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Date
Re: Attenuators in HP/Agilent Infinium 548xx scopes
Jay, thanks very much for the information. I¡¯ll keep an eye out for proper ones. -Pete
By Peter Loron <peterl@...> · #71820 ·
Re: UPDATE on the HP-8568B SA's, Battery Time
Hi Vladan and thank you very, very much for that information. You told me exactly what I needed to know. I was afraid that I would lose important system data or information w/o the battery and would
By Gedas · #71819 ·
Re: UPDATE on the HP-8568B SA's, Battery Time
The battery is in the RF section (bottom box). In the "B" model, it's soldered into the processor board which is under a long, hinged sheet metal cover. I think it's the board with the green pull-out
By pianovt · #71818 ·
UPDATE on the HP-8568B SA's, Battery Time
Hello group. I have been able to purchase a 2nd HP-8568B SA unit, this one with the rear cables and with a HP-8444A (opt 059) tracking generator. I was so happy to see that by swapping cables from one
By Gedas · #71817 ·
Re: HP3325 transistor
Wally I think this is what you are looking for: > eBay item number: 361297807134 < I have purchased from them, made reasonable offers, always happy with results. Dennis
By czelusniakd · #71816 ·
HP3325 transistor
I broke and rebuilt a HP 3325A function generator. It appears that everything works up to the power amp. Power amp has had most transistors replaced and does give out an appropriate signal as far as
By Wallace Gasiewicz · #71815 ·
Re: Attenuators in HP/Agilent Infinium 548xx scopes
Hi Pete, The 54810A, 815A, 820A, and 825A use the same attenuators. They are also the same as the older 5452XA and 5454XA scopes. All of the above scopes also share the same A/D converters. The 54835A
By Jay Walling · #71814 ·
Re: HP 8559 / 853A How to peak hold and normalize display??
Thank you Vladan, I got that manual and it helped a lot. I'll give it a try tomorrow. Regards, Lenny Wintfeld (ham radio call: W2BVH)
By w2bvh · #71813 ·
Re: HP 8559 / 853A How to peak hold and normalize display??
How "high" is the level? Depending on the bandwidth and power level, you may want to avoid this method on some devices. Passive devices and amplifiers through VHF should be no problem. In the
By Ed Breya · #71812 ·
Re: HP 8559 / 853A How to peak hold and normalize display??
Lenny, The 853 storage, if I remember correctly, was based on the HP 8750A Storage Normalizer. The buttons have different names, but the concept is similar. You may find some useful instructions in
By pianovt · #71811 ·
Re: HP 8559 / 853A How to peak hold and normalize display??
I suspect the 853A cannot subtract two STORED Traces. I think one of them will have to be Live. If your using Noise as your Signal, then you will need to use Noise Averaging, which the 853A will do.
By Bill Lauchlan <bill.lauchlan@...> · #71810 ·
Re: 83623B Synthesized Sweeper: notch at around 90MHz and unleveled directly above this notch
Hello Joe, I wanted to get back to you regarding your offering to help here. Do you have an idea how the nominal frequency of the 5.4GHz VCO is adjusted, so that the loop will lock again in the right
By Thomas Butterstein · #71809 ·
Re: HP 8559 / 853A How to peak hold and normalize display??
It is a fairly routine measurement to make, but it's usually done with a network analyzer. It needn't be done with a VNA if you just want frequency response (a scalar quantity...amplitude, no phase),
By Dave McGuire · #71808 ·
Re: Hp 141T
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By arie schellaars <arie.schellaars@...> · #71807 ·
HP 8559 / 853A How to peak hold and normalize display??
I would like to use a high level noise source (one of those $15 Chinese boards) with a HP8559/853 to do filter and amplifier passband / stopband measurements. I know that in general I have store the
By w2bvh · #71806 ·
Attenuators in HP/Agilent Infinium 548xx scopes
Hello. Does anybody know if the attenuator modules are shared across the various 548xx scope models? I have a 54845 which I think has at least one bad unit. Can I salvage attenuators from, for
By Peter Loron <peterl@...> · #71805 ·
Re: Hp 141T
No I havent checked anything yet..Please send a email to me and I can send pictures Maybe that will help better.. Skip.. Wb4yvo@...
By Skip · #71804 ·
HP for sale
Group I am asking for a bit of help or advice on a task I have taken on. Fred, my former customer and associate, passed away several years ago and his widow has asked me to help sell his test
By Paul Kraemer <elespe@...> · #71803 ·
Re: Hp 141T
Have you checked the power supplies for excessive ripple?
By Merchison Burke · #71802 ·
Hp 141T
I have a HP-141T that was working correctly but now has a problem with the scan? instead of a smooth trace its in humps. Hard to explain. I can take pictures of trace.. Anyone with any ideas can
By Skip · #71801 ·