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Date
Re: PNA (E835XA) Hard drive issue
Where are you located. Pete wa2odo
By Pete Manfre <pmanfre@...> · #103797 ·
PNA (E835XA) Hard drive issue
Hello all, I recently had a lucky auction where I scored a used PNA for really cheap. It arrived last week! Sadly, there were some issue with it, the first is the broken LCD, I tough it was the
By Julien Monette · #103796 ·
HP 3456A - Missing Diodes on A3 Board
As I'm working on my 3456A, I happened to notice that on the A3 board, there are four, rather significant, components that are missing - CR5 through CR8. These are located next to A3-C6 and shown on
By n4buq · #103795 ·
Re: HP 8644 Phase Noise Problem and Repair
Well John regarding 1/f noise measurement,? my spec-an is only usable down to 5 kHz.? Below 5 kHz I have to use my 3000T? scope.? The marginal noise floor of the FFT mode and the lack of a log
By Ted S · #103794 ·
Re: HP 8644 Phase Noise Problem and Repair
Impressive detective work there, Ted -- thanks for uploading the schematic. Heck of a first post. I know Dave at Artek was looking for a CLIP a while back and never got any replies, so your
By John Miles · #103793 ·
Re: HP4328A-4338A-B HP16143A or B Mating cable socket pins
I should've worded that better; the part number I mentioned in the above paragraph is for the *mating* connector for the 4328A's front panel connector, not the front panel connector itself. -Dave --
By Dave McGuire · #103792 ·
Re: HP4328A-4338A-B HP16143A or B Mating cable socket pins
If you mean the gray 2-pin connectors like the ones on the ends of the 16006A probes and the matching 4-pin sockets, I think those are/were HP-built jobs. I looked for them years ago and never found
By Steve - Home · #103791 ·
Re: HP4328A-4338A-B HP16143A or B Mating cable socket pins
Dave , thank you very much, looking to possible make several of similar probe as HP to fit the original 16143A & B mating cable, have several , believe that the connector can be duplicate if we find
By abalogh@... · #103790 ·
Re: Free (for shipping cost) -- Several HP paper manuals
Yes, in fact, tape engineers (I used to be one) don¡¯t use the word ¡°tape¡± but instead use the word ¡°media¡± and IIRC tape drive data sheets also use the word ¡°media¡±. DaveD
By Dave Daniel · #103789 ·
Wanted to Buy or Borrow E6432A VXI Synthesiser
Does anyone here happen to have an Agilent VXI bus Synthesiser Type E6432A they would like to part with for a reasonable sum, or indeed loan for a period of two months? Please contact me off list.
By Pete_G4GJL · #103788 ·
Re: HP 8644 Phase Noise Problem and Repair
There is a lot to comment on but I am short on time, so just one comment for now:? The 316 ohm SMT resistors in the phase detector look non-standard.? The successfully repaired board was
By Ted S · #103787 ·
Re: Free (for shipping cost) -- Several HP paper manuals
All Magazines and catalogs don't qualify because they have advertising in them. Media mail is subject to be opened and inspected. Do not include any "correspondence" . Included correspondence
By Dave / NR1DX · #103786 ·
Re: Free (for shipping cost) -- Several HP paper manuals
Watch out, and remember that the US Postal Service is staffed almost entirely by morons. Awhile back the museum received a magnetic tape...a large one, 3" width tape, on a 14" diameter cast aluminum
By Dave McGuire · #103785 ·
Re: HP 8644 Phase Noise Problem and Repair
Likely not. If memory serves, the 8644 was made up until about ten years ago. I don't know offhand when it was introduced, but I'm pretty sure it was nowhere near 35 years ago. This is a fairly new
By Dave McGuire · #103784 ·
Re: Free (for shipping cost) -- Several HP paper manuals
¡°Media mail¡± (book rates) still exists at USPS. Books, tapes, CDs, etc., all qualify. Magazines DO NOT qualify, they have their own rate. Paper bound manuals that were/are commonly produced by
By Jeremy Nichols · #103783 ·
Re: HP3336b
Checked all the diodes. They checked OK on the power supply board. I replaced C5. I have let it run for 2 days now and it seems to be working. I cycle it on and off during that time and all is good. I
By Tim <nardo53@...> · #103782 ·
Re: Free (for shipping cost) -- Several HP paper manuals
If you don't know about it already, you might investigate media rate from the P.O.? If it still exists, it's significantly cheaper.? You are supposed to be shipping manuals, magazines, books, etc.?
By Harvey White · #103781 ·
Re: Testing dummy loads with a VNA
Thanks, Robert, I'll take a careful look at that.
By Jinxie · #103780 ·
Re: Testing dummy loads with a VNA
Thanks, Stephen. I don't seem to be able to find the user guide for this instrument. I do have the full original service manual, though, which is invaluable in getting the device fully functional
By Jinxie · #103779 ·
Re: Testing dummy loads with a VNA
Thanks, Dave. Very instructive and useful response!
By Jinxie · #103778 ·