production Change
May not an option for HP gear which tends to be 'compactly' designed, but I have a whole bunch of 115VAC-only test gear from the likes of Eico which I've modified to run on the UK 240VAC supply by
By Adrian Nicol · #133256 ·
Re: 8566B attenuator fix
Mine has a LM78 regulator, but it's the same difference. I'm really lacking the analog/psu expertise here, so I'm wildly hypothesizing. If anyone knows better, please chime in, I'd like to know too. I
By bagojfalvibagoj@... · #133255 ·
Re: Agilent E3610A Operator Faux Pas or Production Change
Chuck you left off a few options 5. give it to someone to play with/modify 6. quit wasting time---landfill/recycle I am sure there are a few I missed, LOL Ren¨¦e
By Ren¨¦e · #133254 ·
Re: 5086-7337 *Yig Oscillator issue*
If that test fails (I or V not changing) check the drive V to Q1. If that is changing but the I does not (or the V across the R), suspect Q1. Mark ________________________________ Sent: Saturday,
By Mark Bielman · #133253 ·
Re: Agilent E3610A Operator Faux Pas or Production Change
The saga of the E3610A bench power supply continues. Long story short. HP/Agilent broke with tradition and decided to market a reduced cost power supply. Apparently part of the cost reduction was
By Chuck Moore <wd4hxg@...> · #133252 ·
Re: 5086-7337 *Yig Oscillator issue*
Ruben - Probably the easiest check is to see if the voltage across the resistor changes with frequency. Somewhere in the service manual, they should give you the ma/Hz number for this circuit. If that
By Bruce · #133251 ·
E8364-60204 CPU Board (PNA N5230A) Boot Loader SW question
I am attempting to fix a PNA CPU board that is bad.? Some years back it was sent to Keysight for repair and we got a quote of something like 18K, so it has just sat around the office for a couple
By Scott Vance · #133250 ·
Re: Looking for Agilent PNA old FW repo?
Have you checked with Keysight?? I recently requested FW for my unit and they provided me with A.07.50.67.? Not what you need, but I assume that they will help you out if you put in a ticket with
By Scott Vance · #133249 ·
Re: 5086-7337 *Yig Oscillator issue*
Reading the schematics, I bring you some ideas, correct me if i'm wrong: - I must measure the voltage drop across R1 (one of the power resistors in the plugin) and that will reveal the current sent to
By RubenRubio · #133248 ·
Re: 8566B attenuator fix
Thank you very much for answer. I guess your board is an extended version of mine : you have 4 solenoids instead of 3 for me (10+20+30db =60) but do you know what is the 3 legs chip near the 8L05
By jfphp · #133247 ·
Re: 8350B *restoration adventure?*
Ruben - WELL DONE - Amazing work and obviously a lot of work. The 83590 series have some of the highest current draw, so if it works satisfactorily with these it should be good for most if not all
By Bruce · #133246 ·
Re: 8350B *restoration adventure?*
*Great news! * My 8350B sweeper is now working! Closed with a standard power cord. You can see some of the montage steps in the pics attached to this post. Finally, I decided to swap the old burnt
By RubenRubio · #133245 ·
Re: 50 Ghz step attenuator driver board
It is very far from being official, but looking at your picture it looks very similar to the one I'm working on right now. /g/HP-Agilent-Keysight-equipment/message/133239
By bagojfalvibagoj@... · #133244 ·
Re: 8566B attenuator fix
WELL DONE ! It would have been nice to get better closeup of recovering the contacts after pulling them through, but overall excellent ! Did you note any deformation of the leaves due to pulling the
By Bruce · #133243 ·
50 Ghz step attenuator driver board
Hello, Does anybody have the schematic diagram --and eventually the parts layout --of the latest 24V driver board? fitted in the 60db 50 Ghz step attenuators (the older ones did have the traditional
By jfphp · #133242 ·