Greetings everyone. Morris has kindly donated to me an HP5100B synthesizer. Unfortunately the matching HP5110B Driver was not part of the package (the original...
Hi Morris: I've looked further into the radio module and I think the only parts needed are a transistor and some support circuitry. The transistor is biased...
Hi There, I need an HP8640B opt323 manual to fix my generator. I was told the manual is called an HP8640M for military. I've tried LOGSA and watched ebay for...
Hi, the opt.323 is not the same as the 8640M. I have both manuals, but i still don't have the manual for the Opt.323 Roger ... From: Ray Robinson To:...
Hi All, I have a thermal printer HP 5150A that requires a new character code PROM on the BCD (Binary Coded Decimal) circuit card. (The HP part number is ...
Hi, i remember programming that chip some 20 years ago. It is fairliy simple and because the item is so small, you can do it "by hand" if you can't find...
Hello, I am in need of the parts listing and the schematic of the Reverse Power Protection Module on the HP 8640B Sig gen. I have the Cal procedure but...
Hi all, Is here someone kind enough to help me with my HP8569B? I got it today and I am little confused with frequency span button. Although it is marked up to...
Hi Michal, i didn't knew the 8569, but be very careful with the knob, make sure that there is no slight defect in the switch which is probably repairable. if...
... <dj0ud@w...> wrote: Hi Jorgen, I repaired it today. The knob was broken from the inside and pieces of plastic limited its movement. I had a hard time with...
Hello Group, I have a pristene 54503A DSO with a problem in the Horizontal timebase. It fails with many codes mostly related to the trigger area. I could...
Hi Gang, Some more info has become available. It appears that it is not called the HP8640M. The correct name is the USM-323. Anyone have one of these? 73 Ray...
Hello all, I am after a working or otherwise HP4260A unit. I have one in good condition except for the large rotating resistor (R3). If you have one of these...
Hi All, I have a 652a (s.n. 826-01432) that has output level problems but only at a very specific range of frequencies. On the x10 range from ~40Hz to ~75Hz,...
Howdy all- I'm looking for a service manual or schematic diagram for the HP 233A audio oscillator. Any help greatly appreciated. Thanks! Regards, Vollumscope...
Hello Group: I started a collection of Tektronix gear but have developed an interest in HP's assortment of spectrum analyzers. The 141T seems to offer the...
Hello George, ... Well, I have a similar disease than you (check my WEB pages for proofs ;-)! ) In last years, I have got the following HP-141T gear: ...
Hello Jose, Thank you my friend for your response. I find your comments to be very helpful. People like you make the world a much better place to live. I would...
Hi - Go to Yahoo Groups and search for HP Service manuals. You will find one there. You might have to join the group, but it is painless. Regards Frank ... ...
Hi George - Although these analyzers are vintage they still remain very popular. The parts are readily avalable and usually quite cheap. We have several...
I have HP signal generator model 3320B with option 004 that works very well. However I don't know how to use the BCD programming connector at the rear. If...
Hi all, I've got a dead 1820-0090 IC from an 5216A counter and am looking for a common replacement if it exists. Its function is "buffer storage" and it sits...
Hello, Fedlog says it is a TTL 4 bit storage register. No JEDEC P/N cross reference given, but it is probably 74xx series. It is also the same as an 1820-0091...
... Hi all, I made an adaptor for a 7475 to 1820-0090 to fix the pinouts. The enable pin's logic is inverted so a 1 transistor inverter fixed that. It looks...
Clif, I have a pdf of the 8590 series service guide. It is a large file (15MB) and does contain the procedure for replacing the battery. I will try to email...
