... No no no Don, probably your users had less power to hand or were more careful! I didn't mention the mortality rate of input attenuators - surprisingly (to...
If most of the failures you observed were due to radar signals, I am not surprised the attenuators did OK. The radar pulses have a low duty cycle, and it takes...
Hi Didier and all the List, <snip> ... ... and this is also the reason to keep three mainframes, some accessories and lots of plug-ins in a working place at my...
My final comment on the subject (for now :-): These older instruments are irreplaceable, and more than just because they don't make them anymore. 20 years from...
Marc, I installed 05328-60046 in my 5328A a couple of weeks ago. It is indeed a 512MHz Channel C board and works just fine. TP+ and TP- connect to an LED that...
... Hello Jose, Didier and all, I agree completely. One could write books on repair techniques, and on things discovered repairing test equipment. About the...
... <hp_agilent_equipment@yahoogroups.com> ... ammeter ... downloaded ... #### I happen to have three of these 428B's. Two were working until yesterday. I...
Greetings, Does anyone know what hppn 1820-2056 is? A datasheet would be great. The part is a 16 pin dip with a TI bug from a pwb with both ecl and lsttl ic's....
I am very happy with my "new" HP 8657B which so considerably cleaner than the 8656A it replaces. However, in the quest for low phase noise/spurs, I compared it...
... Yep, I do agree, the only things that are missing on the 141T ++ are the lack of digital storage and a preselector. At home I have a Tek 492 and an HP...
... Didier, the problem will be that in 20 or certainly 30 years time, I, at least, will be too old to worry about repairing such gear, and the up and coming...
... Get yourself a 3336 with the high quality attenuator option, and slave it to the 3586. It only goes up to 20MHz, but it is much cleaner than the 3586, and...
... The cross-reference file hp_xref-free.pdf available at http://www.sphere.bc.ca/test/hpparts.html#cross lists it as an SN74LS378N. You can download a...
Thanks, I had that info but was assuming sn74ls378 would be a 20 pin device. A closer look at the datasheet revealed my assumption was wrong. jerry Jack Rouse...
Hi John, Yes, you may use the MSS30.046-c15 from metelics. It has 5 juctions available. There are a few others, most are obsolete, but if you have them you may...
Yes, I have looked at the 3336 but they go for more money than I am willing to invest for a generator that stops at 20 MHz, unless I find a dead one :-) Didier...
Hopefully, I won't be too old to worry about it, whether my sight and coordination will get in the way is another story, if I am still around to even care :-) ...
I agree that they can be pricey. But I had an application when working with bit stuff/destuff circuits in the telecom world. Their ability to adjust...
Those look like garden-variety line sidebands or fan vibration. Maybe you could try a narrower span to spread them out a bit more, so you can use the 494P's...
... Actually, all of the preselected 49x analyzers have a diode limiter in the signal path prior to the mixer. It occupies the same place in the block diagram...
We had to implement a system of parking aerials under test facing in a specific direction - we already had a system to prevent two radar systems being on at...
I have been using the 3586 as a scalar NA using the TG output with some home grown software, and it works quite well. As it is, the 3586 has 0.1 Hz resolution,...
Well, times change. A long time ago, while involved in the development of a 1.4 MW CW klystron for Thomson (for the CERN's hadron collider). They had to build...
Hmmm?, I'm not sure. When the 3336, and the 3586 are paired together, the pairing is done by flipping one of the extra switches on the HPIB interface on each...
One of the nice features of the 3336 is that it actually goes from 0 to 21MHz, on the front panel, and from 21 to 60MHz on the back panel. But the shame is...
The 3586 also has a 50-82 MHz output on the rear, that is apparently an option. My unit has the hole and silk-screen but not the connector. Is the 21-60 output...
... counter. ... Jos, I bought mine on ebay for about 2,99 USD ! But there are more available at 10 bucks : you can check item #140015085867 If you happen to...
... from page 3-3 of the 3325B manual: nonvolatile memory memory added ( backup battery for instrument state) modulation source added: 2nd source of sine,...
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