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Sorry, it was a typo, I should have typed 3440. The manual is operating and service with schematics. My e-mail is: joseph@... Thank you

Joe I am interested in the manual if it is a service manual with a schematic. You say it is the same as the 3449 (typo?) Is it the same as the 3439 except for the sampe rate? If so I am interested.

Jorgen, I have an original manual for the HP 3440A voltmeter, which is the same as the 3449 except for the sample rate, cost U$S 12.00 plus shipping. Let me know if interested. Thank you. Joe Orgnero

Ripple is about 1.5v on the 150v supplies and about .5v on the 50v supply. This site: https://www.logsa.army.mil/etms/find_etm.cfm has the calibration procedure for the 3439A which gave me some

<computeruser@s...> wrote: Did you check all supply voltages for ripple? Power Supplys has to be checked first, ever! Jorgen

I don't know if it will make you feel any better but I have a Fairchild Model 7000, 5 1/2 digit Nixie tube DMM and I use it all the time. Works perfect. I also have a Systron Donner 6152A, 500 mHz

Hello All I was just given an old HP 3439A Digital Voltmeter to play with. It has the 3443 High Gain/Auto Range plugin. The Nixie tubes light but display random digits. I have searched for a

Quite a few typos scattered throughout, but still a very interesting historical document on HP/Agilent gear through the ages. http://cp.literature.agilent.com/litweb/pdf/5980-2090E.pdf (36 pages,

you can find the service man. for the B version at BAMA site Elie

In order to repair my instrument I looking to downloadable HP 8552A service manual any Help Apreciated Gabriele

Hello all, I have the following "vintage" manuals for sale: HP 522B counter $ 5.00 HP 5253B frequency converter (for 5245L counter) $ 10.00 HP 5440A digital DC

hi Dave, What are the magic buttons to invoke the self test on the 8050A please? Cheers Ian Du Rieu

That completes the continuum for me, then!!!! Very cool. I have a Fluke 8050A, a benchtop 4.5 digit DMM with battery option. It's now 20 years old. I have never calibrated it. I take it to work

Thanks to all for comemnts and suggestions :) Cheers Ian Du Rieu

I have a few HP3456As and have been pleased with them. The have a 1000 volt range and I think they can measure higher voltages than the HP 3478. The HP3456A's red LED display is easier for me to

The 3478A is certainly a nice meter, but I have a hard time getting my bench lighting right so LCDs are readable without too much light falling on the scopes. Too bad it doesn't have a backlit

A friend in town (W7TOM) just bought an HP 3478A, and we were both very favorably impressed by it. I have a HP 34401A on my bench which I bought brand-new for $1K, and the 3478A is almost as good at

Hi all, I'm looking at getting an HP meter along the lines of the 3455, 3456 or 3457. Its to be used in a small lab. I don't require any remote capabilities. I'm after a meter to carry on from

Hello Gary, read the thread about the HP 8405A Probe repair, the sampling head of the 3406 is quite the same as the 8405's are. And they usually die the same way. 73's Jorgen dj0ud

<dentist@n...> wrote: Hello Arthur, 20 Volts is a bit high, do the measurement at 5 to 10 Volts. The reverse voltage rating of this fast switching shottkys is quite low. Jorgen