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HP 3325B repair, help needed with Schottky diode
Hi, I got a HP 3325B, which seems to have seen very little use, no dust inside, and in great shape outside. Giving all different FAILs at the begining. First and easy fo find, two radial tantal 15uF
By Peter · #140634 ·
Re: Help figuring out my 8648C Signal Generator?....
Thanks for the info. :) I ended up buying an earlier manual to suit my serial number (Which doesn't seem to be available online), so one it arrives I'll scan it in and upload it here and there. Maybe
By Jared Cabot · #140633 ·
IF injector card HP 5062-6241
Hello Group, I am searching? this special card to calibrate the IF Section of my HP8593E. Does a GERBER copy of this PCB exist for this card ?, or a photo ? I do Have a copy of one card produced by
By Guy DAIPRA · #140632 ·
Re: HP 8116 doesnt reach 50MHz properly
If I remember correctly, that's about par for the course on these. It's been awhile since I've played with one. I would recommend you let it warm up for about an hour, and then run through the
By Swiss · #140631 ·
HP 8116 doesnt reach 50MHz properly
Hello, i bought an HP8116 in a good condition, working properly except that it can reach about 10MHz and after that the output is attenuated and distorted, in all waweforms. I didnt make the
By Augusto · #140630 ·
Re: Agilent E4406A CPU Board Pulling down the power supply.
On my E4406A I changed all the 100k 1206 SMD resistors on the fan controller board (as one of them had gone open circuit) and this cured an issue with the cooling fan running at full duty all the
By jmr · #140629 ·
Re: HP 8640B Attenuator Repair
I believe that Harley Halvorsen devised those hacks while working on the HP355 family of attenuators. He took Art Fong's design and added the compensation that pushed performance to 1GHz (pretty
By Tom Lee · #140627 ·
Re: HP 8640B Attenuator Repair
*And DO NOT touch or move any of the custom tuning materials such as those white wire "pigtails" or the thin metal strips bent around resistors. Don't move anything, and don't let any bumps occur to
By Don Brown, N3DEB · #140626 ·
Re: HP 8640B Attenuator Repair
Two pics, one of attenuator DC injection points in red and other vernier contacts epoxied.
By Don Brown, N3DEB · #140625 ·
Re: HP 8640B Attenuator Repair
You might research on the web, plenty of discussions. It is not a new concept. Here is one for example: https://maker.pro/forums/threads/microswitch-wetting-current.18605/
By Don Brown, N3DEB · #140624 ·
Re: Agilent E4406A CPU Board Pulling down the power supply.
Does it have any MLCC ceramic caps? Those are also prone to cracking and going short. A $300 thermal camera is really handy to find stuff like this - could be a cap, could be a shorted fet in a
By Andrew Hakman · #140623 ·
Agilent E4406A CPU Board Pulling down the power supply.
Hello, I have got an Agilent E4406A VSA that the PSU is hiccupping due to a supply rail overload. I pulled all the daughter boards and I get down to the CPU board + the front panel and that still
By Simon WW · #140622 ·
89441A firmware M.09.06
Hi, A friend of mine has an 89441A with firmware M.09.06...does anyone have this firmware, because on the Keysight website, the latest downloadable version would be A.09.05.
By Yves Tardif · #140621 ·
Re: HP 8920B
Ok I had to go look at the correct unit this time ? My 8920B options: 001, 004, 010, 013, 051 & 102 Being new to the HP line what is option 55?
By KB2LMN · #140620 ·
Re: 11807E Radio Test Software on PCMCIA Cards for the 8920B
Thanks Robert I just sent payment. What burner do you use I¡¯ve been thinking of getting one but I use windows 11 and i don¡¯t see many that will work? Drew
By KB2LMN · #140619 ·
Re: 11807E Radio Test Software on PCMCIA Cards for the 8920B
I've not seen a copy of the AM test suite. If anyone has a copy I can burn it to a card. Robert.
By Robert G8RPI · #140618 ·
Re: HP8753ES and speed
Thanks for the info Dave! ?We were a computer/TE service company and you wouldn¡¯t (well maybe you would) believe) how hard it was to push proper measures. The IT guru and I were the only computers
By Stephen Hanselman · #140617 ·
Re: HP8753ES and speed
If you decide you need something new and fast, the best bang for your buck is probably copper mountain.? Their TR1300 2-port to 1.3 GHz runs $4K.? Lighthing fast, good interface, and great dynamic
By Scott Vance · #140616 ·
Re: HP 8920B
Oh boy your correct I copied my 2600 info one the wrong page! Oh man I¡¯m sitting home with a 101 fever so I blame the meds!
By KB2LMN · #140615 ·
Re: HP 8920B
those options listed are for a Motorola /GD R26XX Regardless the latest firmware on the 8920B is 6.01
By John Yelmgren · #140614 ·