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Re: HP-1421A Q109 Voltages
-8.8V seems much more plausible, with the emitter -9.4V Hugh Gilbert
By Hugh Gilbert · #143067 ·
HP342A Noise Figure Meter Operating and Service Manual
If you have the meter and desire the original detailed service manual complete with fold out schematics error correction graphs, theory of operation... Please PM direct. Serials prefixed 416--- xxx hp
By alan victor · #143066 ·
Re: HP-1421A Q109 Voltages
Chuck, Thank you so much for that. I couldn't tell if that was a + or a - in front of the base voltage but that shows it clearly as +. Thanks again, Barry - N4BUQ
By n4buq · #143065 ·
Re: 85719A Noise Figure Measurements Personality for HP8595A
Yes, there is a process to have "downloadable programs" sent to the 8595E.? I do need to get the program though!
By vk2bea · #143064 ·
Re: HP-1421A Q109 Voltages
Here's a clean scan of the section you are looking at. ChuckA -- See Early TV at: www.myvintagetv.com
By ChuckA · #143063 ·
HP-1421A Q109 Voltages
Does anyone have a readable schematic for the A101 board in a 1421A? I have a paper manual on order but until that arrives, I would appreciate finding out the voltages shown for Q109 (Page 5-16,
By n4buq · #143062 ·
Re: HP 427A no DC offset adj. pot
Is it possible that the unit is late enough that its using a 0 offset opamp and wouldn't need that pot? I did look at the online schematic and do see what your talking about. But maybe they were not
By paulswed · #143061 ·
Re: 85719A Noise Figure Measurements Personality for HP8595A
Hi The HP 8595A have a card reader at front,and need hardware option 119 when used with NF personality DLP. Hardy Fra: [email protected] <[email protected]>
By hardyhansendk · #143060 ·
Re: 85719A Noise Figure Measurements Personality for HP8595A
Hi You are correct-this analyzer must have hardware option 119(noise fgure) for use with 85719A.Its not difficult to transfer this program via gpib. Regarding the expensive ram cards used for this
By hardyhansendk · #143059 ·
Re: Looking for a copy of the 4263B Adjustment Program, part number 04263-65005
Thank for the info. I have sent off an email to Carleton University but also still searching. :) Jared
By Jared Cabot · #143058 ·
Re: 85719A Noise Figure Measurements Personality for HP8595A
Sorry .. finger trouble ..? I meant to write 95E.
By vk2bea · #143057 ·
Re: Looking for replacement ECL logic chips etc, for HP 8160A Pulse generator.
After having a bit of a search online etc, I have found that Keysight list the 1820-2149 as being replaced by 5088-7082 (both are obsolete), so that opens up the search parameters a bit maybe. Jared
By Jared Cabot · #143056 ·
Re: A document about the 8165A
As always, an absolutely beautiful document, for the mind and the eyes. Thanks!
By Bert · #143055 ·
Re: 85719A Noise Figure Measurements Personality for HP8595A
I'm pretty certain the analyser will use the Y factor method (not the gain method) so an external noise source (HP 346B?) and an external preamp is needed (HP 87405A would be good here as it can be
By jmr · #143054 ·
Re: HP 427A no DC offset adj. pot
EDIT: The latest manual I've found is 00427-90005. ?I saw?00427-90008 referenced in a comment on a web page but haven't found it anywhere. Leon...
By Leon · #143053 ·
HP 427A no DC offset adj. pot
Hello, I recently acquired a Govt. Surplus (Air Force) HP 427A, SN/ 947-A19375. ?I was going to adjust the DC offset according to section 5-30 of the manual but the A2 board doesn't have the A2R7 pot
By Leon · #143052 ·
HP plotter film hp7470 and color pro plotters
Have a new box unopened, 50 sheets 81/2 x 11 plotter film. Contact me via PM if interested.
By alan victor · #143051 ·
Re: 85719A Noise Figure Measurements Personality for HP8595A
Michael, You need the personality module reader that attaches to the rear of the 95A. The card is read by the reader and uses the noise marker mode and the noise measurement method is the GAIN method
By alan victor · #143050 ·
85719A Noise Figure Measurements Personality for HP8595A
I have the option hardware in my HP8595A for noise figure measurements but not the HP 85719A Noise Figure Measurements Personality card. Presumably this is just software. Does anyone have this
By vk2bea · #143049 ·
Looking for replacement ECL logic chips etc, for HP 8160A Pulse generator.
I've just dragged out my 8160A pulse generator to finally get it working, and I am in need of a few ECL logic chips and a custom HP chip too. The troubleshooting I've done so far has me down to 3
By Jared Cabot · #143048 ·